AssemblyAI

Developer API for speech-to-text and audio intelligence.

About AssemblyAI

AssemblyAI offers a developer-first API for transcription plus audio intelligence like summarization, sentiment analysis, and topic detection. It is built for teams embedding speech features into products. For a no-code alternative, see Descript, and browse more AI voice tools in the directory.

Key features

Speech-to-text API
Auto summarization
Sentiment analysis
Topic detection
Speaker diarization

AssemblyAI screenshots

AssemblyAI: pros & cons

Pros

Powerful audio intelligence extras
Developer-friendly docs
Good accuracy

Cons

Requires coding skills
Usage-based pricing needs monitoring

AssemblyAI FAQs

Is AssemblyAI free?

New accounts get free credits. Ongoing use is pay-as-you-go.

What is AssemblyAI used for?

Transcription plus summarization, sentiment, and topic detection in apps.

Does AssemblyAI identify speakers?

Yes. Speaker diarization labels who said what.