Claude Opus 4 vs GPT-5.5
As of Oct 14, 2026, Claude Opus 4 leads GPT-5.5 in 0 of 5 shared categories.
| Category | Claude Opus 4 | GPT-5.5 |
|---|---|---|
| General LLM | #102 · #102 in General LLM Margin 69.38775510204081 LMArena leaderboard dataset · Oct 13, 2026 | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #97 · Was SOTA · Reasoning Margin 67.12328767123287 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in Reasoning Margin 17.808219178082197 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #29 · #29 in Math Margin 62.22222222222222 Epoch AI benchmarking hub · May 22, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #91 · #91 in Science Margin — Epoch AI benchmarking hub · May 22, 2025 | #30 · #30 in Science Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · May 22, 2025 | #— · 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 | #70 · #70 in Long context Margin 47.61904761904762 LMArena leaderboard dataset · Oct 13, 2026 | #23 · Was SOTA · Long context Margin 15.646258503401356 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #10 · Was SOTA · Vision Margin 28.94736842105263 Epoch AI benchmarking hub · Apr 23, 2026 |
| Factuality | — | #5 · Was SOTA · Factuality Margin 4.477611940298502 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #69 · #69 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 22, 2025 | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
Claude Opus 4: price per 1M tokens is unset in the catalog.
GPT-5.5: $11.25 per 1M blended tokens.
Claude Opus 4: closed weights.
GPT-5.5: closed weights.
General LLM: As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4 in General LLM at #21 against #102.
Reasoning: As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4 in Reasoning at #25 against #97.
Science: As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4 in Science at #30 against #91.
Long context: As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4 in Long context at #23 against #70.
Abstraction (ARC): As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4 in Abstraction (ARC) at #7 against #69.
Claude Opus 4 or GPT-5.5?
As of Oct 14, 2026, Claude Opus 4 leads GPT-5.5 in 0 of 5 shared categories.
Claude Opus 4 or GPT-5.5 for General LLM?
As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4 in General LLM at #21 against #102.
Claude Opus 4 or GPT-5.5 for Reasoning?
As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4 in Reasoning at #25 against #97.
Claude Opus 4 or GPT-5.5 for Science?
As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4 in Science at #30 against #91.