Claude Opus 4.7 vs GPT-5.5
As of Oct 15, 2026, Claude Opus 4.7 leads GPT-5.5 in 4 of 8 shared categories: General LLM, Reasoning, Coding › Web dev, and Long context.
Claude Opus 4.7
Close. Near-SOTA in Reasoning, rank #4.
GPT-5.5
Close. Near-SOTA in Factuality, rank #5.
| Category | Claude Opus 4.7 | GPT-5.5 |
|---|---|---|
| General LLM | #5 · Near-SOTA · General LLM Margin 2.659574468085111 LMArena leaderboard dataset · Oct 13, 2026 | #22 · Was SOTA · General LLM Margin 11.702127659574472 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #4 · Near-SOTA · Reasoning Margin 2.659574468085111 LMArena leaderboard dataset · Oct 13, 2026 | #26 · #26 in Reasoning Margin 14.36170212765957 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #10 · #10 in Math Margin 20 Epoch AI benchmarking hub · Apr 16, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #34 · #34 in Science Margin — Epoch AI benchmarking hub · Apr 16, 2026 | #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 | #34 · Was SOTA · Coding › Web dev Margin 26.400000000000006 LMArena leaderboard dataset · Oct 13, 2026 | #48 · #48 in Coding › Web dev Margin 37.6 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #4 · Near-SOTA · Long context Margin 2.1276595744680833 LMArena leaderboard dataset · Oct 13, 2026 | #26 · Was SOTA · Long context Margin 13.829787234042556 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #20 · Was SOTA · Vision Margin 55.26315789473684 Epoch AI benchmarking hub · Apr 16, 2026 | #10 · Was SOTA · Vision Margin 28.94736842105263 Epoch AI benchmarking hub · Apr 23, 2026 |
| Factuality | #13 · #13 in Factuality Margin 8.139534883720927 LMArena leaderboard dataset · Oct 13, 2026 | #5 · Near-SOTA · Factuality Margin 3.4883720930232442 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #11 · #11 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 16, 2026 | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
Claude Opus 4.7: $10 per 1M blended tokens.
GPT-5.5: $11.25 per 1M blended tokens.
Claude Opus 4.7: closed weights.
GPT-5.5: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 4.7 leads GPT-5.5 in General LLM at #5 against #22.
Reasoning: As of Oct 15, 2026, Claude Opus 4.7 leads GPT-5.5 in Reasoning at #4 against #26.
Science: As of Oct 15, 2026, GPT-5.5 leads Claude Opus 4.7 in Science at #30 against #34.
Coding › Web dev: As of Oct 15, 2026, Claude Opus 4.7 leads GPT-5.5 in Coding › Web dev at #34 against #48.
Long context: As of Oct 15, 2026, Claude Opus 4.7 leads GPT-5.5 in Long context at #4 against #26.
Vision: As of Oct 15, 2026, GPT-5.5 leads Claude Opus 4.7 in Vision at #10 against #20.
Factuality: As of Oct 15, 2026, GPT-5.5 leads Claude Opus 4.7 in Factuality at #5 against #13.
Abstraction (ARC): As of Oct 15, 2026, GPT-5.5 leads Claude Opus 4.7 in Abstraction (ARC) at #7 against #11.
Claude Opus 4.7 or GPT-5.5?
As of Oct 15, 2026, Claude Opus 4.7 leads GPT-5.5 in 4 of 8 shared categories: General LLM, Reasoning, Coding › Web dev, and Long context.
Claude Opus 4.7 or GPT-5.5 for General LLM?
As of Oct 15, 2026, Claude Opus 4.7 leads GPT-5.5 in General LLM at #5 against #22.
Claude Opus 4.7 or GPT-5.5 for Reasoning?
As of Oct 15, 2026, Claude Opus 4.7 leads GPT-5.5 in Reasoning at #4 against #26.
Claude Opus 4.7 or GPT-5.5 for Science?
As of Oct 15, 2026, GPT-5.5 leads Claude Opus 4.7 in Science at #30 against #34.