GPAI Ledger › Claude Mythos 5 / Claude Fable 5 (Anthropic) › Capture 31 Aug 2026
Claude Mythos 5 / Claude Fable 5 — capture 20260831T112020Z
| Provider | Anthropic |
|---|---|
| Target | AIAL evaluation page — https://raw.githubusercontent.com/AIAccountabilityLab/gpai-training-transparency/a3575567d55d0b1e4744c902cf7806232eaef55d/public/evals/claude-mythos-5-fable-5/index.html |
| Fetched (UTC) | 2026-08-31T11:20:20Z |
| Upstream commit | 6 Aug 2026 — a3575567d55d (when this state began to stand in the upstream repository; this archive fetched it at the time above, not then) |
| Stored file | 20,568 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 | fb504772bfff3d4cbe05684dacb9af6ac638408d832f10572b83e8004c31296b |
| OpenTimestamps proof | fb504772bfff3d4cbe05684dacb9af6ac638408d832f10572b83e8004c31296b.html.20260831T112020Z.ots (calendar-attested; anchored in bitcoin over time) |
| Wayback | not saved |
| Prior capture of this target | 89f0e36a9ab682011224caf09ddc057b364ea5c9339bfb6d826da5ed578e6d52 (captured 2026-08-31T11:11:25Z) |
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 | 20,568 bytes |
|---|---|
| Canonical text SHA-256 | cd5e89a85df7405a666da4ef5056733600c4268f437870bd6e9b800854c9e0d9 |
| Extracted text length | 800 words |