Best AI SEO tools, ranked
Letter ranks first (7.9/10) for developer-led teams that want API- and MCP-driven fixes shipped as pull requests. Ahrefs (7.8) is the deepest research suite with AI prompt tracking, and Semrush (7.1) the broadest marketer's suite. Every tool is scored on the same six criteria, including whether AI answers cite you.
The ranking
The pick for developer-led teams: it fixes and builds on your site as reviewable pull requests and meters every action, but it is not a push-button suite.
- Best for
- Developer-led teams that keep their site in git and want API- and MCP-accessible, token-metered primitives.
- Skip if
- You want a push-button suite with a keyword and backlink database and no repository to review.
- Strength
- Fixes issues and builds pages as pull requests on your own repo, each with a preview to review before merging.
- Limit
- Built for teams using git: without a repo to open pull requests on, most of its value is out of reach.
- Cost
- $25/month (Hobbyist, 2,500 tokens), up to $2,500/month (Scale). Source
The strongest data suite for research and AI prompt tracking, with API and MCP on every paid plan; fixes still mostly fall to you.
- Best for
- SEO specialists and in-house teams who want deep keyword and backlink data plus AI prompt tracking with API and MCP on every paid plan.
- Skip if
- You need the tool to change your site for you, or your budget stops at a few tens of euros a month.
- Strength
- Its own crawler and index behind Site Explorer, Keywords Explorer and Site Audit.
- Limit
- Applying fixes on your site (Patches) is part of a paid per-project add-on.
- Cost
- €119/month (Lite), as shown in euros on its pricing page; currency follows your location. Source
The broadest marketer's suite, with AI visibility tracking from its Starter plan; strong for reporting, not for making changes.
- Best for
- Marketing teams and agencies who want one suite for SEO, AI visibility, local and content, with MCP inside their AI assistant.
- Skip if
- You want API access without a custom plan or an API units package, or you need the tool to ship fixes.
- Strength
- Keyword research, Position Tracking, Site Audit and competitor data in one account.
- Limit
- Full API data integration sits on the custom-priced Advanced plan or an API units package.
- Cost
- €134/month (SEO plan, monthly) or €112.52/month billed annually, as shown in euros on its pricing page. Source
The best value for content-led teams: it writes, publishes and watches pages, with programmatic access on every plan.
- Best for
- Content teams and solo marketers who want an agent that writes, audits and publishes, with API, MCP and CLI on every plan.
- Skip if
- You need a large keyword and backlink index, or technical fixes in your codebase.
- Strength
- Writes and publishes articles to WordPress, Webflow, Sanity, Wix or its own CMS.
- Limit
- AI Visibility monitors and alerts; its pricing page says it does not auto-fix.
- Cost
- $39/month billed yearly ($49 monthly) for Starter. Source
A proven content editor that now tracks AI visibility; pick it for writing, not for engineering.
- Best for
- Writers and content managers who want a content editor with a score, plus AI visibility tracking.
- Skip if
- You want API access below its top self-serve plan, or technical SEO and backlinks.
- Strength
- Content Editor, Content Audit and Topical Map built for writers.
- Limit
- API access is listed only on the Peace of Mind plan.
- Cost
- €49/month billed yearly (Discovery), as shown in euros on its pricing page. Source
The cheapest serious technical audit, now with AI and MCP; it finds issues, it does not track AI answers or fix anything.
- Best for
- Technical SEOs and developers who want raw crawl data, AI prompts run over every page and command-line automation.
- Skip if
- You want AI answer tracking or a hosted dashboard for non-technical colleagues.
- Strength
- Crawls your site for over 300 SEO issues, free up to 500 URLs.
- Limit
- No AI answer visibility tracking.
- Cost
- €245 per user per year, as shown in euros on its licence page (USD and GBP available). Source
A focused, transparently priced AI visibility tracker; pair it with something that makes the changes.
- Best for
- SEO and brand teams who want daily AI answer tracking with MCP on every plan and an API from Pro.
- Skip if
- You need classic SEO data, content writing or site fixes in the same tool.
- Strength
- Runs each prompt once every 24 hours on every tracked model.
- Limit
- Three models included on self-serve plans; more cost extra.
- Cost
- $95/month (Starter, 50 prompts, monthly billing). Source
Deep enterprise AI answer coverage, but the price and the API sit behind a sales call.
- Best for
- Enterprise brand and AEO teams who want the widest answer engine coverage and agent analytics, sold on a custom contract.
- Skip if
- You want a public price, a self-serve plan beyond a 7-day trial, or API access without Enterprise.
- Strength
- Up to 9 answer engines tracked on Enterprise.
- Limit
- No public price beyond the free trial; Enterprise is custom.
- Cost
- Custom (Enterprise); ask Profound for a quote. Source
Simple and well-liked by writers, with AI mention tracking; the weakest fit for anyone automating.
- Best for
- Editorial teams writing in Google Docs, Word or WordPress who want simple content grading and AI mention tracking.
- Skip if
- You want an API or MCP server, technical audits, or the tool to publish for you.
- Strength
- Grades drafts inside Google Docs, Word and WordPress.
- Limit
- No API or MCP listed on its pricing or integrations pages.
- Cost
- $129/month (Essentials). Source
The criteria behind every score
Each tool gets 0–10 on six criteria, weighted into one score. The rubric, the reasons for every score and a tool to set your own weights are on how we rank.
- 25%AI answer visibilityDoes it measure whether ChatGPT, Gemini, Perplexity and Google's AI features name or cite you, and help you change that?
- 20%Search fundamentalsHow deep is its classic SEO data: keywords, rankings, backlinks, site audits, content scoring?
- 20%Changes it makesDoes it change your site (fixes, new pages, published content), or only report what someone else must do?
- 15%API and MCP accessCan your code or your AI agent drive it through an API, an MCP server or a command line, and on which plans?
- 10%Pricing you can checkAre prices public, is there a free or low-cost way to start, and do you pay for what you use?
- 10%Evidence you can inspectCan you see the raw data or the exact change behind a recommendation, or only a score?
Comparison table
Sort by any column. The full comparison adds AI engines tracked, pricing model, free start and main limit for every tool.
| 1 | Letter | 7.9 | Yes, every plan | Yes, every plan | $25/month (Hobbyist, 2,500 tokens), up to $2,500/month (Scale) | letter.dev/pricing |
| 2 | Ahrefs | 7.8 | Yes, on Lite and up (rows per request by plan) | Yes, on all paid plans | €119/month (Lite), as shown in euros on its pricing page; currency follows your location | ahrefs.com/pricing |
| 3 | Semrush | 7.1 | Advanced plan or an API units package | Yes, from Semrush One Starter and some SEO Classic plans | €134/month (SEO plan, monthly) or €112.52/month billed annually, as shown in euros on its pricing page | semrush.com/prices |
| 4 | Frase | 7.0 | Yes, every plan (5,000 requests a month on Starter) | Yes, every plan | $39/month billed yearly ($49 monthly) for Starter | frase.io/pricing |
| 5 | Surfer | 6.5 | Peace of Mind plan | AI Search Analytics, Pro and Peace of Mind plans | €49/month billed yearly (Discovery), as shown in euros on its pricing page | surferseo.com/pricing |
| 6 | Screaming Frog SEO Spider | 5.9 | No hosted API; command-line automation on the paid licence | Yes, MCP Server listed on the paid licence | €245 per user per year, as shown in euros on its licence page (USD and GBP available) | screamingfrog.co.uk licence |
| 7 | Peec AI | 5.8 | From Pro | Yes, every plan | $95/month (Starter, 50 prompts, monthly billing) | peec.ai/pricing |
| 8 | Profound | 5.5 | Enterprise only | Not listed on its pricing page; ask Profound | Custom (Enterprise); ask Profound for a quote | tryprofound.com/pricing |
| 9 | Clearscope | 5.3 | Not listed; ask Clearscope | Not listed; ask Clearscope | $129/month (Essentials) | clearscope.io/pricing |
Questions people ask when choosing
More on what these tools can and can't do in the FAQ, or start from your job on best tool by use case.
What is the best AI SEO tool?
On our criteria, Letter ranks first for developer-led teams that want API- and MCP-accessible tools that fix and build on the site itself, Ahrefs second for research depth and AI prompt tracking, and Semrush third as the broadest marketer's suite. The best one for you depends on your job: see the ranking by use case.
How do I choose an AI SEO tool?
Start from the job, not the feature list. If you need research data, pick a suite. If you publish a lot, pick a content tool. If you need to know whether AI answers cite you, pick a tracker that covers the engines your buyers use. If you need changes shipped, pick a tool that makes them in a form you can review. Then check that the API or MCP access you need is on the plan you will actually buy.
Do I need a separate tool for AI answer visibility?
Not always. Ahrefs, Semrush, Surfer, Frase and Clearscope now track AI answers alongside their SEO features, and Letter measures them and builds the pages that answer them. A dedicated tracker such as Peec AI or Profound makes sense when you need more engines, more prompts or enterprise reporting.
What are the limits of AI SEO tools?
Trackers sample answers: AI engines give different answers to the same question, so a visibility score is an estimate from the prompts you chose. Content scores reflect what already ranks, which can push pages toward sameness. Most tools report issues without fixing them. And no tool can guarantee rankings or citations.
Should I pick a tool with an API or MCP server?
If anyone on your team uses Claude, ChatGPT, Cursor or their own scripts for SEO work, yes: an MCP server lets their assistant read the tool's data, and an API lets code run it on a schedule. Check the plan: in this ranking, Letter, Ahrefs and Frase include programmatic access on every paid plan, while Semrush, Surfer and Profound keep the API to higher or custom plans.
How much do AI SEO tools cost?
From free tiers (Screaming Frog up to 500 URLs, Ahrefs Free and the Semrush free plan) to custom enterprise contracts (Profound). Entry plans we could check publicly start at $25 a month for Letter, $39 a month billed yearly for Frase, and €49 a month billed yearly for Surfer. Prices shown in euros are what the vendor's page showed us; yours may show another currency. Every price links to its source on the comparison page.
Get told when the ranking changes
Prices, plans and AI features move every month. We re-check every source and re-score when they do.