Conversational Intelligence

Power best-in-class Conversation Intelligence with leading Voice AI

Deliver unmatched insights, streamlined workflows, and faster time to market — all with unrivaled speech-to-text accuracy, comprehensive speech understanding, and enterprise-grade reliability.

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increase in free-to-paid conversion rate

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“We needed a provider that could scale with us — offering unlimited concurrent streams, fair pricing, and responsive support.”

80%

increase in customer satisfaction

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“Assembly has saved us countless hours managing models, and provided exceptional accuracy.”

increase in free-to-paid conversion rate

See case study

“We needed a provider that could scale with us — offering unlimited concurrent streams, fair pricing, and responsive support.”

80%

increase in customer satisfaction

See case study

“Assembly has saved us countless hours managing models, and provided exceptional accuracy.”

Capabilities

Built for every conversation intelligence workflow

Put every word to work and maximize actionable learnings across all conversations.

Speaker diarization for attribution and coaching

Accurately separate speakers to track talk ratios

Attribute sentiment to the right speaker

Identify objection patterns and score agent performance

Scale to millions of conversations

Scale with unlimited concurrency and zero rate limits

Handle millions of hours of audio with autoscaling

Maintain 99.9% uptime with consistent low latency at scale

Price-performance and scalability that grows with you

Pay as you go with no minimum commitment

Unlock volume discounts as you scale

Count on 99.9% uptime SLA at a fraction of legacy pricing

Platform

One API, every conversation intelligence workflow

Accuracy that captures every nuance, from sales objections to customer sentiment shifts.

Streaming Speech to Text API

Sub-300ms real-time accuracy for live agent coaching, compliance monitoring, and next-best-action recommendations during active calls.

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Speech-to-Text API

Highest-accuracy batch transcription for post-call review, QA scoring, and agent coaching workflows.

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Benchmarks

Lowest error rate in the industry

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%

Playground

We're not playing around, but you can

Put our Voice AI models to the test in our no-code playground.

Try it now