GPAI Ledger › Claude Mythos 5 / Claude Fable 5 (Anthropic) › Capture 29 Aug 2026
Claude Mythos 5 / Claude Fable 5 — capture 20260829T190150Z
| Provider | Anthropic |
|---|---|
| Target | AIAL evaluation (earlier state) — https://raw.githubusercontent.com/AIAccountabilityLab/gpai-training-transparency/948877cb12c420f0cc45ba011ba255f0570f985e/evals/claude-mythos-5-fable-5.yaml |
| Fetched (UTC) | 2026-08-29T19:01:50Z |
| Upstream commit | 6 Aug 2026 — 948877cb12c4 (when this state began to stand in the upstream repository; this archive fetched it at the time above, not then) |
| Stored file | 4,978 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 | 31cfdbe1dbd5c5c262f80a00752681f3c9d4f783421a5f63beb859d7ae35c0e6 |
| OpenTimestamps proof | 31cfdbe1dbd5c5c262f80a00752681f3c9d4f783421a5f63beb859d7ae35c0e6.yaml.20260829T190150Z.ots (calendar-attested; anchored in bitcoin over time) |
| Wayback | not saved |
| Prior capture of this target | 56da5b76caae44f159c21be25c843a87fbbae5bed9e8dfe8bc977a39ce2baa16 (captured 2026-08-29T18:57:46Z) |
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 | 4,978 bytes |
|---|---|
| Canonical text SHA-256 | 2ed7376460083d4ee0e194bede63dfa0efbb87b8774292bfe3f67ccd0d9c2a53 |
| Extracted text length | 648 words |