Sora

At a glance

Video

Content CredentialsA signed record (C2PA) of how the file was made, sealed so any change shows.

OpenAI's provenance table lists Content Credentials as the provenance signal for video and notes that Sora is discontinued. Its Sora 2 System Card of September 30, 2025 and its safety post of March 23, 2026 both say all Sora videos carry C2PA metadata.

OpenAI discontinued the Sora web and app experiences on April 26, 2026, and says the Sora 2 models and Videos API were shut down on September 24, 2026.

Provenance signals in OpenAI-generated contentOpenAI (OpenAI Help Center)

Quoted passage Which provenance signals does OpenAI use? (table row: Video)

Video Content Credentials Sora is discontinued.

Sora 2 System Card: Provenance and Transparency InitiativesOpenAI (Deployment Safety Hub)

Quoted passage 3.3 Provenance and Transparency Initiatives

For general availability, our provenance safety tooling for our First-party (1P) products will include: C2PA metadata on all assets, providing verifiable origin through an industry standard Visible moving watermark on videos downloaded from sora.com or the Sora app Internal detection tools to help assess whether a certain video or audio was created by our products.

Creating with Sora safelyOpenAI

Quoted passage Dateline; banner; Distinguishing AI content

OpenAI March 23, 2026 Safety Creating with Sora safely Read previous version" "As of April 26, 2026, the Sora product is no longer available. […] Every video generated with Sora includes both visible and invisible provenance signals. All Sora videos also embed C2PA metadata—an industry-standard signature—and we maintain internal reverse-image and audio search tools that can trace videos back to Sora with high accuracy, building on successful systems from ChatGPT image generation and Sora 1. Many outputs also carry visible, dynamically moving watermarks which include the name of the creator.

What to know about the Sora discontinuationOpenAI (OpenAI Help Center)

Quoted passage When will Sora be discontinued?

The Sora web and app experiences were discontinued on April 26, 2026. The Sora API will be discontinued on September 24, 2026.

Video generation with Sora (OpenAI API guide)OpenAI (OpenAI API docs)

Quoted passage Page notice at top of the guide

The Sora 2 models and Videos API were shut down on September 24, 2026 and are no longer available. No one-to-one replacement API is available. This guide is retained for historical reference.

Invisible watermarkA signal woven into the pixels, frames, audio or wording, meant to survive copying.

Not stated. None of OpenAI's pages listed under Sources read says so.

OpenAI's Sora safety posts refer to visible and invisible provenance signals but name only C2PA metadata, visible watermarks and internal search tools; they name no invisible watermark.

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 OpenAI's pages listed under Sources read says so.

Visible markA mark you can see, such as a logo or a sparkle in a corner.

In its safety post of March 23, 2026 OpenAI said many Sora outputs carry visible, dynamically moving watermarks that include the creator's name, and that videos made from uploaded images of people always carry watermarks when shared, without saying of which kind. At the Sora 2 launch on September 30, 2025, OpenAI said all outputs carried a visible watermark, and its system card listed a visible moving watermark on videos downloaded from sora.com or the Sora app.

OpenAI's statements changed: the March 2026 post says "many" outputs carry a visible watermark, where the launch post said all did. Sora is no longer available.

Creating with Sora safelyOpenAI

Quoted passage Dateline; banner; Distinguishing AI content

OpenAI March 23, 2026 Safety Creating with Sora safely Read previous version" "As of April 26, 2026, the Sora product is no longer available. […] Every video generated with Sora includes both visible and invisible provenance signals. All Sora videos also embed C2PA metadata—an industry-standard signature—and we maintain internal reverse-image and audio search tools that can trace videos back to Sora with high accuracy, building on successful systems from ChatGPT image generation and Sora 1. Many outputs also carry visible, dynamically moving watermarks which include the name of the creator.

Creating with Sora safelyOpenAI

Quoted passage Image-to-video with real person likeness

Users can upload images with people to make videos in Sora, after attesting that they have consent from people featured and rights to upload the media. […] These videos will always have watermarks upon sharing as well.

Sora 2 System Card: Provenance and Transparency InitiativesOpenAI (Deployment Safety Hub)

Quoted passage 3.3 Provenance and Transparency Initiatives

For general availability, our provenance safety tooling for our First-party (1P) products will include: C2PA metadata on all assets, providing verifiable origin through an industry standard Visible moving watermark on videos downloaded from sora.com or the Sora app Internal detection tools to help assess whether a certain video or audio was created by our products.

Launching Sora responsiblyOpenAI

Quoted passage Dateline and 'Read newest version' link; page banner; Distinguishing AI content

OpenAI September 30, 2025 Launching Sora responsibly Read newest version" "As of April 26, 2026, the Sora product is no longer available. […] Every video generated with Sora includes both visible and invisible provenance signals. At launch, all outputs carry a visible watermark. All Sora videos also embed C2PA metadata—an industry-standard signature—and we maintain internal reverse-image and audio search tools that can trace videos back to Sora with high accuracy

Tool named in metadataThe tool or model written into ordinary file fields, such as Software or Creator.

Not stated. None of OpenAI'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.

At the Sora 2 launch on September 30, 2025, OpenAI said it kept internal reverse-image and audio search tools to trace videos back to Sora, and its system card lists internal detection tools.

Launching Sora responsiblyOpenAI

Quoted passage Dateline and 'Read newest version' link; page banner; Distinguishing AI content

OpenAI September 30, 2025 Launching Sora responsibly Read newest version" "As of April 26, 2026, the Sora product is no longer available. […] Every video generated with Sora includes both visible and invisible provenance signals. At launch, all outputs carry a visible watermark. All Sora videos also embed C2PA metadata—an industry-standard signature—and we maintain internal reverse-image and audio search tools that can trace videos back to Sora with high accuracy

Sora 2 System Card: Provenance and Transparency InitiativesOpenAI (Deployment Safety Hub)

Quoted passage 3.3 Provenance and Transparency Initiatives

For general availability, our provenance safety tooling for our First-party (1P) products will include: C2PA metadata on all assets, providing verifiable origin through an industry standard Visible moving watermark on videos downloaded from sora.com or the Sora app Internal detection tools to help assess whether a certain video or audio was created by our products.