HeyGen
Free Credits
HeyGen Voice Turbo Free: Text-to-Speech API Free Until November 30, 2026
HeyGen Voice Turbo Free is the free edition of HeyGen Voice Turbo, HeyGen's fast text-to-speech model: it costs $0 through November 30, 2026, with no credit card and no credit balance required. Use model heygen-voice-1-turbo-free with a public voice or an instant voice clone through POST /v3/models/audio/tts, and you get back a 44.1 kHz WAV. HeyGen's blog says Turbo ranks first on the Artificial Analysis text-to-speech leaderboard (captured October 20, 2026). The catch is capacity: Turbo Free runs on shared, limited capacity with no uptime or latency guarantee, and a busy queue returns HTTP 429. Verified Nov 3, 2026 on HeyGen's official blog and developer docs.
What this offer actually gives you
HeyGen Voice is HeyGen's in-house voice model, the voice behind every HeyGen video. Turbo is its fast mode: the same voices with a shorter generation step, so audio comes back sooner and costs less to run. Turbo Free is that fast model at $0 until November 30, 2026 — HeyGen's official docs state it plainly: use "model": "heygen-voice-1-turbo-free" with a public or instant voice, and no credit balance is required. HeyGen also says it will notify users before this offer changes.
The free model is genuinely no-card, but it is not unlimited. Turbo Free is for tests, prototypes, and small amounts of speech. Each speech endpoint allows 30 requests per minute per workspace member by default, and all Turbo Free users share a limited amount of capacity, so you can receive HTTP 429 even below your request limit. A timeout or service failure can return HTTP 500 instead. Service availability, response time, and time to first audio are not guaranteed. One protection matters: a free request never switches to a paid model — to use paid Turbo you must send a new request with "model": "heygen-voice-1-turbo".
Voices are where the limits bite. Turbo Free works with HeyGen's public voices and with instant voices you clone from a single recording (the first 3 minutes are used, ready in seconds, free to create during the preview). Professional voice clones are not supported on Turbo Free — those need the paid heygen-voice-1 model and a purchased voice clone slot. The default model is heygen-voice-1, so if you forget the model string you will be charged paid rates instead of using the free model.
After the free window, paid Turbo is listed at $4 per million characters on HeyGen's blog price table (HeyGen Voice at $15 per million). That is the price to compare against if you build anything that must keep running past November 30: prototype on Turbo Free now, and budget the paid rate for December.
How to claim this offer
HeyGen Voice Turbo Free: $0 Text-to-Speech API Until November 30, 2026
Use HeyGen Voice Turbo Free through November 30, 2026 at $0: no credit card, no credit balance. Call POST /v3/models/audio/tts with "model": "heygen-voice-1-turbo-free" and a public voice or instant clone, and receive a 44.1 kHz WAV. Shared free capacity only — a busy queue returns HTTP 429.
- $0 through November 30, 2026 — no credit card, no credit balance required
- Model: heygen-voice-1-turbo-free, via POST /v3/models/audio/tts (or /tts/stream)
- Output: 44.1 kHz WAV, completed or streamed
- Public voices and instant voice clones; professional clones not supported
- Try it with no clone: public voice Nadine (83548de556df48ba8c09c42a57c51d85) in HeyGen's free speech example
- 30 requests per minute per workspace member per endpoint by default
- Shared, limited capacity: HTTP 429 when free capacity is full; no uptime or latency guarantee
- A free request never switches to a paid model
How to claim this deal
- 1
Create a HeyGen account and open the API keys page at platform.heygen.com/api-keys to create a key — no credit card required.
- 2
Send your key in the X-Api-Key header to POST https://api.heygen.com/v3/models/audio/tts.
- 3
Set "model": "heygen-voice-1-turbo-free" explicitly — the default model is the paid heygen-voice-1, so forgetting this string means paid rates.
- 4
Pick a voice: a public voice (try Nadine, 83548de556df48ba8c09c42a57c51d85) or an instant voice you cloned from one recording.
- 5
Send your text and collect the 44.1 kHz WAV URL from the response. If you get HTTP 429, free capacity is full — retry later.
Verified Nov 3, 2026 on heygen.com/blog/heygen-voice-turbo and developers.heygen.com/docs/models/heygen-voice (free until November 30, 2026; no credit balance required; shared capacity; professional clones not supported). HeyGen says it will notify users before this offer changes.
Key benefits
- The #1-ranked text-to-speech model on Artificial Analysis (per HeyGen's blog, captured October 20, 2026) at $0
- No card, no credits, no clone needed to start — a public voice works immediately
- Instant voice clones free to create during the preview, from a single recording
- A free request can never silently become a paid charge
Eligibility and requirements
- A HeyGen account and an API key
- The X-Api-Key header on every request
- An ACTIVE public voice or instant voice clone (professional clones not supported)
- Free only through November 30, 2026
- Public voices and instant clones only
- Shared capacity, best effort — HTTP 429 possible even below the request limit
- For tests, prototypes, and small amounts of speech, per HeyGen's docs
Pro tip
Set the model string explicitly on every call — the default is the paid heygen-voice-1, and forgetting "heygen-voice-1-turbo-free" is the one way this free offer quietly becomes a paid bill. Test first with the public Nadine voice so you need no clone at all.
Who is eligible?
Eligibility requirements
Anyone with a HeyGen account and an API key. No credit card and no credit balance required for Turbo Free. Public voices or instant voice clones only; professional clones are not supported on the free model.
HeyGen offer FAQs
How do I use HeyGen Voice Turbo Free?
Create a HeyGen account, make an API key on the API keys page, then POST to https://api.heygen.com/v3/models/audio/tts with your key in the X-Api-Key header and "model": "heygen-voice-1-turbo-free" in the body. You get back a 44.1 kHz WAV URL.
Do I need a credit card or credits for Turbo Free?
No. HeyGen's blog says no credit card, and its docs say no credit balance is required for heygen-voice-1-turbo-free.
Which voices work on the free model?
Public voices and instant voice clones. Professional voice clones are not supported on Turbo Free — those need the paid heygen-voice-1 model and a purchased clone slot.
What happens when free capacity is full?
The API returns HTTP 429. Retry later. A free request never switches to a paid model, so a busy queue cannot silently charge you.
What happens after November 30, 2026?
The free model ends. Paid Turbo is listed at $4 per million characters on HeyGen's blog price table (HeyGen Voice at $15 per million). HeyGen says it will notify users before the offer changes.
Is HeyGen Voice Turbo really the #1 voice model?
That is HeyGen's claim, attributed to the Artificial Analysis text-to-speech leaderboard and captured October 20, 2026 on HeyGen's blog: Turbo ranks first and HeyGen Voice second. It is a leaderboard ranking, not an independent test by aicredits.tech.
Can I use Turbo Free for production?
Only for small amounts: HeyGen's docs position Turbo Free for tests, prototypes, and small amounts of speech, with no uptime or latency guarantee. Anything that must keep running should budget the paid Turbo rate.
About HeyGen
HeyGen is an AI video creation platform — avatars, voice cloning, lip-sync translation, and agentic video workflows. HeyGen Voice is its in-house voice model, and Turbo is the faster, cheaper mode of that model for developers.
