Industry-leading AI models to transcribe and understand speech with unmatched accuracy and scalability.
AssemblyAI offers state-of-the-art speech-to-text and speech understanding AI models designed for developers to build, ship, and scale voice AI applications with high accuracy, multilingual support, and advanced features like speaker diarization and contextual prompting.
Industry-leading speech-to-text model with the lowest word error rate, advanced contextual prompting, and support for multiple languages including English, Spanish, French, German, Italian, and Portuguese.
Real-time transcription with ultra-low latency, precise end-of-turn detection, and high accuracy optimized for voice agents and live audio streams.
Detects multiple speakers in audio, segments utterances, and labels speakers by name or role to enhance conversational analysis.
Supports over 99 languages with automatic detection and natural preservation of code-switching between languages in transcripts.
Includes features like sentiment analysis, entity detection, translation, custom formatting, and tagging of non-speech audio events for deeper insights.
Allows users to control transcription behavior with plain language instructions and improve accuracy by providing domain-specific words and phrases.
Automatically formats dates, numbers, and punctuation according to regional and language standards, supporting diverse global user bases.
Easy to integrate API with no contracts or throttles, supporting millions of inference calls monthly and flexible pay-as-you-go pricing.
Create an account on AssemblyAI and obtain API keys to start integrating speech-to-text services.
Send prerecorded audio files or live audio streams to the API for transcription processing.
Use advanced features like speaker diarization, keyterms prompting, and custom formatting to tailor output.
Retrieve transcription results with timestamps, speaker labels, and audio intelligence insights via API.
Use the transcribed and analyzed data to power voice apps, conversational AI, or analytics workflows.
Pricing details are gathered from the official AssemblyAI website and are provided for reference only. Always confirm the latest information directly with the vendor.
| Plan | Price | Highlights |
|---|---|---|
| Free Plan | Free | Up to 185 hours of prerecorded audio transcription
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| Pay As You Go | Starting at $0.15/hr | Unlimited access to all models including Speech Understanding and LLM Gateway
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| Enterprise Plan | Contact Sales | Tiered pricing for high-volume usage
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