GPAI Ledger › GPAI Training Transparency tracker (AI Accountability Lab (AIAL)) › Capture 30 Sep 2026
Claude Opus 5.5 — capture 20260930T115609Z
Filed under AI Accountability Lab (AIAL) — GPAI Training Transparency tracker, the source this project captured it from; the assessment itself is of the model named above.
| Provider | Anthropic |
|---|---|
| Target | AIAL evaluation (earlier state) — https://raw.githubusercontent.com/AIAccountabilityLab/gpai-training-transparency/919ee13931672bd9c64f9155d2fc76911b76f4d4/evals/anthropic-claude-opus-5-5.yaml |
| Fetched (UTC) | 2026-09-30T11:56:09Z |
| Upstream commit | 29 Sep 2026 — 919ee1393167 (when this state began to stand in the upstream repository; this archive fetched it at the time above, not then) |
| Stored file | 3,911 bytes — not served (third-party research, archived but not republished here); the hash, timestamp proof and Wayback witness below still establish what was published when |
| SHA-256 | 313fe35e761a8ed3c253a60d501d4a288f1d50cce02aa019c90be9585e63e06b |
| OpenTimestamps proof | 313fe35e761a8ed3c253a60d501d4a288f1d50cce02aa019c90be9585e63e06b.yaml.20260930T115609Z.ots (calendar-attested; anchored in bitcoin over time) |
| Wayback | Wayback snapshot, 2026-09-30 11:58 UTC |
| Prior capture of this target | — first capture of this target |
Verify: obtain the file from the target address above, or from the Wayback snapshot below, 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 | 3,911 bytes |
|---|---|
| Canonical text SHA-256 | 3c9c91827582f1b869c9ddbf4434324052b0e7bda2d622eb270871ddfde73d44 |
| Extracted text length | 435 words |