Lab system cards and frameworks · System card · Anthropic

System Card: Claude Opus 4.6

6 Feb 2026

This is version r2. The latest is r3.

Outline

The outline is kept for the latest version, r3. Open at p. 1

How to cite

A citation names the document, the version and the place.

anthropic:claude-opus-4-6-system-card/r2/p1

https://safetypage.noahairmet.com/d/anthropic/claude-opus-4-6-system-card/r2/p1

BibTeX

@misc{anthropic2026,
  title = {System Card: Claude Opus 4.6},
  author = {{Anthropic}},
  year = {2026},
  url = {https://anthropic.com/claude-opus-4-6-system-card}
}

Versions

Version	Published	Read
r3 latest	6 Feb 2026	At source
r2	6 Feb 2026	At source
r1	5 Feb 2026	At source

Licence

So you: Search it, cite it and check quotes here; read it at its source