GPAI Ledger › Claude Sonnet 4.5 (Anthropic) › Capture 29 Aug 2026
Claude Sonnet 4.5 — capture 20260829T183321Z
| Provider | Anthropic |
|---|---|
| Target | AIAL evaluation (earlier state) — https://raw.githubusercontent.com/AIAccountabilityLab/gpai-training-transparency/f0e434e12a91c0781460a6322c1b0be1236c8728/evals/claude-sonnet-4.5.yaml |
| Fetched (UTC) | 2026-08-29T18:33:21Z |
| Upstream commit | 20 Mar 2026 — f0e434e12a91 (when this state began to stand in the upstream repository; this archive fetched it at the time above, not then) |
| Stored file | 3,800 bytes — not served (third-party research, archived but not republished here); the hash and timestamp proof below still establish what was published when |
| SHA-256 | 61b2763c56bd8a0bd273e6107a2f7e0bb6c901db4986f1ebfa5fd0a4c2275f1e |
| OpenTimestamps proof | 61b2763c56bd8a0bd273e6107a2f7e0bb6c901db4986f1ebfa5fd0a4c2275f1e.yaml.20260829T183321Z.ots (calendar-attested; anchored in bitcoin over time) |
| Wayback | not saved |
| Prior capture of this target | — first capture of this target |
Verify: obtain the file from the target address above, then sha256sum it — it must equal the hash above; the .ots proof dates that hash.
Structured facts
This is another organisation's own research, and this project does not redistribute it: the file itself is not served here; these facts still pin its identity and let any copy be authenticated against this record.
| Document size | 3,800 bytes |
|---|---|
| Canonical text SHA-256 | daffca79f05fa78ee58162672f1fe579a7b3730d49d2ba1fab051b81eb23eab1 |
| Extracted text length | 435 words |