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anthropic_system_card.anthropic.staff_productivity_uplift_geomean.pt
Source: Anthropic system cards (Anthropic) · Anthropic; short quotation · CSV
Anthropic, Claude Fable 5.1 & Claude Mythos 5.1 System Card (1 Sep 2026)
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2b0855fb984aeb0e | 4.00× | grade D, evidence tier 7 | 2026-04-07 | 2026-09-01 | 7 | company_stated | manual | approved | 2026-09-10T04:25:25.578724Z | 200 | b0d59edc7a60 | — | source page |
Raw snippets and dispute text
- 2b0855fb984aeb0e The geometric mean of the responses was on the order of 4x, though Anthropic estimated an overall progress multiplier below 2x.