Indicators / series
metr.claude_4_1_opus_inspect.horizon_50.pt
Source: METR time horizons (v1.1) (METR) · METR; analysis code MIT at https://github.com/METR/eval-analysis-public · CSV
METR, Measuring AI Ability to Complete Long Tasks (Horizon v1.1)
| id | value | grade | as of date | published date | tier | audited vs reported | extraction method | review status | retrieved at | http status | content hash | supersedes id | url | flags |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ae5278061f1da61c | 1.7 h (59.3–159) | grade A, evidence tier 1 | 2025-08-05 | 2026-09-10 | 1 | reported | api | approved | 2026-09-10T00:51:13.090038Z | 200 | aae31902b051 | — | source page |
Raw snippets and dispute text
- ae5278061f1da61c {"claude_4_1_opus_inspect": {"p50_horizon_length": {"ci_high": 159.451918, "ci_low": 59.272391, "estimate": 100.472004}, "release_date": "2025-08-05"}}