Comparison
Ahrefs alternative: OpenSEO vs Ahrefs
Ahrefs is a closed SEO suite on a monthly plan. OpenSEO is open source: you run it, own it, and pay only for the data you look up. Here is how they differ, and when Ahrefs is the better buy.
Starting price
Ahrefs pricing vs OpenSEO
Ahrefs Lite: $129 a month.
- 1 user, 1,000 credits a month
- Extra users $40 a month each
- No free trial on paid plans
List prices on monthly billing, checked in October 2026. Ahrefs sets its own prices and changes them; check its pricing page for current figures. OpenSEO's data costs are at the time of writing; see Pricing.
OpenSEO vs Ahrefs: feature comparison
| Ahrefs | OpenSEO | |
|---|---|---|
| Source code | Closed | Open source (MIT), self-hostable |
| Price model | Monthly plan from $129; usage counted in credits | Open-source software; data paid per lookup, from $0.01 |
| Users | Paid per seat beyond the first | No seats: self-host it for your whole team |
| Keyword and backlink data | Own crawler and index, among the largest | A large commercial dataset, through a data provider |
| Rank tracking | 750 tracked keywords on Lite | $0.10 per keyword and device for the top 100, on your schedule or on demand |
| AI agents | Check their current plans | 66 MCP tools and a REST API on every install, spending capped per call |
When to choose Ahrefs
- Link building is your full-time job and you need the deepest backlink index.
- You want one vendor with support, training and every report built in.
When to choose OpenSEO
- You do SEO a few hours a month and a monthly plan sits idle most of it.
- You want an AI agent to do the research, with a hard spending cap per call.
- You want to own the software and your data.
FAQ
OpenSEO vs Ahrefs FAQ
Is OpenSEO a free Ahrefs alternative?
The software is: OpenSEO is open source under the MIT licence and free to self-host, with no seats and no plan. Search data, like keyword volumes, rankings and backlinks, is paid per lookup at the price shown before it runs, so a quiet month costs little. The crawler, the site audit and your Search Console data cost nothing.
Is the data as good?
OpenSEO’s search data comes from YepAPI, a provider of a large commercial SEO dataset. It covers keyword volume, rankings, backlinks and SERPs well, but the big suites run their own crawlers and keyword databases, which are larger. For most site owners the difference matters less than the price; for agencies doing link research all day it can matter more.
What does OpenSEO actually cost?
The software is open source and free to self-host. Search data is paid per lookup, at the price shown before it runs: about $0.08 for a keyword search of 150 ideas, $0.10 for a rank check of the top 100. Tracking 100 keywords weekly on desktop costs about $43 a month.
Can I move from Ahrefs?
There is nothing to migrate for research: run the same searches in OpenSEO. For rank tracking, paste your keyword list into a new tracker; history starts from your first check.
Ahrefs is a trademark of its owner. OpenSEO is not affiliated with or endorsed by Ahrefs.