Free AssemblyAI: Universal-3.5 Pro
AssemblyAI·stt·see pricing·
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....
Use via API
curl -X POST https://api.rewind.ai/v1/stt/ \
-H "Authorization: Bearer sk-rewind-..." \
-H "Content-Type: application/json" \
-d '{"model":"assemblyai/universal-3-5-pro","audio_url":"https://..."}'Common Questions
Free AssemblyAI: Universal-3.5 Pro on Rewind.ai is a free AI tool. There's no charge and no sign up needed to start.
Yes. You get 2,500 free tokens per day to use Free AssemblyAI: Universal-3.5 Pro and every other tool on Rewind.ai. A free account raises that to 5,000 tokens/day. Token packs start at $5.
Free AssemblyAI: Universal-3.5 Pro sends your request to an AI model and shows the result on the page. Some models run on our own GPUs, others through their providers.
No. You can use Free AssemblyAI: Universal-3.5 Pro right away without signing up. A free account doubles your daily usage to 5,000 tokens and saves your history.
Anonymous users get 2,500 tokens/day. Free accounts get 5,000 tokens/day. Tokens reset every 24 hours. Each generation costs ~100-5,000 tokens depending on the operation.
Your data is processed on our servers and isn't stored permanently unless you choose to save it. We don't sell or share it.
Yes. Content from Free AssemblyAI: Universal-3.5 Pro is yours to use for personal or commercial work. The AI models we run are commercially licensed.
Free AssemblyAI: Universal-3.5 Pro lets you start on free daily tokens and pay only when you need more, with token packs from $5 or a monthly plan.
This page runs AssemblyAI: Universal-3.5 Pro itself.
Yes. Free AssemblyAI: Universal-3.5 Pro works in any mobile browser, and the layout adapts to your screen size.
Sign up for a free account to get 5,000 tokens/day, double the anonymous limit. Or buy token packs starting at $5 for 200,000 tokens. See /pricing/ for all options.
Yes. After you generate content, you can download it, copy it, or share it via a unique link. Signed-in users can also view their generation history.