Claude Opus 4.1 vs GPT-5.5
As of Oct 14, 2026, Claude Opus 4.1 leads GPT-5.5 in 0 of 6 shared categories.
Claude Opus 4.1
It used to be. Was SOTA in General LLM.
GPT-5.5
It used to be. Was SOTA in General LLM.
| Category | Claude Opus 4.1 | GPT-5.5 |
|---|---|---|
| General LLM | #57 · Was SOTA · General LLM Margin 38.775510204081634 LMArena leaderboard dataset · Oct 13, 2026 | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #47 · Was SOTA · Reasoning Margin 32.87671232876713 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in Reasoning Margin 17.808219178082197 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #27 · #27 in Math Margin 57.77777777777778 Epoch AI benchmarking hub · Aug 5, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #83 · #83 in Science Margin — Epoch AI benchmarking hub · Aug 5, 2025 | #30 · #30 in Science Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Aug 5, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #76 · Was SOTA · Coding › Web dev Margin 70.09345794392523 LMArena leaderboard dataset · Oct 13, 2026 | #44 · #44 in Coding › Web dev Margin 40.18691588785047 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #44 · Was SOTA · Long context Margin 29.931972789115648 LMArena leaderboard dataset · Oct 13, 2026 | #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 | #74 · #74 in Factuality Margin 55.97014925373134 LMArena leaderboard dataset · Oct 13, 2026 | #5 · Was SOTA · Factuality Margin 4.477611940298502 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
Claude Opus 4.1: $29.999999999999996 per 1M blended tokens.
GPT-5.5: $11.25 per 1M blended tokens.
Claude Opus 4.1: closed weights.
GPT-5.5: closed weights.
General LLM: As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4.1 in General LLM at #21 against #57.
Reasoning: As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4.1 in Reasoning at #25 against #47.
Science: As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4.1 in Science at #30 against #83.
Coding › Web dev: As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4.1 in Coding › Web dev at #44 against #76.
Long context: As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4.1 in Long context at #23 against #44.
Factuality: As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4.1 in Factuality at #5 against #74.
Claude Opus 4.1 or GPT-5.5?
As of Oct 14, 2026, Claude Opus 4.1 leads GPT-5.5 in 0 of 6 shared categories.
Claude Opus 4.1 or GPT-5.5 for General LLM?
As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4.1 in General LLM at #21 against #57.
Claude Opus 4.1 or GPT-5.5 for Reasoning?
As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4.1 in Reasoning at #25 against #47.
Claude Opus 4.1 or GPT-5.5 for Science?
As of Oct 14, 2026, GPT-5.5 leads Claude Opus 4.1 in Science at #30 against #83.