Chatterbox measured on 3 of 3 Text to speech benchmarks3
BenchmarkByScoreRank
Multimodal1
Other2
No benchmark matches
$25per 1M characters
1,024arena Elo
May 2025released
en, es, fr +19Languages
YesVoice cloning
Exact native tariff; see source for billing scope.Price covers
Ranking?
Full ranking →···
77Polly Long-Form1,02978Chatterbox1,02479Lightning v3.11,022Strong at
Alternatives?
ModelScoreCostPriceWhat changes
CheaperQwen Audio 3.1 TTS Pluswins 83%-23%$19.30Languages: loses es, ru, ar +11KBetterKokoro 82M v1.0Openwins 56%-96%$0.99Languages: loses es, fr, de +18+1
OpenFish Audio Drama 3 Previewwins 78%-40%$15CheaperQwen Audio 3.0 TTS Pluswins 80%-23%$19.30Languages: loses es, fr, de +17SCheaperSimba 3.2wins 78%-74%$6.60Languages: loses es, fr, de +18ModelScoreCostPriceWhat changes
Qwen Audio 3.1 TTS Pluswins 83%-23%$19.30Languages: loses es, ru, ar +11Qwen Audio 3.0 TTS Pluswins 80%-23%$19.30Languages: loses es, fr, de +17Fish Audio Drama 3 PreviewOpenwins 78%-40%$15SSimba 3.2wins 78%-74%$6.60Languages: loses es, fr, de +18
Voxtral 3 TTSwins 75%-48%$13ModelScoreCostPriceWhat changes
KKokoro 82M v1.0Openwins 56%-96%$0.99Languages: loses es, fr, de +18+1SSimba 3.2wins 78%-74%$6.60Languages: loses es, fr, de +18SSimba 3.0wins 64%-74%$6.60Languages: not verified+1
Gemini 2.5 Flash Lite TTSwins 59%-63%$9.20Languages: not verified+1Gemini 2.5 Flash TTS (Dec 2025)wins 55%-63%$9.20Languages: not verified+1ModelScoreCostPriceWhat changes
Fish Audio Drama 3 PreviewOpenwins 78%-40%$15BBreeze TTS 2Openwins 76%+36%$34Languages: loses es, fr, de +17+1AMing 3.0 TTSOpenwins 72%——Languages: loses pt, it, ru +12Fish Audio S2 ProOpenwins 63%-40%$15Voice cloning: not verified
Step Audio EditX (Mar 2026)Openwins 61%——Languages: not verified+1ModelScoreCostPriceWhat changes
RChatterbox HDwins 62%+60%$40Languages: not verified+1All Resemble AI models →Run it yourself
Fits onhardware needs not verified yet
LicenceMITfree for commercial use
Benchmarks
in Speech & VoiceAA TTS controlled voice931#40
AA TTS provider voice1,024#78
TTS Arena (v2)1,476#11
FAQ
How much does Chatterbox cost?›
$25 per 1M characters.
Is Chatterbox free to use?›
There is no free API; it costs $25 per 1M characters. The weights are open, so you can run it yourself.
How good is Chatterbox, and what is it best at?›
#77 of 96 in Text to speech.
Is Chatterbox better than Polly Long-Form?›
On AA TTS provider voice, Chatterbox scores 1,024 vs 1,029 — about the same. It is 75% cheaper.
When was Chatterbox released? Is there a newer version?›
Released 2025-05-28. It is the current version in its line.
Is Chatterbox open source?›
Yes, the weights are open (MIT licence).
Can I run Chatterbox locally?›
The weights are open and can be self-hosted; hardware needs are not confirmed yet.
What is Chatterbox?›
Chatterbox is an open-weights speech & voice model from Resemble AI, released May 2025.
What are the best alternatives to Chatterbox?›
Qwen Audio 3.1 TTS Plus (cheaper), Kokoro 82M v1.0 (better), Fish Audio Drama 3 Preview (open weights).