fedi-index history
How the scores of models move from month to month on the fixed scale of the methodology version.
The same in a table
| Model | 2026-10 |
|---|---|
| Claude Fable 5.1 | 1,489 S |
| Claude Opus 5 | 1,489 S |
| Claude Opus 5.5 | 1,482 A |
| GPT-5.5 | 1,469 S |
| Claude Sonnet 5.5 | 1,470 A |
| GPT-6.1 Sol | 1,491 A |
| Claude Fable 5 | 1,489 S |
| GPT-6 Astra | 1,478 S |
Monthly snapshots are frozen on the 1st; the last point is the live month. Published snapshots: 1.