Visit website Free to browse · updated 2026-06-23
What is X-Brain?
This browser extension integrates with the X interface to analyze tweets and produce context-aware replies. It leverages real-time AI processing to match the tone and sentiment of original posts while avoiding repetition through history checks. Additional capabilities include image and video analysis for tailored responses as well as options for creating original content. Users can select from various styles and languages to reach broader audiences effectively. The tool provides a free tier with daily limits and a paid plan for expanded access including unlimited usage and advanced features. Installation involves adding the extension and obtaining a free API key for operation.
Key features
Groq AI-powered instant replies
Context-aware AI with sentiment and thread analysis
14 languages and 12 tone styles
Photo and video analysis
Original content generation
Authenticity scoring
Persona mode
AI models X-Brain uses
Llama 3.3 70B
via Groq AI
What you can use X-Brain for
Social Media Engagement
Generate personalized replies to tweets using Groq AI for faster interaction on X while maintaining natural tone through sentiment and thread analysis.
Original Content Creation
Produce fully original posts on any topic in a chosen voice or persona to build brand presence on X without manual drafting.
Multilingual Audience Reach
Create and reply in 14 languages across 12 tone styles to engage global users on X with context-aware outputs.
How to use X-Brain
- 1Install the extension from the Chrome Web Store
- 2Obtain a free Groq API key
- 3Browse X and hover over any tweet
- 4Click the X-Brain button to generate a reply
- 5Adjust tone, language or regenerate as needed
- 6Send the reply with simulated human typing
X-Brain pricing
Pricing model: Freemium. Plan details are indicative — check the site for current prices.
FREE
Free
- 10 comments/day
- 2 tone styles
- TR + EN languages
PRO
Popular$6.58/mo
- Unlimited comments
- 12 tone styles
- 14 language support
- Visual & Video AI
- Priority support
- Billed $79/year
Editor's verdict
Pros
- +Runs entirely in browser with zero data collection
- +Free plan available with no credit card
- +Fast generation via Groq
Cons
- –Free plan limited to 10 comments/day
- –Requires separate Groq API key
Our take: X-Brain is a solid marketing & seo choice. It's valued for runs entirely in browser with zero data collection and free plan available with no credit card. The main trade-off is free plan limited to 10 comments/day. A good pick if you want capable AI without a high upfront cost.
Frequently asked questions
It uses Groq AI with Llama 3.3 70B to analyze tweet context, sentiment, and thread history for human-like responses.
Summary
X-Brain is a solid marketing & seo choice. It's valued for runs entirely in browser with zero data collection and free plan available with no credit card. The main trade-off is free plan limited to 10 comments/day. A good pick if you want capable AI without a high upfront cost.
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