Hume AI Free Tier
$20 free credits for new accounts plus a monthly free API tier
What you get from Hume AI Free Tier for free
Overview
Hume AI builds voice-focused AI models: Octave text-to-speech, EVI (Empathic Voice Interface) speech-to-speech, and expression measurement APIs. Per its billing docs, every new account starts on the free tier with $20 in credits, and the pricing page lists a $0/month Free plan with recurring monthly allowances.
Free Tier Quotas & Limits
- TTS: 10,000 characters per month, approximately 10 minutes of generated audio
- EVI: 5 minutes of speech-to-speech usage per month
- Voice cloning: unlimited create and use, even on the free plan
- Rate limits: 15 requests per minute; 1 concurrent connection in the External LLMs section
- New-account credits: $20, per the billing docs
The pricing page does not show a free-tier allowance for the Expression Measurement API, voice conversion, or usage-based overage rates.
Key Free Models
The free tier covers the Octave TTS line (Octave 1 and Octave 2) and EVI 3 and EVI 4 mini for speech-to-speech. EVI connects to external LLMs within the concurrency limit above.
Billing Mechanics
The free plan costs $0/month with no card requirement stated. Paid tiers run Starter $3/month, Creator $7/month ($14 shown with a first-month 50% discount), Pro $70/month, Scale $200/month, and Business $500/month, with Enterprise custom. Once on paid usage, Hume charges extra usage each time a $44 usage threshold accrues. Plans are managed at app.hume.ai/billing.
How to Get Started
Create an account at app.hume.ai — new accounts land on the free tier automatically. Support is via Hume's Discord.
Models served free
Limits as the provider publishes them; a dash means none is published.
History
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Understand it
A few minutes of play-along, no sign-up.
- How does it turn text into a voice that sounds human? · Text-to-speech: phonemes, prosody and the waveform · 5 min
Compared in
More free API credits
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