Claude Opus 5.5 vs GPT-5.4 Mini
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in 7 of 7 shared categories: General LLM, Reasoning, Science, Coding › Web dev, 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-5.4 Mini
#36 Best recorded rank: #36 in Abstraction (ARC), as of Oct 14, 2026.
| Category | Claude Opus 5.5 | GPT-5.4 Mini |
|---|---|---|
| General LLM | #2 · Near-SOTA · General LLM Margin 1.3605442176870781 LMArena leaderboard dataset · Oct 13, 2026 | #59 · #59 in General LLM Margin 40.136054421768705 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #1 · Co-SOTA · Reasoning Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #59 · #59 in Reasoning Margin 41.0958904109589 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #31 · #31 in Science Margin — Epoch AI benchmarking hub · Sep 22, 2026 | #52 · #52 in Science Margin — Epoch AI benchmarking hub · Mar 17, 2026 |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| 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 | #74 · #74 in Coding › Web dev Margin 68.22429906542055 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #1 · Co-SOTA · Long context Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #71 · #71 in Long context Margin 48.29931972789117 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 | #54 · #54 in Factuality Margin 41.04477611940298 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 | #36 · #36 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Mar 17, 2026 |
Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.
GPT-5.4 Mini: $1.6875 per 1M blended tokens.
Claude Opus 5.5: closed weights.
GPT-5.4 Mini: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in General LLM at #2 against #59.
Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Reasoning at #1 against #59.
Science: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Science at #31 against #52.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Coding › Web dev at #1 against #74.
Long context: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Long context at #1 against #71.
Factuality: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Factuality at #1 against #54.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Abstraction (ARC) at #1 against #36.
Claude Opus 5.5 · GPT-5.4 Mini
Claude Opus 5.5 or GPT-5.4 Mini?
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in 7 of 7 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
Claude Opus 5.5 or GPT-5.4 Mini for General LLM?
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in General LLM at #2 against #59.
Claude Opus 5.5 or GPT-5.4 Mini for Reasoning?
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Reasoning at #1 against #59.
Claude Opus 5.5 or GPT-5.4 Mini for Science?
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-5.4 Mini in Science at #31 against #52.