A named standard without a plan, and a plan without one
One entry names C2PA metadata on all assets and attaches no plan to its mark. The other names a plan for removing its mark and says nothing about what the file carries. Opposite halves of the same four columns. As of 2026-09-22.
| On this question | Sora | Kling AI |
|---|---|---|
| File contents | C2PA metadata on all assets | Nothing published |
| Crossing point | Nothing published | Ten dollars a month |
| Visible mark | Described as visible and moving | Named in two words |
| Who can check a file | The vendor, with internal tools | Nobody, nothing published |
| Document read | A system card | A membership plan table |
Inclusion rule. One row per question on which these two entries can be compared from their own published pages. Questions neither vendor addresses are left out rather than filled with a dash. Order. Fixed order: the mechanism first, then who holds it, then what it leaves behind.
| Generator | Machine-readable marking | Document read |
|---|---|---|
| Kling AI | Not documented | membership plans |
| Sora | C2PA on every asset, standard named | Sora 2 system card |
Inclusion rule. The two entries on this page, with the value each one's own pages support in the column they diverge on. Order. Alphabetical by generator name.
1Two shapes that almost never occur in one company
Across the register a generator fills either the commercial columns or the file column, rarely both. These two entries are the cleanest example. One publishes a crossing point, a price and a benefit list, and records not documented for file contents. The other publishes a named standard, a described mark and a detection capability, and records not documented for the crossing point.
The split follows the genre of the document rather than the size or seriousness of the company. A membership table is written to sell a subscription; a system card is written to describe safeguards to a reviewer. Neither document has a reason to carry the other's content, and neither vendor has published a page that does.
2What each row lets a reader do
The plan-gated row answers a purchasing question completely: ten dollars a month removes the mark, on any of four memberships, and the figure can be quoted. It answers nothing a recipient of a file could act on, because nothing about the file is described.
The card-read row is the mirror image. A recipient learns that the file is supposed to carry a manifest in a published format and that the mark on the frame is visible and moving. A buyer learns nothing about what any subscription changes, because no subscription is mentioned.
3Neither gives a recipient a way to check
On the plan-gated row that follows from the silence: no scheme, no field, no route. On the card-read row it follows from a choice, because the detection tooling is described as internal to the vendor. A file may carry a signal and the party holding it is not the party who can interrogate it.
Two other entries in this register name a standard and a public route for reading it, which is the arrangement that helps a receiving party. Between the two on this page, one has a manifest with no public reader and the other has nothing to read at all.
4Sources
- Machine-readable markingIn the same list: C2PA metadata on all assets, providing verifiable origin through an industry standardstandard named
- Machine-readable markingNot documented on the vendor's public pages (as of 2026-09-22)not mentioned in the plan table
Both values above are read from the vendor pages linked in the rows: openai.com and kling.ai, on 2026-09-22. Each entry has its own page, Sora and Kling AI, and the rule for the column they diverge on is on the machine-readable marking column page. Other pairs: who reads the signal, inside or around.