Claude Sonnet 5.5 vs GPT-5.4
As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 in 6 of 7 shared categories: General LLM, Reasoning, Math, Science, Coding › Web dev, and Long context.
Claude Sonnet 5.5
Yes. SOTA in co-SOTA in Coding, co-SOTA in Coding › Agentic and co-SOTA in Vision.
GPT-5.4
It used to be. Was SOTA in General LLM.
| Category | Claude Sonnet 5.5 | GPT-5.4 |
|---|---|---|
| General LLM | #27 · #27 in General LLM Margin 18.367346938775512 LMArena leaderboard dataset · Oct 13, 2026 | #28 · Was SOTA · General LLM Margin 19.04761904761905 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #18 · #18 in Reasoning Margin 13.013698630136986 LMArena leaderboard dataset · Oct 13, 2026 | #29 · #29 in Reasoning Margin 20.54794520547945 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #4 · #4 in Math Margin 6.666666666666671 Epoch AI benchmarking hub · Sep 28, 2026 | #9 · #9 in Math Margin 17.777777777777757 Epoch AI benchmarking hub · Mar 5, 2026 |
| Science | #3 · #3 in Science Margin — Epoch AI benchmarking hub · Sep 28, 2026 | #16 · #16 in Science Margin — Epoch AI benchmarking hub · Mar 5, 2026 |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Mar 5, 2026 |
| Coding › Agentic | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #3 · Near-SOTA · Coding › Web dev Margin 1.8691588785046775 LMArena leaderboard dataset · Oct 13, 2026 | #55 · #55 in Coding › Web dev Margin 50.467289719626166 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #11 · #11 in Long context Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #34 · #34 in Long context Margin 23.12925170068027 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #1 · Co-SOTA · Vision Margin 0 Epoch AI benchmarking hub · Sep 28, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #16 · #16 in Factuality Margin 12.68656716417911 LMArena leaderboard dataset · Oct 13, 2026 | #6 · Was SOTA · Factuality Margin 5.22388059701494 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #10 · #10 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Mar 5, 2026 |
Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.
GPT-5.4: $5.625 per 1M blended tokens.
Claude Sonnet 5.5: closed weights.
GPT-5.4: closed weights.
General LLM: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 in General LLM at #27 against #28.
Reasoning: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 in Reasoning at #18 against #29.
Math: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 in Math at #4 against #9.
Science: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 in Science at #3 against #16.
Coding › Web dev: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 in Coding › Web dev at #3 against #55.
Long context: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 in Long context at #11 against #34.
Factuality: As of Oct 14, 2026, GPT-5.4 leads Claude Sonnet 5.5 in Factuality at #6 against #16.
Claude Sonnet 5.5 or GPT-5.4?
As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 in 6 of 7 shared categories: General LLM, Reasoning, Math, Science, Coding › Web dev, and Long context.
Claude Sonnet 5.5 or GPT-5.4 for General LLM?
As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 in General LLM at #27 against #28.
Claude Sonnet 5.5 or GPT-5.4 for Reasoning?
As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 in Reasoning at #18 against #29.
Claude Sonnet 5.5 or GPT-5.4 for Math?
As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5.4 in Math at #4 against #9.