Claude Opus 4.5 20251101 vs GPT-5.5
As of Oct 14, 2026, Claude Opus 4.5 20251101 leads GPT-5.5 in 0 of 2 shared categories.
Claude Opus 4.5 20251101
#27 Best recorded rank: #27 in Abstraction (ARC), as of Oct 14, 2026.
GPT-5.5
It used to be. Was SOTA in General LLM.
| Category | Claude Opus 4.5 20251101 | GPT-5.5 |
|---|---|---|
| General LLM | — | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #— · Not enough data Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #25 · #25 in Reasoning Margin 17.808219178082197 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | — | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #55 · #55 in Science Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #30 · #30 in Science Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
| Coding | — | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | — | #44 · #44 in Coding › Web dev Margin 40.18691588785047 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | — | #23 · Was SOTA · Long context Margin 15.646258503401356 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | — | #10 · Was SOTA · Vision Margin 28.94736842105263 Epoch AI benchmarking hub · Apr 23, 2026 |
| Factuality | #— · Not enough data Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #5 · Was SOTA · Factuality Margin 4.477611940298502 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #27 · #27 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
Claude Opus 4.5 20251101: price per 1M tokens is unset in the catalog.
GPT-5.5: $11.25 per 1M blended tokens.
Claude Opus 4.5 20251101: closed weights.
GPT-5.5: closed weights.
Science: As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4.5 20251101 in Science at #30 against #55.
Abstraction (ARC): As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4.5 20251101 in Abstraction (ARC) at #7 against #27.
Claude Opus 4.5 20251101 · GPT-5.5
Claude Opus 4.5 20251101 or GPT-5.5?
As of Oct 14, 2026, Claude Opus 4.5 20251101 leads GPT-5.5 in 0 of 2 shared categories.
Claude Opus 4.5 20251101 or GPT-5.5 for Science?
As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4.5 20251101 in Science at #30 against #55.
Claude Opus 4.5 20251101 or GPT-5.5 for Abstraction (ARC)?
As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4.5 20251101 in Abstraction (ARC) at #7 against #27.