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HeyGen’s self-serve (Pay-As-You-Go) plan lets you purchase USD balance when you need it — no monthly subscription, no commitments.

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How Billing Works

When you authenticate with an API Key (x-api-key header), you are billed under the API tier. Usage is deducted from your prepaid USD wallet. Check your balance at any time: 
GET /v3/users/me → wallet
OAuth vs API Key: If you authenticate with an OAuth bearer token, usage is billed against your web plan, not the API tier. Check your web plan balance with GET /v3/users/me → subscription.Using an API Key is recommended for automation and integration workflows. API key authentication provides higher concurrency limits and is more flexible and powerful for programmatic use.

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Pricing

All rates are billed in USD based on output duration.

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Video Generation — Avatar V

Highest-fidelity engine with cross-reference-driven animation — see the Avatar V model page for engine details. Avatar V supports Digital Twins only.
Avatar Type720p / 1080p
Digital Twin$0.0667 / sec

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Video Generation — Avatar IV

Default v3 engine — see the Avatar IV model page for engine details.
Avatar Type720p / 1080p
Photo Avatar$0.05 / sec
Digital Twin$0.0667 / sec
Studio Avatar$0.0667 / sec

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Video Generation — Avatar III

Dedicated photo-to-video pipeline — see the Avatar III model page for engine details.
Avatar Type720p / 1080p
Digital Twin$0.0167 / sec
Studio Avatar$0.0167 / sec
Photo Avatar$0.0433 / sec

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Cinematic Avatar

Flat rate per video (4–15 seconds, 720p/1080p only), not billed by duration. See the Cinematic Avatar guide.
ItemRate
Cinematic Avatar video$7.00 / video

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Avatar Realtime

Live streaming avatar session, billed per second of session duration (720p only). See the Avatar Realtime guide.
FeatureRate
Avatar Realtime session$0.05 / sec

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Video Agent

FeatureRate
Prompt to Video$0.0333 / sec

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HyperFrames

Billed per minute of output video; the rate scales with resolution and fps. See the HyperFrames guide.
Resolution / Frame RateRate
1080p / 30 fps$0.10 / min
1080p / 60 fps$0.20 / min
4K / 30 fps$0.15 / min
4K / 60 fps$0.30 / min

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Video Translation

ModeRate
Speed — Audio Only$0.0333 / sec
Speed — Lip Sync$0.0333 / sec
Precision — Lip Sync$0.0667 / sec
Note: Proofread mode is available on Enterprise plans only.

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Lipsync

ModeRate
Speed$0.0333 / sec
Precision$0.0667 / sec

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AI Clipping

Turn a long-form video into short highlight clips, billed per clip produced. See the AI Clipping guide.
ItemRate
Highlight clip$0.15 / clip

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Text-to-Speech

ModelRate
Speech — Starfish$0.000667 / sec

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Avatar Creation

OperationRate
Digital Twin$1.00 per call
Photo Avatar$1.00 per call