Claude Fable 5.1 versus Claude Opus 5
Neither strictly dominates the other on this workload.
| Claude Fable 5.1 | Claude Opus 5 | |
|---|---|---|
| LMArena | 1507.6 | 1504.9 |
| Document | 1512.6 | 1516.3 |
| Arena | 1507.6 | 1504.9 |
| Effective $/M | $20.00 | $10.00 |
| Context | 1M | 1M |
Questions this page answers
Is Claude Fable 5.1 both better and cheaper than Claude Opus 5?
Neither strictly dominates the other on this workload.
Does a missing score count as zero?
No. Unrated is not a score of zero. No quality bar is drawn for a missing score.