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MentioningYou vs Relixir
A YC-backed startup whose AI agent, Rex, monitors AI search visibility and automatically writes and publishes content to close the gaps it finds.
What Relixir is
Relixir Inc. is a 2025-founded startup, backed by a $2M seed round in November 2025 from Y Combinator and other investors, that built Rex — an AI agent combining visibility monitoring across ChatGPT, Perplexity, Claude and Google AI Overviews with automated content generation, backlink outreach and technical site audits. Relixir describes itself as forward-deployed, meaning its team configures and launches Rex for each client rather than offering pure self-signup.
Side by side
| MentioningYou | Relixir | |
|---|---|---|
| Approach | Visibility tracking plus prioritized actions you execute | Visibility tracking plus autonomous content generation and publishing |
| Engines tracked | ChatGPT, Claude, Gemini, Perplexity, Google AI, Copilot | Google AI Overviews, ChatGPT, Perplexity, Claude |
| Pricing | Free scan plus published plans | Fully custom pricing, not published |
| Setup | Self-serve signup | Forward-deployed — Relixir's team configures your account |
Where Relixir holds up well
- Closes the loop from identifying a visibility gap to publishing content that addresses it, without manual content work
- Backed by Y Combinator with customer growth claims (including a cited 17% inbound lead lift in six weeks for early adopters)
- Bundles technical audits — crawlability, backlinks, meta tags — alongside AI visibility monitoring
Worth knowing before you commit
- Automated content generation and publishing means less direct control over brand voice than a monitoring-only tool
- Pricing is fully custom and not published, and onboarding runs through Relixir's forward-deployed team rather than instant self-signup
Frequently asked questions
Does Relixir publish content to my site automatically?
Yes — Rex, Relixir's AI agent, generates GEO-optimized content on a 30-60 day refresh cycle and can publish it directly to your CMS, a different model than a monitoring-only tool like MentioningYou where you decide what to act on.
Who is Relixir built for?
It's aimed at B2B SaaS and fast-growing teams that want visibility monitoring and content remediation handled with minimal manual effort; the company cites over 400 fast-growing B2B customers.
Is Relixir self-serve?
Not fully — Relixir describes itself as forward-deployed, meaning its team configures and launches Rex for each client rather than an instant self-signup flow.