Compare / Speech to text
Speech-to-text: PyAI Hear vs Deepgram and AssemblyAI
Compare recorded and live transcription separately
PyAI Hear supports an OpenAI-compatible recorded-audio request and a native streaming protocol. Deepgram and AssemblyAI offer their own recorded and streaming products. Compare language support, audio formats, final events and error handling on the exact path you plan to use.
Deepgram listed Nova-3 monolingual pay-as-you-go prerecorded at $0.0043/min and streaming at $0.0048/min when checked October 28, 2026. Plans and promotions can change. PyAI synchronous recorded requests have a one-minute minimum per non-empty request; consult the rate card for each endpoint.
Before you choose
Good questions. Clear answers.
What should I compare in a speech-to-text API?
Use the same recordings to compare accuracy, language coverage, final results, streaming partials and billed duration. Pay particular attention to names, numbers and the terms your workflow needs.
Is Hear compatible with an OpenAI transcription client?
Hear supports an OpenAI-compatible recorded-audio request. Live transcription uses the native Hear streaming protocol; test formats, language coverage and final events before migrating.
Try your own audio.
Evaluate the transcription path with a representative recording.