BreezeBlue releases Breeze TTS 2, the new top open-weights text-to-speech model
Partly confirmed
The takeaway
On 2026-08-25 BreezeBlue published weights and inference code for Breeze TTS 2, a 3B text-to-speech model with voice cloning, voice design and voice direction and under-40 ms time-to-first-audio on an H100.
Status
- Claim
Partly confirmed
- Our reporting
- Medium confidence
- Importance
- 3 of 5
- Last verified
- 29 September 2026
Your AI and this story
- GPT-6 Astra117 days after its cutoff
- Claude Opus 5.556 days after its cutoff
- Gemini 4 Hydrogen147 days after its cutoff
- Grok 4.786 days after its cutoff
None of these four assistants can know about it. The closest, Claude Opus 5.5, stops 56 days before it.
Key facts
- 3B params; cloning, text-described voice design, voice direction, vocal events in one checkpoint
- TTFA <40 ms on H100 (fast path), streaming RTF 0.32; needs 12-24 GB VRAM
- Artificial Analysis: #1 open weights, ~#6 overall at launch; open-weights top 5 in late Sept 2026: Breeze TTS 2, Fish Audio S2 Pro, Step Audio EditX, Voxtral TTS, Kokoro 82M
- Weights: BreezeBlue Research and Non-Commercial License; code Apache-2.0; commercial use via breezeblue.ai subscription
- Model card lists English + Chinese; AA post cites 50 languages (unresolved)
What happened
BreezeBlue, a lab little known before this release, opened the weights of Breeze TTS 2 on Hugging Face and GitHub. A single 3B checkpoint does zero-shot cloning, voice design from a prompt, emotional/tonal direction, and real-time bilingual streaming.
Why it matters
It pushed the open-weights ceiling in TTS about 90 Elo higher, narrowing the gap to closed leaders (Eleven v4, Cartesia Sonic-3.6). “Open” here is weights-available but non-commercial, like Fish Audio S2 Pro and Higgs TTS 3. For commercially free options, MIT/Apache models such as Chatterbox and Kokoro remain the choice. Confidence is medium: the organisation is new, and its language coverage is reported inconsistently.
Sources
4 sources from 4 sites. Numbers match the chips in the text.
4 sources: 3 primary, 1 reaction
Primary
- Hugging Face: BreezeBlue/Breeze-TTS-2huggingface.co, code
- GitHub: breezeblue-ai/breeze-ttsgithub.com, code
- Artificial Analysis open-weights TTS leaderboardartificialanalysis.ai, official
Reactions
- Artificial Analysis on X: Breeze TTS 2 leads open-weights TTSx.com, discussion
Changes
- Filed