Claude Sonnet 5.5 vs GPT-5.2
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.2 in 7 of 7 shared categories: General LLM, Reasoning, Math, Science, Coding › Web dev, 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-5.2
#14 Best current rank: #14 in Math, as of Oct 15, 2026.
| Category | Claude Sonnet 5.5 | GPT-5.2 |
|---|---|---|
| General LLM | #29 · #29 in General LLM Margin 15.425531914893611 LMArena leaderboard dataset · Oct 13, 2026 | #92 · #92 in General LLM Margin 48.93617021276596 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #18 · #18 in Reasoning Margin 10.106382978723403 LMArena leaderboard dataset · Oct 13, 2026 | #88 · #88 in Reasoning Margin 47.340425531914896 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #4 · #4 in Math Margin 6.666666666666671 Epoch AI benchmarking hub · Sep 28, 2026 | #14 · #14 in Math Margin 28.888888888888886 Epoch AI benchmarking hub · Dec 11, 2025 |
| Science | #3 · #3 in Science Margin — Epoch AI benchmarking hub · Sep 28, 2026 | #26 · #26 in Science Margin — Epoch AI benchmarking hub · Dec 11, 2025 |
| 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 1.5999999999999943 LMArena leaderboard dataset · Oct 13, 2026 | #73 · #73 in Coding › Web dev Margin 57.6 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #11 · #11 in Long context Margin 5.851063829787236 LMArena leaderboard dataset · Oct 13, 2026 | #100 · #100 in Long context Margin 53.19148936170212 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 | #17 · #17 in Factuality Margin 10.465116279069761 LMArena leaderboard dataset · Oct 13, 2026 | #79 · #79 in Factuality Margin 46.51162790697674 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #24 · #24 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Dec 11, 2025 |
Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.
GPT-5.2: $4.8125 per 1M blended tokens.
Claude Sonnet 5.5: closed weights.
GPT-5.2: closed weights.
General LLM: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.2 in General LLM at #29 against #92.
Reasoning: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.2 in Reasoning at #18 against #88.
Math: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.2 in Math at #4 against #14.
Science: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.2 in Science at #3 against #26.
Coding › Web dev: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.2 in Coding › Web dev at #3 against #73.
Long context: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.2 in Long context at #11 against #100.
Factuality: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.2 in Factuality at #17 against #79.
Claude Sonnet 5.5 or GPT-5.2?
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.2 in 7 of 7 shared categories: General LLM, Reasoning, Math, Science, Coding › Web dev, Long context, and Factuality.
Claude Sonnet 5.5 or GPT-5.2 for General LLM?
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.2 in General LLM at #29 against #92.
Claude Sonnet 5.5 or GPT-5.2 for Reasoning?
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.2 in Reasoning at #18 against #88.
Claude Sonnet 5.5 or GPT-5.2 for Math?
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5.2 in Math at #4 against #14.