GPAI Ledger › Mythos 5.1 / Fable 5.1 (Anthropic) › Capture 13 Sep 2026
Mythos 5.1 / Fable 5.1 — capture 20260913T114735Z
| Provider | Anthropic |
|---|---|
| Target | AIAL evaluation page — https://aial.ie/research/gpai-training-transparency/evals/anthropic-mythos5.1/ |
| Fetched (UTC) | 2026-09-13T11:47:35Z |
| Stored file | 19,957 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 | abdb14d358b9c095db9b4fcb73a630f3aa08781ef6ed65402fd64d5d85112e97 |
| OpenTimestamps proof | abdb14d358b9c095db9b4fcb73a630f3aa08781ef6ed65402fd64d5d85112e97.html.20260913T114735Z.ots (calendar-attested; anchored in bitcoin over time; identical bytes were first archived on 12 Sep 2026 — that version carries the earliest attestation) |
| 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 | 19,957 bytes |
|---|---|
| Canonical text SHA-256 | f312a5b2d2e77c7ec8905893600e931aee3e2f767e698bb0e4aa44728bb49e66 |
| Extracted text length | 686 words |