AssemblyAI
Speech-to-text APIs for recorded and streaming audio, with model-dependent speech-understanding options.
Pricing to verifyUniversal-3.5 Pro async: $0.21/hour
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Deepgram
Speech APIs for recorded transcription and real-time voice applications, with model-specific recognition and conversation features.
Pricing to verifyNova-3 monolingual recorded: $0.0043/min
Speechmatics
A speech recognition platform with batch and real-time APIs, multilingual transcription, and enterprise deployment options.
Paid plansUsage pricing; final applicable rate unconfirmed