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.

Try our API for free Contact sales

Capturing speech is where it starts. Creating outcomes is where it counts.

Learn why today’s most innovative companies choose us.

Play video

90%

Reduction in customer complaints and support tickets

Play video

Conversion rate for their Conversational Intelligence product

15% improvement

Jiminny scored 15% higher customer win rates after implementing AssemblyAI.

Assembly is instrumental in our transcription process, providing crucial input for our LLM API to process further. It's become an integral part of our workflow.

Krish Ramineni, CEO and co-founder

Conversations worth having

Put every word to work, and maximize actionable learnings across all conversations—from customer support to sales calls to internal meetings and more.

Power your AI notetaker

Transform conversations into clear, accurate, and actionable notes.

Industry-leading speech-to-text accuracy delivers top quality meeting insights
Sentiment analysis and summarization ensures high-value meeting summaries
Label speakers by role, or name, to make sure action items are appropriately assigned

Elevate your call analytics

Process millions of hours of conversation at low latency to generate trends and insights at scale.

Automate quality monitoring with the most reliable speech-to-text in the industry
Provide real-time agent coaching with precise speech understanding models
Generate insights for improved service and new customer acquisition

Level up your sales intelligence

Provide vital sales learnings, close more deals, and drive revenue.

Identify success patterns and areas of opportunity with reliable insights powered by top accuracy
Sharpen pitch strategies with coaching tips based on real industry wins and patterns
Assess lead quality accurately based on smart content, sentiment, and engagement analysis

Accuracy where it matters most

Our Voice AI models deliver near-human accuracy even among noisy or challenging audio to capture the crucial details needed for smooth and seamless downstream processes.

The industry's highest Word Accuracy Rate
AssemblyAI Universal	Amazon Transcribe	Deepgram Nova-2	OpenAI Whisper Large-v3
94.1%	92.4%	92.1%	92.4%

Explore all benchmarks

AssemblyAI correctly transcribes Twilio while other providers incorrectly hear Polio

The most comprehensive intelligence suite

Turn every interaction into a powerful data set with advanced features that drive business-critical decisions and capabilities.

Speaker Diarization

Reliably detect multiple speakers and what they're saying with the highest accuracy in the industry.

Summarization

Turn hours of audio into concise, actionable insights with automatic summarization.

Sentiment Analysis

Capture speaker sentiment accurately for informed business decisions and problem solving.

Word Timings

Get granular timing data to sync conversation analysis and improve task automation.

Topic Detection

Spot trends and areas of importance by identifying key conversation topics.

PII Redaction

Safeguard sensitive information automatically to ensure privacy and compliance.

Modern tools for superior intelligence

Build expertly, scale effortlessly

Deep dive into the latest insights, trends, and industry breakthroughs for all things conversation intelligence.

Insights

2025 Insights Report: The State of Conversation Intelligence

Blog

Enterprise conversation intelligence: The power of superior Voice AI

Blog

Conversation Intelligence: The complete guide for 2025

Common questions

: AssemblyAI performs speaker diarization when speaker_labels=true. It segments audio using word timings, computes speaker embeddings for segments, and clusters similar embeddings to assign labels (e.g., "Speaker A," "Speaker B"). Accurate separation needs sufficient speech per voice—typically ~30 seconds—otherwise short interjections may be merged with the most similar speaker.
: Yes. AssemblyAI supports real-time conversation analysis through Streaming Speech-to-Text, transcribing audio streams synchronously with low latency and high accuracy. Use it for live coaching, agent assist, and instant QA during calls, with sub-second latency and precise end-of-turn controls for responsive experiences.
: Yes. AssemblyAI has documented integrations for Amazon Connect and Genesys Cloud, and supports Twilio for real-time and async call transcription. You can also connect via no-code tools or custom APIs, and request custom integration support.
: AssemblyAI safeguards sensitive data with strong encryption (AES-128/256 at rest, TLS 1.2+), audited certifications (SOC 2 Type 2, ISO 27001, PCI DSS), GDPR compliance, HIPAA support (BAA), and EU Data Residency. Governance includes vendor risk reviews and comprehensive data classification, retention, and deletion.
: AssemblyAI scales enterprise conversation processing with zero rate limits, uncapped concurrency, and autoscaling. It delivers low-latency pipelines that process millions of hours, backed by proven throughput: 600M+ inference calls/month and 40TB of audio daily. This supports reliable, large-scale contact center analytics without performance bottlenecks.
: Yes. Our Universal model supports 99 languages with automatic language detection and code-switching for mixed-language audio. Benchmarks show industry-leading word accuracy (e.g., English 93.4%, Spanish 94.7%, German 92.7%). Streaming also offers a multilingual model (English, Spanish, French, German, Italian, Portuguese). Performance varies by language pair; English+Spanish/German are optimal.