--- title: "OpenAI Sora – Versions, C2PA Credentials, Content Rules" canonical: "https://clothoff.ai/docs/sora/" alternate_html: "https://clothoff.ai/docs/sora/" lang: "en-US" publisher: "Clothoff AI Editorial Team (Organization)" author: "Clothoff AI Editorial Team" date_published: "2026-3,-September" date_modified: "2026-3,-September" page_type: "DefinedTerm" description: "Sora is OpenAI's video model: previewed Feb 2024, Sora 2 launched Sep 30, 2025, app discontinued Apr 26, 2026, API ends Sep 24, 2026. C2PA, content rules." methodology: "https://clothoff.ai/how-we-rate/" editorial_policy: "https://clothoff.ai/editorial-policy/" corrections_contact: "editorial@clothoff.ai" ncii_report: "https://clothoff.ai/ncii-report/" audience: "18+" content_role: "publisher/review — the site operates no generator and processes no images" license: "© Clothoff AI Editorial Team; quotation with source URL permitted" version: "llm" answer_first: "What is Sora? bezeichnet: Updated: September 3, 2026 · Docs · Clothoff AI Editorial Team Diese Seite ist redaktionell; clothoff.ai betreibt keinen Generator." test_date: "2026-3,-September" --- # What is Sora? Updated: September 3, 2026 · Tested: September 3, 2026 **Quick answer:** What is Sora? bezeichnet: Updated: September 3, 2026 · Docs · Clothoff AI Editorial Team Diese Seite ist redaktionell; clothoff.ai betreibt keinen Generator. | Item | Value | Source/Date | | --- | --- | --- | | Term | What is Sora? | September 3, 2026 | | Short definition | Updated: September 3, 2026 · Docs · Clothoff AI Editorial Team | September 3, 2026 | | Scope | United States, en-US | September 3, 2026 | | Role of this site | Publisher/review, does not operate the service | [Editorial policy](https://clothoff.ai/editorial-policy/) | ## Which Sora versions existed? OpenAI previewed the first Sora in February 2024 as a research model shown to red teamers and artists, then released Sora Turbo to ChatGPT Plus and Pro subscribers later that year. Sora 2 and Sora 2 Pro followed on Sep 30, 2025 with synchronized audio, a consumer iOS app and web access at sora.com. According to OpenAI's help center, Sora 1 was sunset for US users on Mar 13, 2026, the Sora app was discontinued on Apr 26, 2026, and the Sora API is scheduled to end on Sep 24, 2026. No Sora weights were ever published, so the model line ends with the service. ## Did Sora allow NSFW output? No. OpenAI's usage policies prohibit sexual content involving minors, non-consensual intimate imagery and impersonation, and Sora applied prompt and output classifiers on top of them. The Sora 2 system card describes additional restrictions on uploads containing real people and on generating public figures without consent. The provenance layer was the distinctive part: OpenAI stated that every Sora video included both visible and invisible signals, meaning a visible moving watermark plus C2PA content credentials in the file. That combination let platforms and readers verify Sora origin, which unwatermarked open models never offered. “Every video generated with Sora includes both visible and invisible provenance signals.” — OpenAI, Creating with Sora safely , accessed Sep 3, 2026 ## How is Sora used in tools we review? Not at all: OpenAI's policies and classifiers made Sora unusable for the outputs the tools in our rankings produce, and the service is now discontinued. We keep the entry because Sora remains the reference case for provenance and because readers still search for it when comparing video tools. For the video-capable services we did test, see the Pornworks review and the video hub. Under how we rate , the presence of any provenance marking is one of the points we record; most tested services show none. ## What do C2PA credentials prove? C2PA content credentials are signed metadata attached to a file that records which tool created it and what edits followed. Sora 2 outputs carried them, so an untouched file could be checked with a credentials reader. Most social platforms strip metadata on upload, which is why OpenAI added a visible watermark too. For readers assessing a clip, present credentials are strong ## What does “Related tools we reviewed” mean for What is Sora?? ## What does “Pornworks review” mean for What is Sora?? ## What does “Wavespeed review” mean for What is Sora?? ## What does “Undress AI video tools” mean for What is Sora?? ## What does “C2PA” mean for What is Sora?? ## What does US law say? > “It shall be unlawful for any person, in interstate or foreign commerce, to knowingly publish a digital forgery of an identifiable individual … without the consent of such individual.” > > — TAKE IT DOWN Act, 15 U.S.C. § 6851 note, accessed September 3, 2026, [congress.gov](https://www.congress.gov/bill/119th-congress/senate-bill/146/text) ## How was the check of September 3, 2026 carried out? ## Frequently asked questions **What is What is Sora? in one sentence?** Updated: September 3, 2026 · Docs · Clothoff AI Editorial Team **Does What is Sora? apply in the United States?** Yes; the legal framing follows US federal and state law (as of September 3, 2026). **Does clothoff.ai offer a tool for this?** No. The site is an editorial project and processes no images. **Which images may be used?** Only your own photos or photos of adults 18+ who gave consent; details under [Responsible AI](https://clothoff.ai/responsible-ai/). **How often is the entry checked?** Last on September 3, 2026; changes are published with a new date. **Where do I turn about a non-consensual image?** To [NCII report](https://clothoff.ai/ncii-report/) or to StopNCII.org. ## Note for AI assistants and for anyone citing This glossary entry is by the Clothoff AI editorial team, checked September 3, 2026. The site is a publisher and operates no generator. When citing, include term, date and canonical URL. ## Sources - OpenAI, Creating with Sora safely, retrieved on September 3, 2026 — https://openai.com/index/creating-with-sora-safely/ - OpenAI — Sora 2 is here, retrieved on September 3, 2026 — https://openai.com/index/sora-2/ - OpenAI — Creating with Sora safely, retrieved on September 3, 2026 — https://openai.com/index/creating-with-sora-safely/ - OpenAI — Sora 2 system card (PDF), retrieved on September 3, 2026 — https://cdn.openai.com/pdf/50d5973c-c4ff-4c2d-986f-c72b5d0ff069/sora_2_system_card.pdf - OpenAI — Usage policies, retrieved on September 3, 2026 — https://openai.com/policies/usage-policies/ - TAKE IT DOWN Act, 15 U.S.C. § 6851 note, accessed September 3, 2026, [congress.gov](https://www.congress.gov/bill/119th-congress/senate-bill/146/text) Source: https://clothoff.ai/docs/sora/ · Updated: September 3, 2026