Learn a language while you chat with AI
Murmur annotates your AI conversations with personalized vocabulary and grammar. No flashcards, no courses — just learning that happens while you work.
How it works
Three steps to fluency
Install the extension
Add Murmur to Chrome in one click. Pick your target language and current level.
Chat with AI normally
Use ChatGPT or Claude as you always do. Murmur watches quietly in the background.
Learn from annotations
Personalized vocabulary and grammar appear inline — spaced to match your memory.
Features
Built around how memory actually works
Lives inside
ChatGPT & Claude
No new apps, no tab switching. Annotations appear right in your conversation.
8 languages
Spanish, French, German, Italian, Portuguese, Ukrainian, Japanese, and Chinese.
Audio pronunciation
Tap any word for native audio — accent and all.
Spaced repetition
Half-life regression tracks each word individually. You see it right when you're about to forget.
Adaptive difficulty
Murmur learns what you know. Mastered words fade. New ones appear.
Pricing
Simple pricing
Free to start. Unlimited when you’re ready.
- 10 annotations per day
- Audio pronunciation
- All 8 languages
- All platforms
- Unlimited annotations
- Audio pronunciation
- All 8 languages
- All platforms
- Priority support
Start absorbing a language today
Add Murmur to Chrome. Pick your language. Keep chatting. That's it.
FAQ
Questions? We've got answers.
Your conversations never leave your browser unencrypted. Murmur processes only the snippets it annotates, doesn't store full chats, doesn't train models on them, and doesn't share them with third parties. Saved phrases are stored in your own account and you can delete them any time.
Murmur uses spaced repetition and your proficiency level to pick phrases that are just challenging enough. It tracks what you've seen and prioritizes new vocabulary that appears naturally in your conversations, so you learn what's actually relevant to you.
Yes — Murmur activates on any conversation in ChatGPT or Claude the moment you install it. There's nothing to configure. Just chat as you normally would, and annotations will start appearing inline.
No. Murmur runs entirely as a browser extension and never modifies your prompts or the AI's responses. It reads the output after it's rendered and adds annotations below — your conversation stays exactly the same.