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Top Voice AI companies are building with Assembly.
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Latest Release
Voice Agent API
Voice agents that get it right, respond instantly, and ship the same day with our new Voice Agent API
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Process millions of call recordings with industry-leading accuracy to generate operational insights your team can act on.
2x
increase in free-to-paid conversion rate
“We needed a provider that could scale with us — offering unlimited concurrent streams, fair pricing, and responsive support.”
36%
improvement in close rate
“Assembly has saved us countless hours managing models, and provided exceptional accuracy.”
2x
increase in free-to-paid conversion rate
“We needed a provider that could scale with us — offering unlimited concurrent streams, fair pricing, and responsive support.”
36%
improvement in close rate
“Assembly has saved us countless hours managing models, and provided exceptional accuracy.”
Extract deal signals, coaching opportunities, and revenue insights from every sales conversation.
Capture the moments that close deals with 94.1% word accuracy
Detect competitor mentions and objections automatically
Transcribe pricing and entity details across every conversation
Separate rep and prospect speech for talk ratio analysis
Measure engagement signals and score call effectiveness
Identify discovery quality metrics across every conversation
Track sentiment shifts across sales conversations
Detect buying signals and budget concerns by topic
Extract deal signals automatically from every call
Accuracy that captures the objections, competitor mentions, and buying signals your revenue team needs.
Sub-300ms real-time accuracy for live sales coaching, real-time deal signal detection, and in-call competitive intelligence alerts.
Highest-accuracy batch transcription for sales call recording analysis, deal scoring, win/loss analysis, and large-scale rep performance benchmarking.
The crucial details captured more accurately than ever — powering reliable downstream workflows.
| AssemblyAI Universal-3 Pro | Speechmatics Enhanced Model | Deepgram Nova-3 | AWS Transcribe | OpenAI GPT-4o Transcribe | |
|---|---|---|---|---|---|
| MER | 7.5% | 17.33% | 18.69% | 20.76% | 12.29% |
| WER | 4.5% | 6.1% | 6.66% | 12.9% | 5.34% |
Put our Voice AI models to the test in our no-code playground.
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