AssemblyAI's Universal-3.5 Pro Now on OpenRouter with 50% Launch Discount

Key Info

AssemblyAI's Universal-3.5 Pro speech-to-text model is now available on OpenRouter, with a 50% discount until September 29. It delivers high-accuracy transcription in 19 languages within a single synchronous call and ranks first across independent speech-to-text benchmarks.

Highlights

• 50% launch discount on Universal-3.5 Pro through September 29, 2026.
• Supports speech-to-text in 19 languages in one synchronous call.
• Accepts audio clips up to two minutes, returning full transcripts with word-level timestamps and confidence scores.
• Allows steering transcription with domain-specific keyterms and contextual prompting.