Replai: AI Replies for YouTube Comments

About

Stop spending hours replying to YouTube comments manually. Replai generates smart, natural-sounding replies in one click - right inside YouTube. Whether you're a creator, a brand, or a community manager, Replai helps you stay engaged with your audience without the burnout.

HOW IT WORKS

1. Install the extension and add your AI provider API key (or enable PRO Mode).
2. Open any YouTube video and scroll to the comments.
3. Click the "Generate Reply" button next to any comment.
4. Review, edit if needed, and post - done.

It's that simple. No copy-pasting, no switching tabs, no prompt engineering.

CHOOSE YOUR AI

Replai gives you the freedom to pick the AI that works best for you:
- Groq (Llama, Qwen, Gemma, and more) - blazing fast, many free models
- OpenAI (GPT-5, GPT-4, o3, o4-mini) - industry-leading quality
- Anthropic (Claude Opus, Sonnet, Haiku) - thoughtful, nuanced replies
- Google (Gemini 3, 2.5, Gemma) - great balance of speed and quality

Bring your own API key and use the model you prefer. Switching between providers takes one click.

PRO MODE — FOR CREATORS WHO WANT MORE

Upgrade to PRO Mode at https://replai.pro and unlock the next level:
- Context-Aware AI - train the AI with your channel info and documents so every reply feels authentic.
- Personalized Writing Style - the AI learns and mimics your unique voice.
- No setup needed - skip the API keys, just enter your PRO token and go.
- Pay-as-you-go - no monthly subscription, just top up credits when you need them.
- Priority support - get help fast via chat and email.
- Advanced Analytics - track your engagement and growth.

FULLY CUSTOMIZABLE

Make every reply feel like you wrote it yourself:
- 5 reply styles: Simple, Business, Academic, Enthusiastic, Friendly
- 4 points of view: Single creator, Team, Single viewer, Group of viewers
- 5 length options: from Very Short to Very Long
- Pick your preferred AI model from 40+ options

YOUR DATA STAYS YOURS

We take your privacy seriously:
- API keys are stored locally on your device only - never sent to our servers.
- The extension works exclusively on YouTube - it has zero access to any other website.
- No personal data is collected. No comments, no browsing history, no account info.
- Open and transparent: the extension collects only anonymous technical analytics (see Data Collection section below for details).

SECURITY VERIFIED

The extension's source code has been audited for security vulnerabilities by Anthropic Claude Opus 4.6 - an advanced AI security analysis tool. The audit covered XSS, code injection, data leaks, and other OWASP Top 10 risks. The audit did not identify any security vulnerabilities. Replai is built with security best practices in mind.

PERFECT FOR

- YouTube creators who want to reply faster and keep their audience engaged
- Social media managers handling multiple channels
- Brands and businesses building community on YouTube
- Anyone who wants to save time and stay active in the comments

REQUIREMENTS

- Free Mode: an API key from any supported AI provider (Groq, OpenAI, Anthropic, or Google).
- PRO Mode: a REPLAI.PRO API key — get started at https://replai.pro