Fish Audio Launches Live 3 Full-Duplex Voice Model: Listens While Speaking, Backchannels "Mm-hmm" and Knows When to Yield, Decides to Respond in as Little as 186 ms, Voice Agents at $0.035 per Minute
On November 10 (02:02 on November 11 Singapore time) Fish Audio released Live 3, a full-duplex voice model that keeps listening while it speaks. It can acknowledge with short cues such as "mm-hmm" or "okay" while leaving the floor to the user, tell a backchannel apart from a real interruption, and wait while a caller corrects themselves. Fish Audio says these behaviors were learned from real human conversations rather than hand-written rules and thresholds, and that Live 3 can decide to respond in as little as 186 milliseconds. Live 3 speaks English only for now, is available on the Fish Agent Platform and via API, and can be deployed on-premises by enterprises; voice agents are priced at a limited-time $0.035 per minute (list $0.07, offer ends December 31, 2026). No standardized benchmark has been published.
Key Takeaways
- Full duplex: Live 3 keeps listening while it speaks, moving turn-taking into the speech model itself instead of rules in an ASR, LLM and TTS pipeline
- Latency (vendor figure): decides to respond in as little as 186 ms, using short replies like "mm-hmm" or "okay" while the full answer is prepared
- Pricing: voice agents at $0.035/min (list $0.07, 50% off until 2026-12-31), with speech recognition, LLM and voice billed together; phone calls add $0.01/min and sign-up includes $5 credit
- Limits: English only for now; no standardized benchmark published, only 3 excerpts from real test calls
- Deployment: Fish Agent Platform, API, or enterprise on-premises, supporting both full-duplex and cascaded modes




