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Set via transcription_engine and model query parameters.

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Engines

EngineDefault modelOther modelsNotes
Deepgramnova-3nova-2, fluxDefault engine. Broadest format support.
Telnyxopenai/whisper-tiny—On-network, lightweight
Googlelatest_long—Multilingual, long-form
Azureazure/fast—Broad language/accent coverage

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Flux Model

Deepgram’s lowest-latency model with built-in end-of-turn detection. Designed for real-time voice agents. See Audio Formats for supported formats.