Claude Opus 4.5 vs GPT-5.4
As of Oct 15, 2026, Claude Opus 4.5 leads GPT-5.4 in 3 of 8 shared categories: Reasoning, Coding › Web dev, and Long context.
Claude Opus 4.5
It used to be. Was SOTA in Reasoning.
GPT-5.4
It used to be. Was SOTA in General LLM.
| Category | Claude Opus 4.5 | GPT-5.4 |
|---|---|---|
| General LLM | #41 · #41 in General LLM Margin 21.808510638297875 LMArena leaderboard dataset · Oct 13, 2026 | #30 · Was SOTA · General LLM Margin 15.957446808510639 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #30 · Was SOTA · Reasoning Margin 16.489361702127653 LMArena leaderboard dataset · Oct 13, 2026 | #32 · #32 in Reasoning Margin 17.55319148936171 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #16 · #16 in Math Margin 33.33333333333333 Epoch AI benchmarking hub · Nov 24, 2025 | #9 · #9 in Math Margin 17.777777777777757 Epoch AI benchmarking hub · Mar 5, 2026 |
| Science | #68 · #68 in Science Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #16 · #16 in Science Margin — Epoch AI benchmarking hub · Mar 5, 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 | #58 · Was SOTA · Coding › Web dev Margin 45.6 LMArena leaderboard dataset · Oct 13, 2026 | #60 · #60 in Coding › Web dev Margin 47.2 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #20 · Was SOTA · Long context Margin 10.63829787234043 LMArena leaderboard dataset · Oct 13, 2026 | #40 · #40 in Long context Margin 21.276595744680847 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | — | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #40 · #40 in Factuality Margin 23.837209302325576 LMArena leaderboard dataset · Oct 13, 2026 | #6 · Was SOTA · Factuality Margin 4.0697674418604635 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #49 · #49 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #10 · #10 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Mar 5, 2026 |
Claude Opus 4.5: $10 per 1M blended tokens.
GPT-5.4: $5.625 per 1M blended tokens.
Claude Opus 4.5: closed weights.
GPT-5.4: closed weights.
General LLM: As of Oct 15, 2026, GPT-5.4 leads Claude Opus 4.5 in General LLM at #30 against #41.
Reasoning: As of Oct 15, 2026, Claude Opus 4.5 leads GPT-5.4 in Reasoning at #30 against #32.
Math: As of Oct 15, 2026, GPT-5.4 leads Claude Opus 4.5 in Math at #9 against #16.
Science: As of Oct 15, 2026, GPT-5.4 leads Claude Opus 4.5 in Science at #16 against #68.
Coding › Web dev: As of Oct 15, 2026, Claude Opus 4.5 leads GPT-5.4 in Coding › Web dev at #58 against #60.
Long context: As of Oct 15, 2026, Claude Opus 4.5 leads GPT-5.4 in Long context at #20 against #40.
Factuality: As of Oct 15, 2026, GPT-5.4 leads Claude Opus 4.5 in Factuality at #6 against #40.
Abstraction (ARC): As of Oct 15, 2026, GPT-5.4 leads Claude Opus 4.5 in Abstraction (ARC) at #10 against #49.
Claude Opus 4.5 or GPT-5.4?
As of Oct 15, 2026, Claude Opus 4.5 leads GPT-5.4 in 3 of 8 shared categories: Reasoning, Coding › Web dev, and Long context.
Claude Opus 4.5 or GPT-5.4 for General LLM?
As of Oct 15, 2026, GPT-5.4 leads Claude Opus 4.5 in General LLM at #30 against #41.
Claude Opus 4.5 or GPT-5.4 for Reasoning?
As of Oct 15, 2026, Claude Opus 4.5 leads GPT-5.4 in Reasoning at #30 against #32.
Claude Opus 4.5 or GPT-5.4 for Math?
As of Oct 15, 2026, GPT-5.4 leads Claude Opus 4.5 in Math at #9 against #16.