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AssemblyAI vs Deepgram comparison

Compare AssemblyAI and Deepgram in Audio item by item — price, plans, specs, Korean support, and commercial-use availability. In the table below, use Show differences only to filter to just the differing rows.

High-accuracy STT API for developers

A developer Voice AI platform for pre-recorded and realtime speech recognition, diarization, keyterm prompting, summarization, and voice agent APIs.

Edge vs. similar tools: It goes beyond transcription by packaging natural-language prompting, keyterm boosts, medical mode, and voice agent APIs in one platform.

Realtime voice AI API platform

A developer speech AI API platform for realtime STT, TTS, and voice agents through Nova, Flux, Aura, and the Voice Agent API.

Edge vs. similar tools: It focuses on realtime voice-agent infrastructure, including turn detection and interruption handling, beyond STT and TTS.

Item-by-item comparison

AssemblyAI86

Pricing

Free plan
No
Plans
3

Specs

Languages
99
Real-time
Supported

Cross-cutting

Korean
Supported
API
Yes
Commercial use
Allowed
Deepgram83

Pricing

Free plan
No
Plans
3

Specs

Languages
50
Real-time
Supported

Cross-cutting

Korean
Supported
API
Yes
Commercial use
Allowed

AssemblyAI vs Deepgram: which should you choose?

  • AssemblyAI has the higher popularity score (AssemblyAI 86 vs Deepgram 83), so it has stronger public awareness signals in this category.

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