Universal-3.5 Pro

AssemblyAI universal-3-5-pro
Model Information
Slug universal-3-5-pro
LLMs.txt View
Release Date September 22, 2026 New
Organization
Model Description
Universal-3.5 Pro is AssemblyAI's speech-to-text model served through its Sync API, returning a complete transcript with word-level timestamps in a single synchronous response for audio clips up to 120 seconds. It accepts 16-bit WAV input and supports free-text prompting, keyterms, and conversation context to steer transcription toward domain vocabulary.
Available at 1 Provider
Provider Type Model Name Original Model Input ($/1M) Output ($/1M) Free Actions
OpenRouter
OpenRouter
Chat Code
Universal-3.5 Pro
assemblyai/universal-3-5-pro $62.50 $0.00