No, OpenSEO isn’t going to kill Semrush, and if you listen to what its founder actually says, it isn’t really trying to.
OpenSEO is a $10-a-month, open source SEO tool that runs on DataForSEO’s API, and it’s very upfront about that.
And honestly, my first impression was that OpenSEO is just a DataForSEO wrapper with a nice funding headline attached and nothing more to it.
But after going through its docs, its code on GitHub, its pricing and a lot of what the founder has said in public, that turned out to be…about half right.
The data is DataForSEO’s, all of it apart from your own Search Console and Analytics numbers, of course (that you are not obligated to connect).
But the product built around that data is where the real work goes, and I think for certain people, OpenSEO is a pretty decent value.
And of course, the advantage it has over Semrush and Ahrefs is the price and an ability to self-host the entire thing and only pay for DataForSEO API when you have actual needs for it.
That also does a lot of work in telling you who this product is really for, but let’s discuss that later on.
The short version
- OpenSEO costs $10 a month, and that $10 includes $10 of usage. Past that you pay per lookup, at DataForSEO’s price plus a 28% fee. You can also self-host it for free and pay DataForSEO directly.
- All the keyword, SERP, backlink, rank tracking and AI visibility data comes from DataForSEO, and OpenSEO says so on its own site. However, the site audit crawler, the MCP server, the agent skills and the project memory are its own work.
- The funding they received is the standard Y Combinator check of $500,000, for a company of two people. The real fundraising, if it happens, is still ahead of them.
- Against Ahrefs and Semrush it wins on price and on not charging per seat. It loses on backlink data, historical data, traffic estimates, reporting and maturity, and definitely not by a small margin.
- SEO Utils is its closest rival, really. It runs on the same data, costs $69 once instead of $10 a month, and right now it has more of the features agencies and freelancers actually use.
- OpenSEO is a good fit for business owners, solo founders, bloggers and freelancers on a budget who want directional data and like working through Claude. It’s not an agency tool, at least not yet.
- Most people should just use the hosted version. Self-hosting saves real money only if you already run a server with room to spare or your data bill gets past roughly $90 a month, and on xCloud, which I use personally, it’s a one-click install.
What OpenSEO is and who’s behind it
OpenSEO is an SEO platform that covers keyword research, backlinks, rank tracking, site audits, competitor research and AI visibility tracking, all in one app with one plan.
What makes it different from the usual suspects is that it was built with AI agents in mind from the start. You connect it to Claude, Codex, Cursor or ChatGPT through MCP, and your agent can pull keyword data, check live Google results, look at a competitor’s backlinks, read your Search Console data and save what it finds back into your project, where you can see it in the app.
The code is open source under the MIT license, which means anyone can read it, change it, fork it or run it on their own server without paying OpenSEO anything.
The company behind it is Every App, Inc., and the person behind that is Ben Senescu.
Ben is a software engineer, not an SEO, though.
He studied computer science at Northeastern University in Boston, spent three years at Klaviyo, where he became a senior engineer on the application security team, and then spent a year at Patrol, a startup building an AI agent that finds and fixes accessibility problems on Shopify stores.
On the Unscripted SEO podcast in August he described himself as fairly new to SEO and explained how he got here.
He wanted to do SEO for his own open source projects, found every tool bloated and too expensive for a solo builder, and then noticed that a lot of people were vibe coding their own SEO dashboards on top of DataForSEO’s API.
So in February he asked r/TechSEO whether an open source starting point would be useful and shared the first version about a week later.
Things moved quickly from there. The GitHub repository now sits at around 23,600 stars, 3,100 forks and 780 commits, OpenSEO launched on Product Hunt on July 19 and finished as #1 Product of the Day, and it got into Y Combinator’s Fall 2026 batch.
YC lists the company as founded in 2026, based in Boston, with a team of two, and the OpenSEO homepage claims more than 3,000 users.
However, in my opinion, what Ben is trying to build is narrower than the “Semrush killer” framing.
On the podcast he said most of the people paying for hosted OpenSEO aren’t professional SEOs comparing it against Semrush.
They’re people who never used Semrush at all, because at $100+ a month it was never on the table for them.
He wants OpenSEO to be the first SEO tool those people pick up.
He was also clear that OpenSEO won’t chase deep, original SEO insights that you can’t get anywhere else, and that it’ll leave that to other tools.
The goal is for OpenSEO to be the place where your rankings, prompts, research and project context live, or as he put it, “the brain for your Claude.”
The roadmap follows the same logic. Ben said he’s going wide before going deep, so local SEO, AI visibility and prompt tracking get added before any one feature gets polished to Semrush level.
That YC badge in the footer is also where the “they just raised a lot of money” story comes from, and the money involved is the same deal every YC company gets.
The funding is smaller than the headlines make it sound
OpenSEO got the standard YC deal, and nothing more than that so far.
When Ben announced the YC Fall 2026 batch, the reported terms were $500,000 in total, made of $125,000 for 7% of the company plus $375,000 on an uncapped SAFE with a most favored nation clause. Dealroom only lists the $125,000 part as early funding.
That’s every YC company’s deal.
Getting into YC is a real achievement, but it doesn’t mean investors were fighting over OpenSEO. The bigger money, if it comes, usually follows Demo Day at the end of the batch, when the companies pitch to investors for a proper seed round.
So right now you’re looking at a two-person company with half a million dollars, 7% of it sold to YC, and very likely a seed round on the way.
The worry about what funding does to a product is fair, though.
VC money isn’t charity. Investors back a lot of companies knowing most will fail, so the few that work have to grow big enough to pay for all the rest.
A $10-a-month tool where most customers never spend past the $10 doesn’t produce venture-sized revenue on its own. To get there, OpenSEO needs either a huge number of users or more money from each one. More money per user means some mix of a higher base price, a bigger fee on top of the data, per-seat pricing, features moved into a higher tier, or an agency plan.
That’s the classic pattern where you get people in cheap, then you raise prices once they’re used to the tool and their data lives in it.
Semrush is the obvious example of how that plays out over the long run. It took venture money, went public in 2021, and its Pro plan went from $99.95 to $139.95 in steps, $119.95 in 2021, $129.95 for new customers in 2023 and $139.95 in 2024.
To be fair to Semrush, that’s around 40% over a decade, which isn’t a horror story, really.
But it shows the direction. And Semrush isn’t a public company anymore either. Adobe completed its acquisition on April 28, 2026, in a deal worth about $1.9 billion, and Adobe now describes Semrush as a brand visibility platform.
That’s a long way from the SEO tool a lot of us started on.
Ahrefs went the other way. It never took venture money, and its founder Dmitry Gerasimenko told Vulcan Post back in 2021 that he’d had emails from “almost every active venture capital fund in the world” and turned them down.
Ahrefs has raised prices too (Lite is $129 a month now), but it answers to its own customers rather than to a board that needs a 10x return.
That’s part of why Ahrefs could spend years and a lot of money building its own crawler, its own index and even its own search engine.
There are a couple of real counterweights in OpenSEO’s case too, and the biggest one is the license.
Code released under MIT stays MIT forever. If OpenSEO gets bought, raises its prices or changes direction, the version you’re running today can still be forked and self-hosted by anyone, and 3,100 people have already forked it.
OpenSEO leans on this in its own marketing, and its Semrush comparison page says plainly that if the hosted version stopped being worth $10 a month, you could run the same software yourself.
The caveat to that is that future versions are a different story. VC-backed open source companies have changed licenses before.
HashiCorp moved Terraform to a more restrictive license in 2023, and Redis did something similar in 2024.
If that ever happened here, the old MIT code would still be free, but you’d be stuck on an older fork unless the community kept it alive.
There’s also a pricing risk that has nothing to do with investors. OpenSEO’s fee sits on top of DataForSEO’s price, so when DataForSEO raises prices, OpenSEO users pay more automatically.
That’s not hypothetical either. On July 1, 2026, DataForSEO raised prices by about 20% across its Backlinks, Labs, Keywords Data, On-Page and Domain Analytics APIs, among others. The same thing applies to SEO Utils and every other tool that runs on DataForSEO.
I don’t know which way OpenSEO will go, and I’m not sure anyone does at this point. What I’d keep an eye on is the 28% fee, the $10 base plan and the “not planned” list on the roadmap. If those start moving, that’s your signal. Until then, you’re paying month to month with no annual lock-in, and you can leave whenever you want, so the risk of trying it is close to zero.
Is OpenSEO just a DataForSEO wrapper?
For the data, yes, and OpenSEO says so itself.
Its OpenSEO vs DataForSEO page explains that every search volume and backlink count you see in the app came from DataForSEO, and then adds, “We don’t have a secret better index, and we don’t want one.” The same page lists keyword, search results, rankings, backlinks, local and AI visibility data as coming from DataForSEO, while your Search Console and Google Analytics data comes from Google.
On the cloud version, OpenSEO adds a 28% fee to DataForSEO’s price, so a keyword lookup that costs $0.10 at DataForSEO costs about $0.13 in OpenSEO.
The DataForSEO links on OpenSEO’s site and docs also carry an affiliate code, so it earns a bit from every DataForSEO signup it sends over. That’s normal and I don’t hold it against them, but it’s worth knowing when the docs tell you how great DataForSEO is.
If you haven’t come across DataForSEO before, it’s a company that sells raw SEO data through an API.
SERPs, keyword metrics, backlinks, on-page crawls, AI answers, all priced per request, and aimed at developers who build their own tools. Its backlinks database holds roughly 2 trillion live backlinks, with history going back to the start of 2019, and its keyword data comes from its own Labs database and Google Ads data.
A lot of the affordable SEO tools you’ve heard of run on it.
So the data side is a wrapper. The interesting question is what OpenSEO built around that data, and that list is longer than I expected.
- The site audit is OpenSEO’s own crawler. It runs as a separate worker on Cloudflare, with a scratchpad database for every audit, which you can see in the audit worker config on GitHub. Standard audits don’t use credits at all.
- Rank tracking runs on DataForSEO’s task queue instead of its live API. OpenSEO says that costs about a third as much, and most people building their own setup never bother, because posting tasks and polling for results is annoying to build.
- The MCP layer trims what your agent gets back. The keyword tool drops the 12-month trend data, which OpenSEO says is about 80% of every keyword row, and search results come back as just rank, domain, title, URL and description. Less junk in the response means your agent gets through more research before its context fills up.
- Every tool tells the agent roughly what it’ll cost before it runs, one bad keyword doesn’t fail a whole batch, and asking for the same Google results in the same project within 12 hours is free.
- Project context and a research log are saved per project, so your agent reads your business, competitors, key pages and writing preferences at the start of every session, and checks what’s already been researched before buying the same data again.
- Then there are the agent skills (keyword research, competitor analysis, site audits, local SEO, link prospecting and an SEO coach for beginners), saved reports you can share, and Search Console and Google Analytics connected by signing in with Google, without creating a Google Cloud project.
None of that is magic, and a decent developer could build most of it.
That’s sort of the point, though. OpenSEO’s whole pitch is that thousands of people were building the same DataForSEO dashboard over and over, so it built one properly and open sourced it.
Should you use a wrapper at all, then?
Your data quality has a ceiling, and that ceiling is DataForSEO.
For keyword research that matters slightly less. I’ve said for a long time that search volumes and difficulty scores in every SEO tool are estimates, that different tools disagree with each other constantly, and that your own Search Console is the only real data you have about your own site.
I went into how much tools can be off in my Mangools review, and the short version is that you should treat every volume as directional. DataForSEO’s directional data is fine for that, for a lot of users.
Where the ceiling actually hurts is backlinks, historical data and traffic estimates for smaller sites.
That’s where Ahrefs and Semrush have spent years and a lot of money building their own data, and no wrapper, OpenSEO or SEO Utils or anything else, can get around that.
OpenSEO vs Ahrefs vs Semrush vs SEO Utils, job by job
Ahrefs and Semrush are the two tools everyone measures against, and SEO Utils is the closest like-for-like comparison, because it runs on exactly the same DataForSEO data.
Here’s how the four line up across the jobs most of us actually do.
| Ahrefs | Semrush | OpenSEO | SEO Utils | |
| Where the data comes from | Own crawler and databases | Own crawler and databases | DataForSEO, plus your GSC and GA4 | DataForSEO through your own key, plus your GSC and GA4 |
| Entry price | $129/mo (Lite) | $139/mo (SEO), $199/mo (Starter) | $10/mo with $10 usage, or free self-hosted | $69 one-time, plus DataForSEO usage |
| Extra users | $40 to $100/mo each | $45 to $100/mo each | No seat fees | Remote Access $5.99/mo, extra seats $1.99/mo |
| Keyword research | 29B keywords, 217 locations | Around 28.8B keywords | DataForSEO, 143 countries, about 5¢ a search | DataForSEO at cost, plus autocomplete and PAA scraping |
| Backlinks | Largest live index, 35T links of history, updated every 15 to 30 minutes | Claims 43T backlinks | DataForSEO, about 2T live links, history from 2019 | Same DataForSEO index |
| Site audit | Yes, 100K crawl credits on Lite | Yes | Own crawler, up to 10K pages per audit, JS rendering added in October | No full technical crawler, has log file analysis |
| Rank tracking | 750 keywords, weekly | 500 keywords, daily | Daily, weekly or monthly, pay per check | Unlimited keywords, Google, Bing and Maps grids |
| AI visibility | Brand Radar, 5 tracked prompts on Lite, AI add-on from $199/mo | AI Visibility Toolkit, $99/mo on its own or included from Starter | ChatGPT, Gemini, AI Overviews, Claude and Perplexity, pay per check | ChatGPT, AI Overviews and AI Mode |
| MCP | Included from Lite | From Starter ($199/mo), with 50K API units | The core of the product, can save work | $59.99 one-time, runs locally |
| Client reporting | Report Builder (5 reports on Lite, $99/mo add-on for more) | Mature, plus Agency Growth Kit | Basic, public report links but no white-label or scheduled reports yet | White-label reports, client dashboards, automations |
Keyword research
All four will tell you whether a topic is worth writing about and who ranks for it, and for a lot of people that is enough. Ben said on the podcast that he sees keyword research as more or less solved, and for the basics he’s right.
The differences show up at the edges though and they do matter, too.
Ahrefs says its keyword index holds 29 billion filtered keywords across 217 locations, out of 110 billion it has ever seen, and it adds things like traffic potential and parent topics, along 100s of filters that are very useful when doing keyword research.
Semrush is in the same league when it comes to the number of keywords.
Bigger databases, however, mostly show up in the long tail and in smaller countries, which is exactly where cheaper tools start returning thin results.
As for OpenSEO, it gives you volume, difficulty, CPC, intent and trends from DataForSEO in 143 countries, with the live Google results right next to the metrics, and a search costs about 5 cents at typical result limits according to its pricing estimator.
SEO Utils, however, pulls the same DataForSEO metrics at DataForSEO’s own prices, and adds some genuinely useful extras on top, like bulk Google and Bing autocomplete scraping, People Also Ask extraction and keyword clustering that runs on your own computer with no limits.
For keyword research, the two DataForSEO tools are good enough for almost anyone who isn’t doing this professionally across lots of markets.
If you are, Ahrefs or Semrush still give you more to work with.
Backlink analysis
This is the one place where I don’t think the cheaper tools are close, and Ahrefs leads even the other big one.
Ahrefs calls its index the largest index of live backlinks, updated every 15 to 30 minutes, with 35 trillion external backlinks of history and 494 billion pages in the index.
It runs its own crawler around the clock, owns its own servers (about 680,000 CPU cores at last count) and built a supercomputer that ranked among the 50 fastest in the world in 2024.
That’s the kind of investment a $10 tool can’t copy, and it’s why I’ve been team Ahrefs for years when it comes to links.
Semrush claims an even bigger number, 43 trillion backlinks according to DataForSEO’s own comparison, but these totals are counted in different ways (some are history, some are live links), so don’t read too much into the raw numbers.
OpenSEO and SEO Utils both use DataForSEO’s backlinks index of about 2 trillion live links, which DataForSEO says keeps lost links for up to a year, with history back to 2019.
It gives you backlinks, referring domains, anchors, a rank metric, a spam score and new and lost links.
That’s enough to see who links to a competitor, check whether a site is worth a guest post before you pitch it, or clean up a messy profile.
OpenSEO also ships a link prospecting skill for your agent, and SEO Utils has a proper backlink gap tool and bulk analysis across many domains.
What you don’t get is freshness and depth.
If you build links for a living, you want to see new links within hours, find every page that earned links on a topic, and check link intersects across five competitors, and that’s Ahrefs territory (Content Explorer for prospecting starts on its Standard plan).
My guide on backlinks that move rankings needs more data than any DataForSEO wrapper gives you.
Site audits
This is the part of OpenSEO that’s actually its own, and it’s… okay, I guess?
The site audit crawls your site and checks status codes, titles, meta descriptions, headings, indexability signals, image alt text, links and response times, with optional Lighthouse checks for performance and accessibility.
Paid accounts can crawl up to 10,000 pages per audit, the free plan covers 50 pages, and standard audits don’t eat your credits.
The limits move fast, which tells you a lot about this tool. The roadmap page still lists JavaScript rendering as not planned, and yet OpenSEO added optional JavaScript rendering to site audits in early October (it’s in the v0.1.11 release notes).
Scheduled audits are on the “soon” list, and support for crawling bot-protected sites is listed as a top priority.
If your site is a normal WordPress site where the content is in the HTML, JavaScript rendering doesn’t matter much anyway.
If you work on React or other JavaScript-heavy sites, the feature is new enough that I’d test it on a site you know well before trusting it.
Ahrefs’ Site Audit gives you 100,000 crawl credits a month on Lite with a cap of 25,000 pages per project, and Ahrefs Free audits any site you verify for nothing.
Semrush includes a full site audit on every paid plan. Both have years of checks behind them and handle JavaScript.
SEO Utils doesn’t have a full technical crawler in its feature list, but it does have log file analysis, which shows you how Googlebot and AI bots like GPTBot and ClaudeBot crawl your site, and that’s something most tools at any price don’t give you.
For real technical audits I’d still reach for Screaming Frog, and I run Screaming Frog, Ahrefs and Search Console on every WordPress audit I do.
OpenSEO’s crawler is fine for a quick health check of a small or medium site, but if you want to know what a proper audit should catch, my SEO audit checklist and technical SEO checklist cover it.
Rank tracking
This is where OpenSEO and SEO Utils beat the big two, and pretty clearly.
Ahrefs Lite tracks 750 keywords, but its pricing table lists weekly updates on every plan, Enterprise included.
Semrush’s SEO plan tracks 500 keywords daily. Both lock you into a fixed number of keywords per plan.
OpenSEO lets you pick daily, weekly or monthly checks, on desktop, mobile or both, down to city and region, and you pay per check.
According to OpenSEO’s own numbers, tracking 100 keywords weekly costs about $1.09 a month, and 500 keywords daily costs about $38 a month, which is a lot less than Semrush’s $139 SEO plan for the same 500 daily keywords.
Google Maps grid tracking in the app is still on the “soon” list, although the MCP got local rank grid tools in August.
SEO Utils goes further. It tracks unlimited keywords on Google or Bing, on desktop and mobile, with SERP features and competitors, plus Google Maps grid tracking in square, circle or custom shapes, and automations that export a PDF, email a client and fire a webhook when a tracking run finishes.
You pay DataForSEO’s prices and nothing else. The catch is that it’s a desktop app, so it needs your computer running (or the Remote Access add-on).
It helps to know why rank tracking got more expensive across the whole industry.
In September 2025 Google stopped supporting the parameter rank trackers used to pull 100 results in one request, so the same check suddenly took ten requests instead of one.
Flat-price tools have to absorb that cost somewhere, and weekly updates on the cheaper plans are one way to do it.
Pay-per-check tools pass the cost to you directly, which sounds worse but often works out cheaper, because you only pay for the keywords and the frequency you actually need.
Rankings are also only one part of knowing if your SEO is working, so don’t overpay for daily checks you won’t look at.
Domain overviews and competitor research
Plugging a competitor into a tool and seeing their traffic, top pages and best keywords is the thing most people do first in any SEO tool.
OpenSEO’s domain overview gives you estimated organic traffic, ranking keywords, top pages and backlinks, and since August you can look at an exact URL, a subfolder, a domain or subdomains.
A dedicated keyword gap page is on the “not planned” list, because OpenSEO wants you to ask your agent for that instead. SEO Utils, on the other hand, has traffic summaries, top pages, content gap, backlink gap, traffic competitors and bulk traffic checks across many domains at once.
Ahrefs’ Site Explorer is built on an organic traffic index of about 545 million keywords across 185 locations, with history (six months on Lite, two years on Standard, five on Advanced), paid keywords and content gap tools. Semrush has a similar setup with history back to 2012, and its Traffic & Market toolkit for clickstream-style traffic data is sold separately.
The DataForSEO tools are fine for a directional look at a competitor.
Where I’d want Ahrefs or Semrush is history and smaller sites. If I’m auditing a store that lost half its traffic two years ago, I need to see what happened. Traffic estimates on sites with a few thousand visits a month can be way off in any tool, and that’s where I’d trust the tools with their own clickstream and ranking data more.
AI visibility
Every SEO tool now tracks how ChatGPT and Google’s AI features mention your brand, and the four take very different approaches. OpenSEO lets you research prompts, see what ChatGPT answers and cites, and then track brand mentions, cited pages and competitors in ChatGPT, Gemini, Google AI Overviews, Claude and Perplexity on a daily, weekly or monthly schedule.
ChatGPT and Gemini answers are collected from their consumer sites, while Claude and Perplexity go through their APIs, which costs more per answer.
The pricing estimator puts one prompt on one AI platform at about a fifth of a cent, and the app shows you the cost before you run anything.
SEO Utils has an LLM rank tracker for Google AI Overviews, AI Mode and ChatGPT, with visibility scores, sentiment and the full responses, and combined with its log file analysis it gives you both sides, whether AI tools mention you and whether their bots actually crawl you.
Ahrefs is playing a different game here. Its Brand Radar index covers about 480 million prompts a month across AI Overviews, AI Mode, ChatGPT, Copilot, Gemini and Perplexity, so you can research how any brand shows up without setting up a single prompt yourself.
The catch is price. Lite includes just 5 tracked prompts of your own, and the full Brand Radar AI add-on starts at $199 a month on top of your plan.
Semrush’s AI Visibility Toolkit costs $99 a month on its own, or comes included for one domain from the Starter plan up.
If you want to track your own list of prompts cheaply, OpenSEO and SEO Utils are great.
If you want to understand how a whole market shows up in AI answers, including prompts you’d never think to track, Ahrefs is in another league.
And for all of these tools, AI answers change from one run to the next and nobody has an agreed way to measure visibility in them yet, so I’d watch trends over a few months rather than report any single number.
MCP and working through Claude
This is OpenSEO’s home turf, and the place where it beats all three.
Its MCP server sits at the center of the product, and it works with Claude, Codex, Cursor and ChatGPT (including ChatGPT’s free plan, according to the README).
OpenSEO’s comparison page says your agent gets 59 tools (the code on GitHub has added more since), covering keyword research, live Google results, competitors, backlinks, rank tracking, local search, Search Console and Google Analytics.
The agent can also write, not just read. It can save keywords, add and remove rank tracking keywords, create projects and save finished research as a report in your project.
Search Console and Analytics reads don’t use credits, and the project context means you’re not explaining your business to Claude from scratch every session.
Ahrefs includes its MCP from the Lite plan up, with up to 100 rows per request on Lite (250 on Standard, 500 on Advanced), and the data behind it is the best of the four.
On Lite you also have a cap of 1,000 credits per user each month, which an agent can chew through faster than you’d think.
Semrush’s MCP runs on API units. According to its own documentation, Semrush One Starter and Pro+ and the older SEO Classic Pro and Guru plans come with 50,000 units per billing cycle, while Advanced and Business need a separate API unit package.
Semrush’s own pages don’t fully agree on whether the new $139 SEO plan includes MCP, so if you’re signing up today, assume MCP starts at the $199 Starter plan.
SEO Utils sells its MCP as a $59.99 one-time add-on.
It runs locally with Claude Desktop, Claude Code or any MCP client, and can query your Search Console data, backlinks, traffic, keyword metrics, content gaps and indexing status.
It also works with n8n, Make and Zapier.
Personally, I run Claude connected to Ahrefs, Search Console and WordPress for research, data pulls and site work, so I have a decent feel for how much the MCP side matters now. I also use SEOUtils and its DataForSEO connection for specific things, like prompt tracking, ranking grids and keyword clustering.
For someone who does most of their SEO through an agent, OpenSEO’s MCP is the best designed of the four. Ahrefs’ MCP has much better data behind it. There’s nothing stopping you from connecting both, and that’s probably the smartest setup if you can afford Ahrefs.
If you’re still figuring out where AI actually helps, I wrote a separate piece on what AI is good for in SEO and where it falls over.
Where OpenSEO beats the big two, and where it isn’t close
Putting it all together, OpenSEO beats Ahrefs and Semrush on six things.
It’s far cheaper for light and medium use. It has no per-seat fees and no project limits. Its MCP and agent setup are better designed than either.
Rank tracking is more flexible, especially compared to Ahrefs’ weekly-only updates. It’s much simpler to learn.
And you can own it, either by self-hosting or by forking the code.
It loses on almost everything that depends on data and years of work, which I’d argue is crucial for doing the best possible SEO you can do.
Backlink data is the biggest gap. Historical data is the second, because DataForSEO’s backlink history only goes back to 2019 and you won’t get Semrush’s history back to 2012.
Traffic estimates on smaller sites are less reliable, and there’s nothing like Ahrefs’ Content Explorer for finding link prospects across the web.
The site audit is younger and lighter than either incumbent’s. There’s no PPC research beyond CPC data, no white-label reporting, no scheduled client reports yet, and no dedicated support team or uptime promise behind it, just two people, a support email and a Discord.
So the “Semrush killer” headline gets it backwards. OpenSEO isn’t taking the agencies and in-house teams that pay for Semrush. It’s taking the people who never would have paid for Semrush in the first place, and a chunk of the people who were only paying for it because nothing cheaper did the basics well.
SEO Utils is the closer rival
SEO Utils is the tool I’d compare OpenSEO to before Ahrefs or Semrush, because they share the same data and the same pitch of paying for usage instead of a big subscription.
The differences are in how they’re built and who builds them.
SEO Utils is a desktop app for Mac, Windows and Linux, built by Phuc Le, who started it in November 2023 and still runs it on his own.
It costs $69 once for a license with a year of updates, and if you don’t renew, you keep using the last version forever.
You plug in your own DataForSEO account and pay DataForSEO’s prices with no markup at all.
Your data stays on your own computer. The MCP server is $59.99 once, and Remote Access, which lets you open the app from any browser while your computer does the work, is $5.99 a month.
My starting point on SEO Utils was that it’s better for pricing and worse for shipping features fast, because it’s one developer with no funding behind him. The pricing part holds, however.
Over a year, SEO Utils costs $69 (or about $129 with the MCP) plus your raw DataForSEO usage, while OpenSEO costs at least $120 plus 28% on anything past the included usage.
The feature part is more complicated than I expected.
Right now SEO Utils has more of the features agencies and freelancers use every week. It has white-label reports with your own logo and domain, password-protected client dashboards that update themselves, Google Maps grid tracking, automations, Search Console history beyond Google’s 16 months, log file analysis, SEO split tests and internal link suggestions that you can push straight into WordPress.
Phuc says on the homepage that SEO Utils ships improvements daily, and judging by that feature list, I believe him.
OpenSEO, meanwhile, is a two-person company that only just got its YC money. Its reports can be shared with clients through a public link, but white-label branding and scheduled client reports aren’t there yet.
Where funding should help OpenSEO is over the next year or two. Money buys engineers, hosting, support and polish, and one person can only do so much.
Both tools have the same risk if their founder walks away, and both have an answer to it.
SEO Utils lets you keep using the version you paid for, with your data on your own machine.
OpenSEO’s code is MIT-licensed, so anyone can pick it up.
If you’re a freelancer or consultant who works from one computer, wants client reports and local grid tracking, and likes owning your data, I’d pick SEO Utils.
If you want something in the cloud that you can open from anywhere, share with a teammate, connect to ChatGPT or Claude on the web, and use without installing anything, I’d pick OpenSEO.
Semrush’s bloat, and Ahrefs creeping the same way
The thing that sells OpenSEO more than any feature is how much smaller it is.
One of the testimonials on its homepage sums up the pitch as “All of the value, none of the bloat,” and when you put it next to Semrush, it’s hard to argue.
Semrush today is a marketing suite with SEO inside it. Its newsroom describes it as a brand visibility platform covering SEO, AI search, content marketing, paid media and social.
In May 2026 it reshuffled its plans, so the lineup is now SEO at $139 a month, then Starter at $199, Pro+ at $299 and Advanced at $549, with AI visibility bundled in from Starter up, while the old Pro, Guru and Business plans live on as legacy SEO Classic plans.
Then the add-ons start. The AI Visibility Toolkit is $99 a month and the Content Toolkit is $60 a month, local SEO is $30 to $60 per location per month, there’s a Social toolkit, an Advertising toolkit, a Traffic & Market toolkit and an Agency Growth Kit, and every extra user costs $45 to $100 a month.
A solo consultant on Starter who adds the Content Toolkit and Local Pro for one location is looking at somewhere around $320 a month, for one person.
None of that is bad if you’re a marketing team that uses all of it. Most people doing SEO for their own business use a fraction of it and pay for the whole thing, or worse, never find the tool they actually needed because it’s buried under dozens of others.
Ahrefs is cleaner, and its core is still one subscription for SEO data.
But it’s been drifting the same way. In August 2025 it launched a Social Media Manager for planning and scheduling posts to LinkedIn, X, Instagram and Facebook, free while it’s in beta, and I still can’t see why an SEO tool needs to schedule my LinkedIn posts.
It also has Web Analytics, Bot Analytics, a Google Business Profile monitor, a Report Builder and a separate AI marketing platform called Letaido.
And the add-on list is growing. According to its pricing page, Brand Radar AI starts at $199 a month, custom AI prompt packages run $50 to $250 a month, Report Builder is $99, and project boosts cost $20 or $200 per project each month.
So Ahrefs isn’t add-on free anymore either. The AI visibility tracking you’d actually want costs more than a second Lite plan.
OpenSEO has one plan with every feature, unlimited projects and no seat fees, and its roadmap includes a “not planned” list, which is something I almost never see from a software company.
Keyword-density style content scoring and a dedicated keyword gap page are on it (JavaScript rendering in audits was too, until OpenSEO shipped it in October anyway).
The reasoning, written right there on the roadmap, is that advanced features make tools less approachable for people new to SEO, so those workflows go into a community skill library instead.
It’s a real trade-off, though. If you know what you’re doing, you’ll miss things in OpenSEO that Ahrefs and Semrush have had for years.
And a lot of OpenSEO’s power lives in your AI agent, not in the app, so if you don’t work through Claude or ChatGPT, you get noticeably less out of it.
OpenSEO vs Mangools
I reviewed Mangools a couple of weeks ago, and my verdict was that it’s enough if your SEO work is mostly keyword research, checking who ranks and tracking a few hundred keywords on your own site.
OpenSEO goes after the same people, so here’s how the two compare. The Mangools prices are the US prices from its pricing page at the end of September 2026.
| Mangools Basic | OpenSEO | |
| Price | $61/mo, or $37.70/mo billed yearly | $10/mo with $10 usage included, then pay per use |
| Keyword data | Volumes close to Google Keyword Planner, difficulty from Moz and Majestic metrics | DataForSEO, 143 countries |
| Backlinks | Majestic index, 100,000 rows a month | DataForSEO, about 2T live links |
| Site audit | None | Own crawler, up to 10,000 pages |
| Rank tracking | 200 keywords, weekly | Any number, daily, weekly or monthly, pay per check |
| AI tracking | 500 prompts across 8 platforms, included | ChatGPT, Gemini, AI Overviews, Claude and Perplexity, pay per check |
| MCP and API | Included on every plan | MCP is the core of the product |
| Track record | Around since 2014 | Months old |
OpenSEO wins on price for light use, on having a site audit at all, and on rank tracking flexibility.
Mangools wins on maturity, on a polished interface that doesn’t need an AI agent to shine, and on AI prompt tracking, where 500 prompts across eight platforms included in every plan is hard to beat at that price.
If you never want to touch Claude or ChatGPT for your SEO, I’d still point you toward Mangools, because its whole product is built around being easy to use by hand.
If you’re happy to work through an agent, OpenSEO plus Search Console plus the free version of Screaming Frog covers more of what a small site needs than Mangools Basic does, for a lot less money.
Should you use the cloud version or self-host it?
For most people, the cloud version is the right call.
It costs $10 a month, that includes $10 of usage, and if you go over you buy top-up credits that never expire (the included $10 resets every month).
There’s a free trial with a small amount of credits and no card needed, a 30-day money-back guarantee, and you can cancel any time.
Search Console and Google Analytics connect with a normal Google sign-in, your agent connects to the hosted MCP with one URL, and OpenSEO says you can invite teammates with no per-seat fee.
Self-hosting is free for the app itself.
You bring your own DataForSEO account and pay DataForSEO directly, so you skip the 28% fee.
New DataForSEO accounts get $1 of free credit, and after that the minimum top-up is $50, but that balance never expires and works across all of DataForSEO’s APIs.
One thing that changed recently in favor of self-hosters is that DataForSEO used to require a $100 monthly commitment for its Backlinks API, and it dropped that requirement in July 2026, so backlinks are now pay as you go too.
OpenSEO gives you two ways to self-host.
The Docker version is the simple one, and it’s meant for running on your own computer. It runs with app login turned off, so OpenSEO’s Docker guide tells you to only put it on the internet behind your own password-protected proxy or a private network, and it’s single user, with multi-user Docker support on the “soon” list.
The Cloudflare version is the one OpenSEO recommends if you want it online, across devices or for a team. It works on Cloudflare’s free plan, backs up the database automatically, and uses Cloudflare Access for logins.
Either way, a few things are on you. You need your own Google OAuth client to connect Search Console, which OpenSEO says takes about ten minutes the first time.
The in-app agent and AI prompt suggestions need an OpenRouter API key.
Updates are yours to run. And self-hosted installs send anonymous usage counts back to OpenSEO by default (no URLs, keywords or prompts), which you can switch off with one environment variable.
The xCloud option
I host my own sites on xCloud, and it has OpenSEO as a one-click app.
It deploys the Docker version, but it puts an authentication proxy in front of every OpenSEO page, so the no-login Docker app never faces the internet directly.
That solves the biggest problem with Docker self-hosting. It also handles SSL and keeps your data on a persistent volume, so it survives restarts.
On xCloud, OpenSEO costs $24.99 a month on its own server, or nothing extra if you add it to a server you already have, as long as that server meets xCloud’s minimum of 4GB RAM, 2 CPU cores and 8GB of free disk.
When I checked, xCloud’s template was still on OpenSEO v0.1.4, while OpenSEO itself had already shipped several newer releases, including JavaScript rendering in audits and Claude and Perplexity tracking.
OpenSEO puts out a new version every week or two, so look at the version number in OpenSEO’s settings and see how quickly the template gets updated.
It’s also the single-user Docker setup, so everyone who logs in through the proxy shares one workspace. For a team that needs proper accounts, the Cloudflare route is the better fit.
What it actually costs
The 28% fee sounds like a lot until you do the math.
Here’s what four types of users would pay each month, where “data” means what the same lookups would cost at DataForSEO directly.
| Your monthly data usage | Hosted OpenSEO | Self-hosted on a server you already run | Self-hosted on its own xCloud server ($24.99) |
| $5 (a small business checking a few things) | $10 | $5 | $29.99 |
| $25 (a freelancer with a handful of sites) | $32 | $25 | $49.99 |
| $90 (heavy daily tracking and research) | $115.20 | $90 | $114.99 |
| $200 (lots of clients or lots of tracking) | $256 | $200 | $224.99 |
The break-even for a dedicated xCloud server is about $90 a month of data, which is about $114 a month on hosted OpenSEO.
Below that, hosting it yourself on a new server costs more, not less.
On a server you’re already paying for, self-hosting is always cheaper, but for a light user that’s a saving of a couple of dollars a month, and you’d still have to top up DataForSEO with $50 up front.
So the 28% is rarely the reason to self-host.
The good reasons are control (your project data, rank history and client research sit on your own server), customization (you can add a DataForSEO endpoint OpenSEO doesn’t cover, change what a tool returns or build your own features on top), and not depending on a two-person startup staying alive and keeping its prices where they are.
If none of those matter to you, use the hosted version and spend the time on your SEO instead.
Who OpenSEO is for (and who should skip it)
OpenSEO is a really solid option for anyone who can’t or won’t pay $130 to $200 a month for Semrush or Ahrefs and is happy with directional data.
That covers business owners doing their own SEO, solo founders marketing their own product, bloggers and affiliate site owners, freelancers on a tight budget, and anyone who already works through Claude or ChatGPT and wants that agent to stop guessing at search volumes.
It’s also great for developers and tinkerers who want an SEO tool they can change.
It’s not an agency tool, at least not yet.
There’s no white-label reporting or scheduled client reports, JavaScript rendering in audits is brand new, the Docker self-host is single user, the backlink data won’t hold up for serious link building, and there’s no dedicated support team or uptime guarantee behind it.
Ben said on the podcast that an agency with a hundred clients spending $1,000 a month on software could get away with something like $50 a month in OpenSEO, and on data costs alone he’s probably right.
But an agency would still need Ahrefs or Semrush for links, history and client reporting, so OpenSEO would be an extra layer for the agent work, not a replacement. The same goes for anyone whose main job is link building or PPC.
If I had to set someone up today, this is roughly what I’d recommend.
- On less than $20 a month, use hosted OpenSEO with Google Search Console, the free version of Screaming Frog (up to 500 URLs) and Ahrefs Free for audits and backlinks on your own site.
- As a freelancer watching costs, use SEO Utils with your own DataForSEO account for rank tracking, local grids and client reports, add a Screaming Frog licence, and use OpenSEO if you want the agent side in the cloud.
- If SEO is your job, keep Ahrefs (or Semrush) for links, history and competitor research, use Screaming Frog for audits, and treat OpenSEO or SEO Utils as the cheap layer for rank tracking and agent work.
OpenSEO won’t kill Semrush.
What it might kill is the reason a small business owner ever needed Semrush in the first place, and for a $10 tool built by two people in under a year, that’s already a pretty big deal.
If you want more breakdowns like this one, Built to Rank is my occasional newsletter on what’s actually working in SEO. It only goes out when I have something worth sending.