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Benchmarking Real-Time Voice AI APIs: Cartesia vs Deepgram vs ElevenLabs (2026)

This story is from 2026-09-03. It is preserved in the archive; the latest stories are on the live feed.

When building conversational agents or real-time voice applications, latency is the defining metric. If Time-to-First-Byte (TTFB) exceeds 200ms, natural turn-taking breaks down and conversational interruption becomes clunky. We recently recorded and aggregated median latency and pricing metrics acr…

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  1. 2026-09-03 19:32 · DEV Community — AI
    Benchmarking Real-Time Voice AI APIs: Cartesia vs Deepgram vs ElevenLabs (2026)

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