AssemblyAI
AssemblyAI
Best for: API & Platform for people who want a checked, free option.
AssemblyAI provides transcription (async and realtime), speech understanding (summaries, sentiment, PII redaction), and text-to-speech through one API — plus an LLM Gateway exposing 25+ models.
Sign-up includes $50 in free credits with no credit card required; the free tier caps new streams at 5 per minute. Pricing is per-hour afterwards: Universal-3.5 Pro async transcription at $0.21/hour, Universal-2 at $0.15/hour, realtime from $0.15–0.45/hour, TTS $15 per million characters.
It fits developers who need accurate, production-ready transcription with higher-level audio analysis, and teams comparing providers before committing spend.
To begin, create an account at assemblyai.com and copy the API key; US and EU endpoints are available.
The honest limits. Rate limits on free are tight (5 streams/minute), and advanced add-ons (e.g. Medical Mode) cost extra. Not used first-hand; confirm at assemblyai.com/pricing.
Pros and cons
What's good
- Offers a free trial before you commit.
- An API & Platform option from AssemblyAI.
Worth knowing
- Free access is time-limited.
- Check the provider's current pricing and limits before you rely on it.
How to get started
- 1Open AssemblyAI's site with the Get Access button on this page.
- 2Create an account if prompted, then start with the free option.
- 3Come back for other checked tools if it is not the right fit.
FAQ
Is AssemblyAI free?
AssemblyAI is free trial — you can start using it at no cost. See the provider for current limits and any paid upgrades.
Who makes AssemblyAI?
AssemblyAI is provided by AssemblyAI.
What is AssemblyAI used for?
Speech-to-text and audio-intelligence APIs with $50 in free credits — no card required, five streams per minute on the free tier.
Share this listing
Made this tool, or just rate it? Embed the badge on your site, README, or landing page — it links straight to this hand-checked listing.
