Claude Sonnet 4 vs GPT-5.5
As of Oct 14, 2026, Claude Sonnet 4 leads GPT-5.5 in 0 of 5 shared categories.
Claude Sonnet 4
#35 Best current rank: #35 in Math, as of Oct 14, 2026.
GPT-5.5
It used to be. Was SOTA in General LLM.
| Category | Claude Sonnet 4 | GPT-5.5 |
|---|---|---|
| General LLM | #126 · #126 in General LLM Margin 85.71428571428571 LMArena leaderboard dataset · Oct 13, 2026 | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #115 · #115 in Reasoning Margin 79.45205479452055 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in Reasoning Margin 17.808219178082197 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #35 · #35 in Math Margin 77.77777777777777 Epoch AI benchmarking hub · May 22, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #97 · #97 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 — LMArena leaderboard dataset · Oct 13, 2026 | #— · 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 | #94 · #94 in Long context Margin 63.945578231292515 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) | #67 · #67 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 Sonnet 4: $6 per 1M blended tokens.
GPT-5.5: $11.25 per 1M blended tokens.
Claude Sonnet 4: closed weights.
GPT-5.5: closed weights.
General LLM: As of Oct 14, 2026, GPT-5.5 leads Claude Sonnet 4 in General LLM at #21 against #126.
Reasoning: As of Oct 14, 2026, GPT-5.5 leads Claude Sonnet 4 in Reasoning at #25 against #115.
Science: As of Oct 14, 2026, GPT-5.5 leads Claude Sonnet 4 in Science at #30 against #97.
Long context: As of Oct 14, 2026, GPT-5.5 leads Claude Sonnet 4 in Long context at #23 against #94.
Abstraction (ARC): As of Oct 14, 2026, GPT-5.5 leads Claude Sonnet 4 in Abstraction (ARC) at #7 against #67.
Claude Sonnet 4 or GPT-5.5?
As of Oct 14, 2026, Claude Sonnet 4 leads GPT-5.5 in 0 of 5 shared categories.
Claude Sonnet 4 or GPT-5.5 for General LLM?
As of Oct 14, 2026, GPT-5.5 leads Claude Sonnet 4 in General LLM at #21 against #126.
Claude Sonnet 4 or GPT-5.5 for Reasoning?
As of Oct 14, 2026, GPT-5.5 leads Claude Sonnet 4 in Reasoning at #25 against #115.
Claude Sonnet 4 or GPT-5.5 for Science?
As of Oct 14, 2026, GPT-5.5 leads Claude Sonnet 4 in Science at #30 against #97.