Flux TTS is Generally Available
By Steven Van ·
Flux TTS, Deepgram's conversation-native text-to-speech model, is now generally available on /v2/speak — streaming WebSocket and batch REST.
Deepgram announced Flux TTS is Generally Available on August 12, 2026.
What changed
Flux TTS, Deepgram's conversation-native text-to-speech model, is now generally available on /v2/speak — streaming WebSocket and batch REST. New at GA: Barge-in with exact spoken-text reporting.Interrupt cancels the active turn on the live socket, and SpeechInterrupted reports text_spoken and text_remaining — an exact answer to "what did the user actually hear," so your LLM context stays correct without reconstructing it from playback timing. See Interruption Handling. Mid-session speed changes.Configure adjusts speed without reconnecting, answered by ConfigureSuccess / ConfigureFailure. speed on both transports. One of 0.85–1.15 in 0.05 increments. An expanded voice catalog. 36 English voices across American, British, Irish, Australian, Indian, Singaporean, and Filipino accents, led by 12 featured all-rounders. See Voices & Languages. Also new alongside GA, but still in beta: an expressivity parameter that shifts a voice's delivery register from -2 (calm) to 2 (animated) on both transports. The tuned default (0) remains the recommended, production-validated setting. See Expressivity. Coming soon as fast follows: inline pause and pronunciation controls in Speak text — the controls_