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Sentence by sentence

Private by design

The AI runs inside this browser tab. Your text is never sent to any server. Check your network tab: zero uploads.

Sentence-level

A transformer model (DistilBERT) scores each sentence as positive or negative, so you can rewrite the ones that land wrong.

Free, always Pro: emotions soon

Free forever. Fine-grained emotions, suggestions, and save-to-workspace are coming to BeginRooms Pro.

Part of BeginStudio. Powered by Transformers.js (Apache-2.0) and the DistilBERT-SST2 model (Apache-2.0). A guide, not a verdict: tone is subjective.

Quick answer: Paste text and it detects the sentiment and tone in your browser with an on-device model, so your writing stays private.
Last updated: July 2026 · Free · Runs entirely in your browser.

About the AI Tone Analyzer

Check the sentiment and tone of your writing before you hit send. An on-device model scores whether text reads as positive, negative or neutral, entirely in your browser, so your words stay private. Useful for emails, support replies and social posts.

Explore more: AI Writing Studio · Readability Score · BeginStudio AI tools · all free tools

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