Claude Opus 5.5 vs GPT-4.1
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4.1 in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Opus 5.5
Yes. SOTA in co-SOTA in Reasoning, co-SOTA in Coding, co-SOTA in Coding › Agentic, Coding › Web dev, co-SOTA in Long context and co-SOTA in Factuality.
GPT-4.1
It used to be. Was SOTA in Long context.
| Category | Claude Opus 5.5 | GPT-4.1 |
|---|---|---|
| General LLM | #2 · Near-SOTA · General LLM Margin 1.3605442176870781 LMArena leaderboard dataset · Oct 13, 2026 | #101 · #101 in General LLM Margin 68.70748299319727 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #1 · Co-SOTA · Reasoning Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #102 · #102 in Reasoning Margin 70.54794520547945 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #39 · #39 in Math Margin 86.66666666666667 Epoch AI benchmarking hub · Apr 14, 2025 |
| Science | #31 · #31 in Science Margin — Epoch AI benchmarking hub · Sep 22, 2026 | #96 · #96 in Science Margin — Epoch AI benchmarking hub · Apr 14, 2025 |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Apr 14, 2025 |
| Coding › Agentic | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #1 · SOTA · Coding › Web dev Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #1 · Co-SOTA · Long context Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #95 · Was SOTA · Long context Margin 64.62585034013605 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #4 · Near-SOTA · Vision Margin 13.15789473684211 Epoch AI benchmarking hub · Sep 22, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #103 · #103 in Factuality Margin 77.61194029850746 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 | #85 · #85 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 14, 2025 |
Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.
GPT-4.1: $3.5 per 1M blended tokens.
Claude Opus 5.5: closed weights.
GPT-4.1: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4.1 in General LLM at #2 against #101.
Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4.1 in Reasoning at #1 against #102.
Science: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4.1 in Science at #31 against #96.
Long context: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4.1 in Long context at #1 against #95.
Factuality: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4.1 in Factuality at #1 against #103.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4.1 in Abstraction (ARC) at #1 against #85.
Claude Opus 5.5 or GPT-4.1?
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4.1 in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Opus 5.5 or GPT-4.1 for General LLM?
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4.1 in General LLM at #2 against #101.
Claude Opus 5.5 or GPT-4.1 for Reasoning?
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4.1 in Reasoning at #1 against #102.
Claude Opus 5.5 or GPT-4.1 for Science?
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-4.1 in Science at #31 against #96.