New entriesSeptember 25, 2026Impact
Claude Opus 5.5 debuts at #1 on LMArena Text · Multi-Turn
Claude Opus 5.5 appeared on the LMArena Text · Multi-Turn leaderboard for the first time on Sep 25, 2026, placing #1 with 1520.
Why it matters
New entries near the top of LMArena Text · Multi-Turn move the Conversation race on AIModelRace.
The details
- 1520 from 285 votes; early ratings carry wide confidence intervals and often move as votes accumulate.
Models in this story
Provenance: LMArena leaderboard published Sep 25, 2026; ratings from blind pairwise votes. Generated automatically from the published data. Sources: LMArena Text · Multi-Turn leaderboard · LMArena leaderboard dataset (CC BY 4.0) See the race.