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AssemblyAIDeepgram
| Attribute | AssemblyAI AssemblyAI | Deepgram Deepgram |
|---|---|---|
| Segment | Audio | Audio |
| Version | Universal-3.6 Pro Realtime | Nova-3 |
| Entry cost | Free tier · from $0.15/1M tok | Free tier · from $4,000/min |
| Pricing tiers | Free Credits free · Universal-2 Async STT $0.15 · Universal-Streaming English / Multilingual $0.15 · Universal-3.5 Pro Async STT $0.21 · Universal-3.6 Pro Realtime STT $0.45 · Text-to-Speech (AssemblyAI-TTS-1) $15 | Free free · Growth $4000 |
| Model stack | AssemblyAI-TTS-1 · Claude · Claude 4.6 Sonnet · Claude 4.8 Opus · Gemini 2.5 Pro · Gemini 3.5 Flash · GPT-5.5 · Qwen3 Next 80B A3B · u3-rt-pro · Universal-2 · universal-3-6-pro · universal-3-pro · Universal-3.5 Pro · Universal-3.5 Pro Realtime · Universal-3.6 Pro Realtime · Universal-Streaming English · Universal-Streaming Multilingual | Aura-1 · Aura-2 · Flux · Flux English · Flux Multilingual · Flux STT · Flux TTS · flux-general-en · flux-general-multi · Nova-3 · Nova-3 Medical · Nova-3 Monolingual · Nova-3 Multilingual · Nova-3 Pharma · phoneLLM mini · Think-Fast · Whisper · Whisper Cloud · Whisper Large |
| Context window | n/a | n/a |
| Public API | ||
| Routes models | ||
| Changes / 30d | 8 | 11 |
| Origin | Global | Global |
| Capabilities | Speaker diarization, Summarisation, Topic detection, PII redaction, LeMUR framework, Pre-recorded STT, Real-time STT, Voice Agent API | Real-time streaming, Keyterm prompting, Multilingual, Voice agent API, Text to speech, Speech-to-Text, Text-to-Speech, Voice Agent API |