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AssemblyAI

AI Audio - Transcriber

Date Listed: Apr 11, 2026

Multilingual Speech-to-Text API offering near-human accuracy and advanced transcription features for developers and enterprises.

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Overview

AssemblyAI provides a multilingual Speech-to-Text API designed for developers and businesses seeking highly accurate transcription services. It supports multiple languages including English, Spanish, German, French, Italian, and Portuguese, with features like language detection, formatting, filler word removal, keyterms prompting, custom spelling, and word-level timestamps. The platform offers scalable, production-ready AI models suitable for use cases such as conversation intelligence, medical transcription, contact centers, and voice agents.

Best for

Teams and professionals looking for highly accurate multilingual Speech-to-Text API

Key strengths

  • • transcriber
  • • multilingual support
  • • advanced transcription customization

Pricing

Starting price

USD 0.15

Model

PAID

Free plan / trial

No free plan · No trial

Pay-as-you-go pricing starting at $0.15 per hour for the Universal-2 model and $0.21 per hour for the Universal-3 Pro model. Additional add-ons like keyterms prompting are available at $0.05 per hour. Custom enterprise pricing and rate limits available upon contact.

Paid

Custom

Features & integrations

Features

  • • transcriber
  • • multilingual support
  • • advanced transcription customization
  • • multilingual transcription
  • • language detection
  • • filler word removal
  • • keyterms prompting
  • • custom spelling
  • • word-level timestamps

Platforms

web

Developer / API

API availability: No

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Alternatives & tradeoffs

Pros

  • + Useful for transcriber

Cons

  • − Paid access may be required for full features

Alternatives

  • • Abridge; Actual Chat; AI Audio Kit