Build the Future of Conversation Intelligence — Faster

AssemblyAI makes it simple to build Conversation Intelligence products quickly. Our speech-to-text API delivers high accuracy, reliable speaker diarization, and flexible pricing—so your team can focus on shipping features instead of fixing transcripts.

Everything You Need to Build a Best-in-Class Product

Deliver powerful conversation intelligence solutions with industry-leading accuracy and reliability. AssemblyAI offers advanced speech AI models that help companies ship faster, scale reliably, and build truly differentiated products.

  • Accurate transcripts you can trust
  • Best-in-class speaker diarization
  • Flexible, cost-effective pricing
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More Accurate Transcripts  — Fewer Customer Complaints

AssemblyAI outperforms other providers in noisy, multi-speaker environments like phone calls and meetings. Independent benchmarks show up to 30% reduction in hallucination rates compared to Whisper Speech-to-Text on real-world audio.
The industry’s highest Word Accuracy Rate
OpenAI
Whisper Large-v3
Microsoft
Azure Batch v3.1
Google
Latest-long
AssemblyAI
Universal-2
91.7%
91.2%
90.8%
93.3%

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