Indicators / series
epoch_bench.claude_opus_5_5_max_proximus.frontierswe.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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 63b836be18f01837 | 62.3% | grade B, evidence tier 6 | 2026-09-22 | 2026-09-22 | 6 | reported | api | approved | 2026-09-29 13:04 | 200 | 8748d8b3eb6e | — | source page |
Raw snippets and dispute text
- 63b836be18f01837 {"Cost per task": null, "Harness": "proximus", "Model version": "claude-opus-5-5_max", "Name": "Claude Opus 5.5", "Organization": "Anthropic", "Release date": "2026-09-22", "Score": "0.623309882352941", "Source": "https://www.frontierswe.com/", "id": null}