Claude Opus 5.5 vs GPT-6.1 Sol
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-6.1 Sol in 7 of 10 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, and Factuality.
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-6.1 Sol
Yes. SOTA in co-SOTA in Vision.
| Category | Claude Opus 5.5 | GPT-6.1 Sol |
|---|---|---|
| General LLM | #2 · Near-SOTA · General LLM Margin 1.3605442176870781 LMArena leaderboard dataset · Oct 13, 2026 | #18 · #18 in General LLM Margin 12.244897959183675 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #1 · Co-SOTA · Reasoning Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #15 · #15 in Reasoning Margin 10.958904109589042 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 | #4 · #4 in Science Margin — Epoch AI benchmarking hub · Sep 29, 2026 |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #2 · Near-SOTA · Coding Margin 13.63636363636364 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #2 · Near-SOTA · Coding › Agentic Margin 13.63636363636364 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #1 · SOTA · Coding › Web dev Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #4 · Near-SOTA · Coding › Web dev Margin 2.803738317757009 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #1 · Co-SOTA · Long context Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #17 · #17 in Long context Margin 11.564625850340136 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #4 · Near-SOTA · Vision Margin 13.15789473684211 Epoch AI benchmarking hub · Sep 22, 2026 | #1 · Co-SOTA · Vision Margin 0 Epoch AI benchmarking hub · Sep 29, 2026 |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #29 · #29 in Factuality Margin 22.388059701492537 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 29, 2026 |
Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.
GPT-6.1 Sol: $4.000000000000001 per 1M blended tokens.
Claude Opus 5.5: closed weights.
GPT-6.1 Sol: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-6.1 Sol in General LLM at #2 against #18.
Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-6.1 Sol in Reasoning at #1 against #15.
Science: As of Oct 14, 2026, GPT-6.1 Sol leads Claude Opus 5.5 in Science at #4 against #31.
Coding: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-6.1 Sol in Coding at #1 against #2.
Coding › Agentic: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-6.1 Sol in Coding › Agentic at #1 against #2.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-6.1 Sol in Coding › Web dev at #1 against #4.
Long context: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-6.1 Sol in Long context at #1 against #17.
Vision: As of Oct 14, 2026, GPT-6.1 Sol leads Claude Opus 5.5 in Vision at #1 against #4.
Factuality: As of Oct 14, 2026, Claude Opus 5.5 leads GPT-6.1 Sol in Factuality at #1 against #29.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5.5 and GPT-6.1 Sol share #1 in Abstraction (ARC).
Claude Opus 5.5 or GPT-6.1 Sol?
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-6.1 Sol in 7 of 10 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, and Factuality.
Claude Opus 5.5 or GPT-6.1 Sol for General LLM?
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-6.1 Sol in General LLM at #2 against #18.
Claude Opus 5.5 or GPT-6.1 Sol for Reasoning?
As of Oct 14, 2026, Claude Opus 5.5 leads GPT-6.1 Sol in Reasoning at #1 against #15.
Claude Opus 5.5 or GPT-6.1 Sol for Science?
As of Oct 14, 2026, GPT-6.1 Sol leads Claude Opus 5.5 in Science at #4 against #31.