Chatterbox (Resemble AI)
Leading#6 in Open sourcehigh confidence
Resemble AI's open TTS (~25.7k GitHub★) — a top 2026 pick for expressive, production-grade local speech with emotion control.Our read
Why it ranks #6
A breakout open TTS project at roughly 26k GitHub stars and a recurring 2026 recommendation for expressive local speech, backed by an established commercial voice vendor.Here is the catch
newer project with less long-term operational evidence
GPU inference and model downloads are substantial
watermarking and model-license constraints may affect some workflows
Does this well
expressive output with direct emotion controls
production-oriented project from an experienced voice vendor
good cloning quality from short references
Pricing
Checked by hand on 2026-07-23. Prices in this category change often — if this looks wrong, it probably is.
Key features
zero-shot text-to-speechemotion and exaggeration controlsmultilingual generationvoice conversion
Quick facts
More in this area
The rest of the Open source column.- 1Coqui TTS (XTTS)The gold-standard open-source TTS / voice-cloning toolkit (~45.8k GitHub★) — XTTS v2 clones a voice from a 3-second clip across many languages.
- 2Bark (Suno)Suno's transformer TTS (~39.2k GitHub★) — highly expressive speech plus non-speech sounds (laughter, sighs, music). A recognized open leader.
- 3OpenVoice (MyShell)MyShell's instant voice cloning (~37k GitHub★) — strong tone/emotion control and low-latency inference. Widely adopted open cloner.
- 4RVC (Retrieval-based Voice Conversion)The de-facto open voice-conversion tool (~36.6k GitHub★) — best balance of quality, speed and ease for real-time voice changing/cloning.
- 5Fish Speech (fishaudio)Fast, high-quality multilingual TTS / cloning (~31.4k GitHub★) — a newer entry gaining strong traction for its speed-quality balance.
- 7F5-TTSA fast diffusion-transformer TTS with strong zero-shot cloning (~15k GitHub★) — notable and actively used, below the top repos on adoption.