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AssemblyAI

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AssemblyAI transcribes and understands audio using state-of-the-art AI models, revolutionizing speech-to-text and natural language processing.

About AssemblyAI

AssemblyAI offers a suite of APIs for transcribing and analyzing audio content. Its platform includes pre-recorded and real-time speech-to-text, dictation, and voice agent APIs, as well as tools for extracting speaker identity, sentiment, and summaries from audio. The service supports 99 languages and is designed for integration into products that require voice capabilities. AssemblyAI is aimed at developers and businesses needing scalable, production-ready voice AI infrastructure. Pricing follows a pay-as-you-go model with a free tier to start, and there are no required commitments.

Best for: developers, SaaS platforms, call analytics providers, medical transcription services, AI notetaker apps

Key features

  • Provides APIs for pre-recorded and real-time speech-to-text conversion
  • Supports extraction of speaker identity, sentiment, chapters, and summaries
  • Offers dictation API that cleans up filler words and self-corrections
  • Includes guardrails for redacting PII and moderating content in audio and transcripts
  • Supports 99 languages including English, Spanish, French, and more
  • Provides a voice agent API for building production-ready voice agents

Use cases

  • Integrating speech-to-text into SaaS products
  • Automating medical transcription workflows
  • Developing AI notetakers for meetings and calls
  • Analyzing call center conversations for insights

Pros

  • Free tier available with pay-as-you-go pricing
  • Vendor says there are no concurrency limits, throttles or forced commitments

Screenshots

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