THE FOUNDERS OF @ELEVENLABS HAVE TO BE SWEATING RIGHT NOW
For years, they absolutely dominated TTS because no open-source options could actually sound human.
That era is officially over.
@FishAudio just dropped their S2.1 Pro model, stepping up as one of the rare voice AI companies offering open-weight models.
Devs now get now natural-language control over emotion, pacing, and delivery, alongside serious real-time performance:
The specs speak for themselves:
→ 2x faster than Cartesia
→ 1/6th the cost of ElevenLabs
→ 56.3 chars/s throughput, ahead of GPT-Realtime-2
→ Native support for 83+ languages
→ Around 90ms latency for natural conversations
Need to keep everything in-house? S2.1 Pro also supports on-prem deployment with zero data retention.
If you're building production-grade voice agents, this is THE most interesting open-source releases to test right now 👀