Deepgram CLI 0.3.0: Flux TTS and Flux STT
By Steven Van ·
Deepgram CLI 0.3.0 is now available.
Deepgram CLI 0.3.0: Flux TTS and Flux STT, announced by Deepgram on August 19, 2026.
What changed
Deepgram CLI 0.3.0 is now available. It completes CLI support for Flux TTS, which reached general availability on 12 August, fixes Flux STT streaming, and enforces the CLI's exit-code contract. Upgrading from 0.2.26 picks up everything in this release. 0.2.27 was tagged but never published, so its changes arrive here. Full Flux TTS support on dg speak dg speak now defaults to flux-alexis-en on Speak v2 (WebSocket streaming) instead of Aura 2. Synthesised audio differs from earlier releases unless you request an Aura model explicitly: dg speak "Hello from Deepgram" -m aura-2-asteria-en -o hello.mp3 Two Flux-only controls are now available. Both are validated before the request and rejected for non-flux-* models. Option Values Notes --speed 0.85 to 1.15 in 0.05 steps 1.00 is nominal --expressivity -2 to 2 Beta. 0 is nominal; negative is flatter, positive more animated dg speak "So exciting!" --expressivity 2 --speed 1.05 -o lively.wav Any GA voice works with -m. For the full catalog see Voices & Languages; dg models lists Aura voices only. Flux streaming returns raw audio: linear16 by default, plus mulaw and alaw. The --container option and the wider --encoding set apply to Aura only