Hosted image, audio and 3D APIs with 25 starter credits for eligible new-account testing.
Free limit
25 starter credits
Image examples
View all 6 imagesProvider artwork, not FreeAIList test results. These previews do not establish Free-plan access or generation costs.
About Stability AI API
Stability AI exposes hosted generation and editing services through its developer API. The getting-started guide grants 25 free credits to new accounts created through Google sign-in. Prepare one authenticated image request, check the per-service price and inspect the returned file before integrating generation into an application.
- Image generation API
- Image editing API
- Image upscaling API
- Audio generation API
- 3D generation API
Free offer
- Allowance
- The getting-started guide grants 25 free credits to a new account created with Google sign-in; its key article uses broader new-account wording. Check the balance actually granted. This is a one-time starter allowance, not a daily or monthly refill. Core currently costs 3 credits per successful generation; other endpoints have different prices.
- Resets
- One time
- Commercial use
- Restricted
Requirements
- Account
- Yes
- Credit card
- Unknown
- Watermark
- Unknown
Best for
- Testing a single authenticated image request
- Prototyping image generation and editing in an application
- Comparing hosted endpoint costs
Important restrictions & access notes
- Starter credits are one-time, not recurring free compute
- Google-signup eligibility is explicit in the getting-started guide; verify the granted balance
- Core costs 3 credits per success and high-cost upscalers can exceed the starter allowance
- Credits issued from September 30, 2026 generally expire one year after issuance or purchase unless otherwise specified
- API keys must stay out of browser code, public repositories and shared screenshots
- Output rights depend on terms, acceptable use, model conditions and third-party rights
- Applied watermarks and provenance markings must not be removed without permission
- No universal card or visible-watermark rule was established
- Self-hosted models and cloud-partner billing are separate from hosted API credits
- Platform: Web browser for account setup
- Platform: HTTPS API client
- Verification: New Google sign-in is the explicitly documented starter-credit route
- Verification: Stability AI account and secret API key
- Verification: Check actual balance, endpoint price and applicable terms
Checked on Oct 3, 2026
Source verified against official provider documentation.
