AssemblyAI

What AssemblyAI is

AssemblyAI is a Speech AI platform for developers and product teams. Its core is pre-recorded and streaming speech-to-text, with speaker separation, keyword prompting, speech understanding, guardrails and an LLM gateway, aimed at meeting notes, contact centre analytics, voice agents and speech data products.

It provides documentation, an API reference, a playground and a status page.

What you can do with it

• Transcribe recordings in bulk through an API
• Add streaming transcription to a live assistant
• Extract summaries, topics and risk signals from calls
• Validate model behaviour before integrating

Who it is for

• Engineering teams building speech features
• Contact centre product teams
• Companies processing audio at scale

What to watch out for

• This is infrastructure: you need API integration, key management and error handling
• Medical, customer service and employee audio carries consent, retention and privacy obligations
• Call recording laws vary by region; check consent rules where your users are
• Costs scale with audio volume, so model and feature choices matter