Indicators / series
epoch_bench.claude_opus_4_1.eci_closed.pt
Source: Epoch AI benchmarks and Capabilities Index (Epoch AI) · CC BY 4.0 · CSV
Epoch AI, Benchmarking Hub and Epoch Capabilities Index (CC BY 4.0)
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7b6841f7fc2ca0dd | 144 index (142–146) | grade A, evidence tier 1 | 2025-08-05 | 2025-08-05 | 1 | reported | api | approved | 2026-09-10T06:33:11.514623Z | 200 | cde2f74ecf00 | — | source page |
Raw snippets and dispute text
- 7b6841f7fc2ca0dd {"Accessibility group": "Closed weights", "Display name": "Claude Opus 4.1", "Model": "Claude Opus 4.1", "Organization": "Anthropic", "date": "2025-08-05", "eci": "144.12", "eci_ci_high": "145.99", "eci_ci_low": "141.76"}