# Winthropic Index run :: 2026-09-06

**As of 2026-09-06, 2 of 5 tracked Claude models changed their pass count versus the previous run: sonnet-5 12/12 (up 1), fable-5-1 11/12 (down 1).**

Battery v1.

| Model | Score |
|---|---|
| haiku-4-5 | 11/12 |
| sonnet-5 | 12/12 |
| opus-5 | 12/12 |
| fable-5 | 12/12 |
| fable-5-1 | 11/12 |

## Anomalies

- haiku-4-5 :: constraint_no_e :: The vast blue sky stretches across our world.
- fable-5-1 :: exact_word_count :: Soft drops falling from gray skies

Raw data: https://winthropic.com/api/runs/2026-09-06.json