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Semrush is the broader SEO suite — keyword research, backlinks, Site Audit, Position Tracking, Local SEO, and an AI Visibility Toolkit. rank.ai is narrower and deeper on AI visibility plus local. Here's an honest, sourced feature-by-feature comparison anchored on the AI surface that actually overlaps.
Semrush (now an Adobe company) is the largest SEO platform on the market — 26.4B keywords, 43T backlinks, 808M domain profiles, 142 geo databases, Site Audit, Position Tracking, Backlink Analytics, Local SEO, Listing Management, Map Rank Tracker, Content Marketplace, plus their AI Visibility Toolkit (also branded the AI SEO Toolkit inside their features page). It’s a deep, deca-billion-dollar suite that we don’t pretend to match on breadth. rank.ai is the opposite shape: focused on AI rank tracking across nine LLM surfaces (ChatGPT, Claude, Gemini, Perplexity, Grok, AI Overviews, DeepSeek, Meta AI, plus Copilot in flight), local SEO with geo-grid heatmap and Apple Maps coverage, and an article-gen pipeline that publishes to your CMS. The honest split: Semrush wins on suite breadth (backlinks, Site Audit, keyword database depth, decade-plus of data scale). rank.ai wins on AI-visibility depth (we publish our LLM surface list openly; Semrush doesn’t), geo-grid block-level visualization, embeddable scan widget, and a public API that exposes the full visibility surface — including AI rank, which Semrush’s public API does not. For most teams these are complementary tools, not substitutes.
Every row is verified against Semrush’s public product pages (linked in the page source). Where Semrush’s marketing copy doesn’t confirm or deny something, the row reads “Verify with vendor” rather than guessing. The top half focuses on the AI visibility surface that actually overlaps; the bottom half is broader SEO suite where Semrush wins most rows honestly.
| Feature | rank.ai | Semrush |
|---|---|---|
ChatGPT rank tracking | ||
Claude rank tracking | Verify with vendor | |
Gemini / Google AI Mode rank tracking | ||
Perplexity rank tracking | Verify with vendor | |
Grok rank tracking | Verify with vendor | |
Microsoft Copilot rank tracking | Coming soon | Verify with vendor |
Google AI Overviews rank tracking | ||
DeepSeek rank tracking | Verify with vendor | |
Meta AI rank tracking | Verify with vendor | |
Brand mention sentiment in AI answers | ||
Citation source leaderboard | ||
Share-of-voice across AI assistants | ||
Daily refresh on tracked AI prompts | Verify with vendor | |
Backlink index + analysis | — | |
Site Audit (technical SEO crawler) | — | |
Keyword research database | Partial | |
Geo-grid heatmap for local pack | Verify with vendor | |
Apple Maps rank tracking | Verify with vendor | |
Citations / directory listing management | ||
Embeddable AI-visibility scan widget | — | |
MCP server for agentic AI | ||
Public API for AI rank queries | No AI rank API | |
White-label reports |
Spin up rank.ai alongside your existing Semrush account and run them side by side for a billing cycle. Semrush covers the broader SEO suite; rank.ai goes deeper on AI visibility + local. For most teams the answer isn’t either / or — it is which is the primary tool for each job.

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