Claude Sonnet 5.5 vs GPT-5.4 Nano
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.4 Nano in 5 of 5 shared categories: General LLM, Reasoning, Science, Long context, and Factuality.
Claude Sonnet 5.5
Yes. SOTA in co-SOTA in Coding, co-SOTA in Coding › Agentic and co-SOTA in Vision.
GPT-5.4 Nano
#43 Best recorded rank: #43 in Abstraction (ARC), as of Oct 15, 2026.
| Category | Claude Sonnet 5.5 | GPT-5.4 Nano |
|---|---|---|
| General LLM | #27 · #27 in General LLM Margin 18.367346938775512 LMArena leaderboard dataset · Oct 13, 2026 | #114 · #114 in General LLM Margin 77.55102040816327 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #18 · #18 in Reasoning Margin 13.013698630136986 LMArena leaderboard dataset · Oct 13, 2026 | #109 · #109 in Reasoning Margin 75.34246575342466 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #4 · #4 in Math Margin 6.666666666666671 Epoch AI benchmarking hub · Sep 28, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #3 · #3 in Science Margin — Epoch AI benchmarking hub · Sep 28, 2026 | #73 · #73 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 | #3 · Near-SOTA · Coding › Web dev Margin 1.8691588785046775 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #11 · #11 in Long context Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #120 · #120 in Long context Margin 81.63265306122449 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 | #98 · #98 in Factuality Margin 73.88059701492537 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #43 · #43 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Mar 17, 2026 |
Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.
GPT-5.4 Nano: $0.4625 per 1M blended tokens.
Claude Sonnet 5.5: closed weights.
GPT-5.4 Nano: closed weights.
General LLM: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.4 Nano in General LLM at #27 against #114.
Reasoning: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.4 Nano in Reasoning at #18 against #109.
Science: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.4 Nano in Science at #3 against #73.
Long context: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.4 Nano in Long context at #11 against #120.
Factuality: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.4 Nano in Factuality at #16 against #98.
Claude Sonnet 5.5 · GPT-5.4 Nano
Claude Sonnet 5.5 or GPT-5.4 Nano?
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.4 Nano in 5 of 5 shared categories: General LLM, Reasoning, Science, Long context, and Factuality.
Claude Sonnet 5.5 or GPT-5.4 Nano for General LLM?
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.4 Nano in General LLM at #27 against #114.
Claude Sonnet 5.5 or GPT-5.4 Nano for Reasoning?
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.4 Nano in Reasoning at #18 against #109.
Claude Sonnet 5.5 or GPT-5.4 Nano for Science?
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.4 Nano in Science at #3 against #73.