assemblyai

AssemblyAI is a speech-to-text and audio intelligence API that lets developers add transcription, speaker identification, content moderation, and audio summarization to their applications. It's a developer-first platform, not a consumer product — integration requires code.

Teams building meeting tools, podcast platforms, call center software, and voice-enabled applications use AssemblyAI to handle the complex work of accurate transcription at scale. Accuracy is competitive with other leading transcription providers, with strong performance on English and improving coverage of other languages.

The API supports real-time streaming transcription and asynchronous batch processing. Pricing is consumption-based, with a free tier for development and testing. Non-technical users looking for a simple transcription interface should look at consumer-facing tools built on top of APIs like this one.

Generate or transform audio and voice with AI