Leaderboard / Model
Claude Opus 5.5
Anthropic · Closed weights · Released Sep 22, 2026 · $4 in · $20 out per 1M tokens
n/aOverall · not enough data
Score by job
Coding
Not enough data · 0 of 5 benchmarks
Agents
Not enough data · 0 of 4 benchmarks
Reasoning
Not enough data · 0 of 4 benchmarks
Math
Not enough data · 0 of 5 benchmarks
Writing
Not enough data · 0 of 2 benchmarks
Design
100 · rank 1 · 1 of 1 benchmarks
| Benchmark | Result | Variant | z |
|---|---|---|---|
| LMArena WebDev | 1818 rating | claude-opus-5.5-max | 2.58 |