Claude Opus 5 vs GPT-4.1
As of Oct 14, 2026, Claude Opus 5 leads GPT-4.1 in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Opus 5
Close. Near-SOTA in Factuality, rank #4.
GPT-4.1
It used to be. Was SOTA in Long context.
| Category | Claude Opus 5 | GPT-4.1 |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #101 · #101 in General LLM Margin 68.70748299319727 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 6.849315068493155 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 | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #96 · #96 in Science Margin — Epoch AI benchmarking hub · Apr 14, 2025 |
| Coding | #4 · #4 in Coding Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Apr 14, 2025 |
| Coding › Agentic | #4 · #4 in Coding › Agentic Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #6 · Was SOTA · Coding › Web dev Margin 4.672897196261687 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #9 · Was SOTA · Long context Margin 6.122448979591837 LMArena leaderboard dataset · Oct 13, 2026 | #95 · Was SOTA · Long context Margin 64.62585034013605 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #12 · #12 in Vision Margin 36.8421052631579 Epoch AI benchmarking hub · Jul 24, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #4 · Near-SOTA · Factuality Margin 3.731343283582092 LMArena leaderboard dataset · Oct 13, 2026 | #103 · #103 in Factuality Margin 77.61194029850746 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #85 · #85 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 14, 2025 |
Claude Opus 5: $10 per 1M blended tokens.
GPT-4.1: $3.5 per 1M blended tokens.
Claude Opus 5: closed weights.
GPT-4.1: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 5 leads GPT-4.1 in General LLM at #11 against #101.
Reasoning: As of Oct 14, 2026, Claude Opus 5 leads GPT-4.1 in Reasoning at #9 against #102.
Science: As of Oct 14, 2026, Claude Opus 5 leads GPT-4.1 in Science at #12 against #96.
Long context: As of Oct 14, 2026, Claude Opus 5 leads GPT-4.1 in Long context at #9 against #95.
Factuality: As of Oct 14, 2026, Claude Opus 5 leads GPT-4.1 in Factuality at #4 against #103.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5 leads GPT-4.1 in Abstraction (ARC) at #3 against #85.
Claude Opus 5 or GPT-4.1?
As of Oct 14, 2026, Claude Opus 5 leads GPT-4.1 in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Opus 5 or GPT-4.1 for General LLM?
As of Oct 14, 2026, Claude Opus 5 leads GPT-4.1 in General LLM at #11 against #101.
Claude Opus 5 or GPT-4.1 for Reasoning?
As of Oct 14, 2026, Claude Opus 5 leads GPT-4.1 in Reasoning at #9 against #102.
Claude Opus 5 or GPT-4.1 for Science?
As of Oct 14, 2026, Claude Opus 5 leads GPT-4.1 in Science at #12 against #96.