AssemblyAI
$50 in free API credits for speech-to-text, streaming and LLM Gateway.
Card: noneAI Audio
What you get
$50 in free credits on signup for speech-to-text and other APIs.
How to get it
Sign up at assemblyai.com.
What it requires
No credit card required.
The catch
Credits are a one-time amount; free-tier streaming concurrency is 5 new streams per minute versus 100 on pay-as-you-go.
From the official page ยท checked 2026-10-14
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