Stability AI
Stability AI Platform API
What Stability AI says Stability AI Platform API puts into the files it makes, by file type, quoted from Stability AI's own pages. Covers the Stability AI Platform API and Stability AI's other hosted services.
At a glance
| File type | Content Credentials | Invisible watermark | AI label in metadata | Visible mark | Tool named in metadata |
|---|---|---|---|---|---|
| Images | Release notes 2024-25 | Listed in 2024 | Not stated | Not stated | Not stated |
| Video | Not stated | Not stated | Not stated | Not stated | Not stated |
| Audio | Not stated | Not stated | Not stated | Not stated | Not stated |
Images
- Content CredentialsA signed record (C2PA) of how the file was made, sealed so any change shows.
Stability AI's API release notes say all of its APIs come with standard safety features that include C2PA signing; the line first appears on April 30, 2024, and the latest entry carrying it is dated April 1, 2025. Stability AI also says it is implementing C2PA, in partnership with the Content Authenticity Initiative, so users and platforms can identify AI-assisted content generated through its hosted services.
Stability AI does not name the signer.
Release Notes (Stability AI API Platform)
Quoted passage Entry dated April 1, 2025, 'Style Transfer', closing paragraph
April 1, 2025 Style Transfer Today we are releasing Style Transfer on the Stability AI API." "As always, all of our APIs come with standard safety features for input filtering, NSFW filtering of input images and generated content, known CSAM content filtering through Thorn, and C2PA signing.
Release Notes (Stability AI API Platform)
Quoted passage Entries dated May 20, 2024 ('Stable Image Erase Object & Conservative Upscale') and April 30, 2024, closing paragraph
May 20, 2024 Stable Image Erase Object & Conservative Upscale" "As always, all of our APIs come with standard safety features for input filtering, NSFW filtering of input images and generated content, known CSAM content filtering through Thorn, C2PA signing, and Watermarking.
Quoted passage Our Safety Commitments: Safety in standards, with footnote
We are implementing content authenticity standards so that users and platforms can identify AI-assisted content generated through our hosted services." "Coalition for Content Provenance and Authenticity (C2PA) standards in partnership with the Content Authenticity Initiative (CAI)
- Invisible watermarkA signal woven into the pixels, frames, audio or wording, meant to survive copying.
Stability AI's API release notes of April 30 and May 20, 2024 list watermarking, with C2PA signing, among the standard safety features of all its APIs; later entries name C2PA signing without watermarking and do not say watermarking stopped. An undated Stability AI page that appears to date from 2024 says it applies an imperceptible watermark to images generated on its platform.
Stability AI does not name the watermark.
Release Notes (Stability AI API Platform)
Quoted passage Entries dated May 20, 2024 ('Stable Image Erase Object & Conservative Upscale') and April 30, 2024, closing paragraph
May 20, 2024 Stable Image Erase Object & Conservative Upscale" "As always, all of our APIs come with standard safety features for input filtering, NSFW filtering of input images and generated content, known CSAM content filtering through Thorn, C2PA signing, and Watermarking.
Artificial Intelligence and the Content Ecosystem
Quoted passage Paragraph on safeguards ('We apply an imperceptible watermark …')
We apply an imperceptible watermark to images generated on our platform, and include watermarking by default in our open image models." "With significant elections in over 60 countries impacting 4 billion people this year, we believe safeguarding democracy is of paramount importance.
- AI label in metadataA plain metadata field (IPTC Digital Source Type) saying AI made the content. Anyone can add or remove it.
Not stated. None of Stability AI's pages listed under Sources read says so.
No Stability page read names an IPTC term.
- Visible markA mark you can see, such as a logo or a sparkle in a corner.
Not stated. None of Stability AI's pages listed under Sources read says so.
- Tool named in metadataThe tool or model written into ordinary file fields, such as Software or Creator.
Not stated. None of Stability AI's pages listed under Sources read says so.
Not stated beyond C2PA signing.
Video
- Content CredentialsA signed record (C2PA) of how the file was made, sealed so any change shows.
Not stated. None of Stability AI's pages listed under Sources read says so.
- Invisible watermarkA signal woven into the pixels, frames, audio or wording, meant to survive copying.
Not stated. None of Stability AI's pages listed under Sources read says so.
- AI label in metadataA plain metadata field (IPTC Digital Source Type) saying AI made the content. Anyone can add or remove it.
Not stated. None of Stability AI's pages listed under Sources read says so.
- Visible markA mark you can see, such as a logo or a sparkle in a corner.
Not stated. None of Stability AI's pages listed under Sources read says so.
- Tool named in metadataThe tool or model written into ordinary file fields, such as Software or Creator.
Not stated. None of Stability AI's pages listed under Sources read says so.
Audio
- Content CredentialsA signed record (C2PA) of how the file was made, sealed so any change shows.
Not stated. None of Stability AI's pages listed under Sources read says so.
The Stable Audio 2.0 (March 21, 2025) and Stable Audio 3.0 (May 20, 2026) release notes do not repeat the C2PA line, and Stability AI does not say whether "all of our APIs" in its image entries covers audio.
- Invisible watermarkA signal woven into the pixels, frames, audio or wording, meant to survive copying.
Not stated. None of Stability AI's pages listed under Sources read says so.
- AI label in metadataA plain metadata field (IPTC Digital Source Type) saying AI made the content. Anyone can add or remove it.
Not stated. None of Stability AI's pages listed under Sources read says so.
- Visible markA mark you can see, such as a logo or a sparkle in a corner.
Not stated. None of Stability AI's pages listed under Sources read says so.
- Tool named in metadataThe tool or model written into ordinary file fields, such as Software or Creator.
Not stated. None of Stability AI's pages listed under Sources read says so.
Limits and detection
- Checking tool from the makerA way the maker offers to check a file for its traces.
Not stated. None of Stability AI's pages listed under Sources read says so.
Stability AI describes no detection tool for output from its hosted services.
- What the maker says about limitsIn the maker's own words.
Stability AI's Terms of Service, effective September 30, 2026, bar users from knowingly removing, obscuring, disabling or circumventing any watermark, content credential, provenance information or other marking Stability applies to identify an output as AI-generated or manipulated.
Terms of Service (Stability AI)
Quoted passage 3. Using our Services, b. Use Restrictions
To knowingly remove, obscure, disable, or circumvent any watermark, content credential, provenance information, or other marking applied by Stability to identify an Output as AI-generated or manipulated, except as expressly permitted by Stability, the applicable documentation, or applicable law.
Sources read
Each page below was read and the quoted passage found on it. Last verified October 19, 2026.
- Stable SafetyStability AI
- Artificial Intelligence and the Content EcosystemStability AI
- Release Notes (Stability AI API Platform)Stability AI
- generative-models README (Stability-AI GitHub)Stability AI
- Terms of Service (Stability AI)Stability AI