Claude Opus 4.8 vs GPT-5.1
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5.1 in 7 of 7 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
GPT-5.1
#18 Best current rank: #18 in Math, as of Oct 14, 2026.
| Category | Claude Opus 4.8 | GPT-5.1 |
|---|---|---|
| General LLM | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 | #47 · #47 in General LLM Margin 31.972789115646265 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #10 · #10 in Reasoning Margin 7.534246575342465 LMArena leaderboard dataset · Oct 13, 2026 | #48 · #48 in Reasoning Margin 33.56164383561644 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #18 · #18 in Math Margin 37.77777777777778 Epoch AI benchmarking hub · Nov 13, 2025 |
| Science | #27 · #27 in Science Margin — Epoch AI benchmarking hub · May 28, 2026 | #48 · #48 in Science Margin — Epoch AI benchmarking hub · Nov 13, 2025 |
| Coding | #12 · #12 in Coding Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Nov 13, 2025 |
| Coding › Agentic | #12 · #12 in Coding › Agentic Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #33 · Was SOTA · Coding › Web dev Margin 29.90654205607477 LMArena leaderboard dataset · Oct 13, 2026 | #75 · #75 in Coding › Web dev Margin 69.1588785046729 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #54 · #54 in Long context Margin 36.73469387755103 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #13 · #13 in Vision Margin 36.842105263157904 Epoch AI benchmarking hub · May 28, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #21 · #21 in Factuality Margin 16.417910447761187 LMArena leaderboard dataset · Oct 13, 2026 | #37 · #37 in Factuality Margin 28.358208955223887 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 | #31 · #31 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Nov 13, 2025 |
Claude Opus 4.8: $10 per 1M blended tokens.
GPT-5.1: $3.4375000000000004 per 1M blended tokens.
Claude Opus 4.8: closed weights.
GPT-5.1: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5.1 in General LLM at #20 against #47.
Reasoning: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5.1 in Reasoning at #10 against #48.
Science: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5.1 in Science at #27 against #48.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5.1 in Coding › Web dev at #33 against #75.
Long context: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5.1 in Long context at #10 against #54.
Factuality: As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5.1 in Factuality at #21 against #37.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5.1 in Abstraction (ARC) at #12 against #31.
Claude Opus 4.8 or GPT-5.1?
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5.1 in 7 of 7 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
Claude Opus 4.8 or GPT-5.1 for General LLM?
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5.1 in General LLM at #20 against #47.
Claude Opus 4.8 or GPT-5.1 for Reasoning?
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5.1 in Reasoning at #10 against #48.
Claude Opus 4.8 or GPT-5.1 for Science?
As of Oct 14, 2026, Claude Opus 4.8 leads GPT-5.1 in Science at #27 against #48.