AssemblyAI
Transcription plus summarisation, topic detection and speaker labels for developers.
Full AssemblyAI record →Head to head
AssemblyAI vs Deepgram
AssemblyAI (AssemblyAI) and Deepgram (Deepgram) both sit in Audio. AssemblyAI is the cheaper entry point at Free tier with $50 free credits, then pay-as-you-go starting at $0.15/hr for pre-recorded STT (Universal-2). Deepgram shipped more tracked changes in the last 30 days (6 vs 5). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | AssemblyAI AssemblyAI | Deepgram Deepgram |
|---|---|---|
| Segment | Audio | Audio |
| Version | Universal-3.5 Pro | Nova-3 |
| Entry cost | Free tier with $50 free credits, then pay-as-you-go starting at $0.15/hr for pre-recorded STT (Universal-2) | Free tier · from $4,000/min |
| Pricing tiers | Free Credits free | Free free · Pay As You Go free · Growth $4000 · Enterprise free |
| Model stack | 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-pro · Universal-3.5 Pro · Universal-3.5 Pro Realtime · Universal-Streaming English · Universal-Streaming Multilingual | Aura-1 · Aura-2 · Flux · Flux English · Flux Multilingual · Flux TTS · Nova-3 · Nova-3 Monolingual · Nova-3 Multilingual · Whisper · Whisper Cloud · Whisper Large |
| Context window | n/a | n/a |
| Public API | ||
| Routes models | ||
| Changes / 30d | 5 | 6 |
| 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 |
Deepgram
Low-latency streaming transcription and voice agent infrastructure.
Full Deepgram record →