TTFT Benchmark Ranks Fastest Voice Inference APIs

Time to first token (TTFT) misleads voice agent teams because text-to-speech needs a full clause before speaking. LiveKit's Gemma 4 deployment highlights time-to-first-sentence (TTFS) as the felt metric. Baseten's gpt-oss-120b leads at 0.23s TTFT, while Cerebras tops output at 1,697 tok/s.