What is
AssemblyAI
?
AssemblyAI provides breakthrough speech-to-text models that deliver unmatched accuracy for voice data applications. The platform offers Universal-Streaming capabilities purpose-built for voice agents with ultra-low latency and precise end-of-turn controls. Advanced speech understanding goes beyond transcription to provide sophisticated audio intelligence including speaker diarization emotion detection and content analysis. The developer-first API serves over 600M inference calls monthly with comprehensive SDKs and documentation.
Key Features
- Universal-Streaming speech-to-text
- Speaker diarization and identification
- Automatic language detection
- Real-time streaming transcription
- Audio intelligence and analysis
- Multilingual support (50+ languages)
- Custom vocabulary and formatting
- Sentiment analysis and topic detection
Pricing
- Free tier: 5 hours/month
- Pay-as-you-go: $0.00037/second
- Business plans: Custom pricing
- Enterprise: Volume discounts available
Pros:
- Industry-leading accuracy rates
- Ultra-low latency for real-time applications
- 30% less hallucinations than competitors
- Comprehensive developer documentation
- Scalable infrastructure (600M+ calls/month)
- Advanced audio intelligence features
Cons:
- Industry-leading accuracy rates
- Ultra-low latency for real-time applications
- 30% less hallucinations than competitors
- Comprehensive developer documentation
- Scalable infrastructure (600M+ calls/month)
- Advanced audio intelligence features
Who is it for?
- Software developers and engineers
- AI product teams
- Conversation intelligence companies
- Media and content creators
- Enterprise development teams
Best use cases
- Voice agent development
- Conversation intelligence platforms
- Meeting transcription and analysis
- Content creation and media processing
- Call center automation
API Integrations
https://www.assemblyai.com/docs
Security
https://www.assemblyai.com/security
Implementation
- API integration typically takes 1-2 weeks for basic implementation with advanced features requiring additional development time.
Best Alternatives
- https://deepgram.com
- https://cloud.google.com/speech-to-text
- https://aws.amazon.com/transcribe
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