New entriesOctober 2, 2026Impact
Claude Sonnet 5.5 debuts at #3 on LMArena Code Agent
Claude Sonnet 5.5 appeared on the LMArena Code Agent leaderboard for the first time on Oct 2, 2026, placing #3 with +12.5 points.
Why it matters
New entries near the top of LMArena Code Agent move the Agentic Coding race on AIModelRace.
The details
- +12.5 points; early ratings carry wide confidence intervals and often move as votes accumulate.
Models in this story
Provenance: LMArena leaderboard published Oct 2, 2026; ratings from blind pairwise votes. Generated automatically from the published data. Sources: LMArena Code Agent leaderboard · LMArena leaderboard dataset (CC BY 4.0) See the race.