AI Tool for Speech-to-Text

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AssemblyAI Overview

TL;DR: AssemblyAI provides AI powered speech-to-text and voice data solutions with features like speaker detection, sentiment analysis, and PII redaction.

AssemblyAI gets 8/10 because of its comprehensive features, high accuracy, and robust API as AI Transcriber.

AssemblyAI offers advanced AI models for transcribing and understanding speech. It includes features like accurate speech-to-text, speaker detection, sentiment analysis, and more. The platform is designed for developers and businesses looking to integrate powerful speech AI capabilities into their applications​.

Key Features of AssemblyAI

  • Accurate Speech-to-Text: Converts spoken language into text accurately.
  • Speaker Detection: Identifies and distinguishes between different speakers.
  • Sentiment Analysis: Determines emotional tone of speech.
  • Chapter Detection: Segments audio into chapters or sections.
  • PII Redaction: Redacts personally identifiable information from audio.
  • Multilingual Support: Supports multiple languages.
  • Real-Time Transcription: Provides real-time speech-to-text.
  • Customizable Models: Tailor AI models for specific needs.

How to Use AssemblyAI

  • Sign up at AssemblyAI.
  • Get API keys from your account.
  • Integrate the API into your application.
  • Use the provided documentation for guidance.
  • Start transcribing and analyzing speech data.

Key Use Cases for AssemblyAI

  • Transcription Services: Convert voice data from calls, meetings, and podcasts into text.
  • Customer Support: Automate call summaries, sentiment analysis, and agent performance monitoring.
  • Media Production: Generate transcripts, chapter markers, and highlights for videos and podcasts.
  • Compliance: Redact sensitive information (PII) from audio recordings.
  • Market Research: Analyze customer feedback, interviews, and focus groups for sentiment and key topics.

API available

AssemblyAI Pros and Cons

Pros Icon
  • High accuracy in speech-to-text conversion
  • Real-time transcription capability
  • Extensive feature set for diverse applications
  • Advanced Audio Intelligence for deeper insights
  • LeMUR integration for Large Language Models
Cons Icon
  • Can be complex for beginners to integrate
  • Requires understanding of API for effective use

AssemblyAI Pricing

Pricing Models:

✓ Pay as you go
✓ Quotation Based

AssemblyAI Pricing Details

AssemblyAI Alternatives

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AssemblyAI Specifications


  • SaaS

Customer Type

  • Freelancers
  • Medium Business
  • Small Business
  • Students & Researchers


  • Arabic
  • Chinese (Simplified)
  • Chinese (Traditional)
  • Dutch
  • English
  • French
  • German
  • Greek
  • Indonesian
  • Italian
  • Japanese
  • Korean
  • Portuguese
  • Russian
  • Spanish

AssemblyAI Support

AssemblyAI FAQs

AssemblyAI is a speech recognition tool offering transcription and audio intelligence services.

It transcribes conversations for meetings, calls, and live events in real-time with low latency and high accuracy.

LeMUR (Leveraging Large Language Models to Understand Recognized Speech) applies Large Language Models to voice data, enabling generation of summaries and insights.

Yes, it offers sentiment analysis as part of its Audio Intelligence feature set.

AssemblyAI uses enterprise-grade security practices and is SOC 2 Type 1 and Type 2 certified​

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