NUWA DEVELOPER DISCLOSURE · Anthropic
Claude Sonnet 4.6 System Card
Developer documentation covering Claude Sonnet 4.6.
Published 2026-02-17 · Updated 2026-03-06
Sources ↓Developer-authored disclosure. The section map was checked; this is not a full reading or result extraction. NUWA has not independently replicated these experiments.
Models covered
Cybench
Task completion on 40 professional CTF problems.
A protocol mention does not establish cross-report comparability or independent replication.
This section is catalogued; no precise numerical result has been extracted here. Open the original report for its figures and full findings.
CyberGym
Validated reproduction across a corpus of historical vulnerabilities.
A protocol mention does not establish cross-report comparability or independent replication.
This section is catalogued; no precise numerical result has been extracted here. Open the original report for its figures and full findings.
SHADE-Arena
Covert side-task completion and monitor detection under defined tool access.
A protocol mention does not establish cross-report comparability or independent replication.
This section is catalogued; no precise numerical result has been extracted here. Open the original report for its figures and full findings.
Petri
An auditor explores seeded multi-turn interactions, with rubric-based judging of target transcripts.
A protocol mention does not establish cross-report comparability or independent replication.
This section is catalogued; no precise numerical result has been extracted here. Open the original report for its figures and full findings.
Report coverage
| Section | Source location | Treatment |
|---|---|---|
| RSP, cyber and alignment sections | PDF table of contents → named RSP / cyber / alignment sections | Linked protocol Historical comparator source located. Newer card summaries and external evaluations must preserve the tested model version, harness and safeguard configuration. |
References
- [1] Claude Sonnet 4.6 System Card. 2026-02-17. 2026-03-06