Higgs Audio V2
Expressive open text-to-audio — emotion, multi-speaker dialogue, and voice cloning in one model.
About
Higgs Audio V2 is Boson AI's text-to-audio foundation model from 2025, built for expressive speech rather than flat narration. The 3B model handles emotion and prosody, multi-speaker conversations with distinct voices, and zero-shot voice cloning, trained on a reported 10 million hours of audio. Boson reports a 75.71% win rate on the EmergentTTS-Eval emotions benchmark. The weights are public, but production or revenue-generating use requires a separate commercial license — it is not open for commercial deployment by default.
Specs
Context window
Pricing
Free quota
API access
Weights
Released
Benchmarks
Boson-reported: 75.71% win-rate on EmergentTTS-Eval emotions; best-in-class multi-speaker quality (vendor claim).
Provider-reported unless a source says otherwise. Benchmarks are marketing-adjacent by nature — treat them as directional.
Use cases
Trust score — 6/10
Scored 6/10 (metrics tier, metrics-v1). Evidence: Released 2025 by Boson AI; v2.5 and v3 followed; Weights public but commercial production needs separate license; 75.71% EmergentTTS-Eval emotions win-rate is team-reported. License: Public weights; production/hosted/revenue-generating use requires a separate commercial license per Boson AI..
How the trust score is built
Full methodology →- Adoption · stars/downloads, log-scaled vs peers
- 6.0/10
- Maintenance · recency, releases, issue load
- 7.0/10
- Openness · license + docs
- 5.0/10
- Manual review · sanity read + red-flag check
- 6.0/10
- · Released 2025 by Boson AI; v2.5 and v3 followed
- · Weights public but commercial production needs separate license
- · 75.71% EmergentTTS-Eval emotions win-rate is team-reported