Chatterbox TTS

by Resemble AI

Resemble AI's open-source emotion-aware TTS — community-licensed.

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TL;DR

Best for self-hosters wanting expressive TTS with emotion control under a permissive license. Pricing: free (MIT).

Category
Open source
License
MIT
Stars
★ 25.9k
Last push
2026-07-21
Pricing
free (MIT)
Platforms
Linux, macOS

What it is

Chatterbox is Resemble AI's open-source TTS contribution — MIT-licensed, designed for expressive emotional output. Voice cloning remains in the commercial Resemble product. Consent posture: synthetic-only in the open model.

Best for: Self-hosters wanting expressive TTS with emotion control under a permissive license.
Watch out for: English-focused; cloning gated to the commercial Resemble product.

Install / use

pip install chatterbox-tts

Features

Speaker diarizationNo
Word-level timestampsNo
Streaming / real-timeNo
Languages supported1
HIPAA eligibleNo

Links

GitHub repo ↗

Chatterbox TTS vs Whipscribe

FeatureChatterbox TTSWhipscribe
CategoryOpen sourceTranscription APIs
Pricingfree (MIT)$4–$24 one-time packs (credits never expire) · $2 single unlock · 60 min free on signup
Speaker diarization—Yes
Word timestamps—Yes
Streaming—No
Languages199
PlatformsLinux, macOSWeb, API, MCP

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