Review access and pricing

API access requirements, credit-based pricing, and plan details.

Looking for general Gamma help? This page is for developers using the API. For general guidance on credits and billing, see How do credits work in Gamma? in the Help Center.

Quick reference

• ChatGPT and Claude connectors work on all plans.
• API keys are available on Pro, Ultra, Teams, and Business plans.
• Credit usage is returned in the credits field on GET /v1.0/generations/{generationId}.
• Auto-recharge is the safest way to prevent failed generations due to exhausted credits.

Access

API keys (Zapier, Make, n8n, direct integration)

API key access is available on Pro, Ultra, Teams, and Business plans. Generate an API key from Settings > API Keys. View pricing plans here.

Settings > API Keys

OAuth apps (acting on behalf of your users)

Apps can also authenticate users via OAuth instead of an API key. Requests made with an OAuth token consume the authorizing user's credits in the workspace they connected.

Connectors (ChatGPT, Claude)

Connectors are available on all plans, including Free and Plus. No API key required — connect directly from ChatGPT or Claude and authenticate with your Gamma account. Generations via connectors charge credits the same way as API calls.

Usage and pricing

• API billing uses a credit-based system. Higher tier subscribers receive more monthly credits.
• If you run out of credits, you can upgrade to a higher subscription tier, purchase credits ad hoc, or enable auto-recharge (recommended) at Settings > Billing.

Settings > Billing

How credits work

Credit charges are determined based on several factors and are returned in the GET response.

Feature	API parameter	Credits Charged*
Number of cards	numCards	1-3 credits/card (varies by the text generation model Gamma selects internally)
AI image model	imageOptions.model	Standard: 2-15 credits/image. Advanced: 20-33 credits/image. Premium: 34-75 credits/image. Ultra: 30-125 credits/image.

* Credit consumption rates and the actions that consume credits are subject to change.

Template-based generations (POST /generations/from-template) may cost slightly more per card than standard generations.

Illustrative scenarios

• Deck with 10 cards + 5 images using a basic image model = ~20-60 credits
• Doc with 20 cards + 15 images using a premium image model = ~320-1070 credits
• Socials with 30 cards + 30 images using an ultra image model = ~930-3900 credits

Both standard generations (POST /generations) and template-based generations (POST /generations/from-template) consume credits. Credit usage details are returned in the credits field of the GET /generations/{generationId} response, showing deducted and remaining values.

To learn more about credits, visit our Help Center.

Related

• Connect integrations for setup instructions by platform
• Poll for results for where credits.deducted and credits.remaining appear in the generation flow
• Get Help if you need support with pricing or API access