Head to head / AI Transcription

AssemblyAI vs Deepgram

The verdict
  • AssemblyAI is more accurate in our test: 96.9% vs 95.6% word accuracy.
  • Both offer a free tier to start.
ComparedAssemblyAIDeepgram
Accuracy (tested)96.9%95.6%
Starting price$0.15/hr
Free tierYesYes
Visit AssemblyAIVisit Deepgram

Feature by feature

FeatureAssemblyAIDeepgram
Languages99+30+
APIYesYes
Real-timeYesYes
Speaker labelsYesYes
Export formatsJSON, TXT, SRT, VTTJSON, TXT, SRT, VTT
Human optionNoNo

AssemblyAI

Developers who want a speech-to-text API with built-in audio intelligence like summarization, sentiment, and LLM queries.

  • +Universal-2 model, strong English accuracy
  • +LeMUR runs LLMs over your transcripts
  • +Sentiment, topics, PII redaction built in
  • +Generous free credit to start

Deepgram

Developers who need fast, low-cost speech-to-text at scale, in real-time or batch.

  • +Nova-3 model, very low streaming latency
  • +Among the cheapest per-minute pricing
  • +Self-hosted / on-prem deployment option
  • +High-throughput batch processing

Compared on the metrics we track for this category. Prices are the cheapest paid tier. Some links are affiliate links.