AssemblyAI vs Deepgram
Side-by-side comparison of features, pricing, and ratings
AssemblyAI or Deepgram: which should you choose?
| Dimension | AssemblyAI | Deepgram |
|---|---|---|
| Pricing | From $0.15/hr | From $4,000/yr |
| Best for | Engineering teams building production voice agents that need turn detection and interruption handling, AI notetaker and AI scribe teams needing batch plus realtime transcription under one key | Engineering teams building real-time voice agents who want STT, TTS and LLM orchestration behind one endpoint, Contact centres needing live transcription with redaction and diarization as forecastable line items |
| Standout features | Pre-recorded Speech-to-Text API with native code-switching and speaker labels · Realtime Speech-to-Text over WebSocket with streaming partial transcripts · Sync Speech-to-Text API returning a finished transcript in one request-response call | Conversation-aware streaming STT with end-of-turn detection and barge-in (Flux STT) · Flux TTS conversation-native speech over batch POST /v2/speak and WebSocket streaming · Unified Voice Agent API combining STT, managed LLM and TTS in one WebSocket call |
| Viability score | 95/100 | 95/100 |
| API | Yes | Yes |
AssemblyAI is the stronger pick for engineering teams building production voice agents that need turn detection and interruption handling; Deepgram fits better for engineering teams building real-time voice agents who want stt, tts and llm orchestration behind one endpoint.
Built from live tool data, last verified 2026-11-06.
AssemblyAI speech-to-text API: batch, realtime streaming, and voice agent builds behind one key.
Visit WebsiteDeepgram pairs real-time speech-to-text, text-to-speech and a Voice Agent API for live voice AI you can bill per second.
Visit WebsiteFrequently Asked Questions
Which is better, AssemblyAI or Deepgram?
The best choice between AssemblyAI and Deepgram depends on your specific use case — we compare them independently on features, current pricing, integrations, and real-world signals (with an on-demand sentiment scan available for each). See the side-by-side breakdown above to match them to your needs.
What are the main differences between AssemblyAI and Deepgram?
The key differences include pricing model, feature set, platform support, and skill level requirements. Review the full comparison on RightAIChoice for a detailed breakdown.
Is there a free version of AssemblyAI or Deepgram?
Check the pricing section in the comparison for the latest pricing details on both tools, including free tiers, trial options, and paid plans.
What else are AssemblyAI and Deepgram compared with?
If you need lifelike voice generation for content or voice agents, ElevenLabs is the pick — it excels at TTS, dubbing, and audio creation. If your core need is accurate speech-to-text and building voi
If you need private, offline dictation with local AI and maximum control over your data, OpenWhispr is the clear choice. If you're building voice agents, real-time transcription APIs, or speech unders
If you're a non-technical user who just needs a mobile recorder that transcribes on the go, Voice Recorder & Notes Pro's free tier and simplicity win. For developers or teams building custom voice app
Choose Najva if you're a solo macOS user needing free, offline dictation and privacy. Choose AssemblyAI if you're a developer building scalable voice applications requiring real-time streaming, 99-lan
Where can you read more about AssemblyAI and Deepgram?
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Analysis generated by our model pipeline from live data: