Claude Fable 5 vs GPT-5.5
The comparison
On LM Arena, Claude Fable 5 scores higher (1508 Elo vs 1482 Elo), from a smaller review base (15,817 vs 47,572 Arena votes).
As of Jul 27, 2026, Claude Fable 5 is rated 1508 Elo on LM Arena (15,817 Arena votes); GPT-5.5 is rated 1482 Elo on LM Arena (47,572 Arena votes). No source is blended; each stands on its own.
Claude Fable 5
1508 EloLM Arenahigher
15,817Arena votes
GPT-5.5
1482 EloLM Arena
47,572Arena voteslarger base