Claude Sonnet 5.5 vs GPT-6 Sol
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in 9 of 9 shared categories: General LLM, Reasoning, Science, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, and Factuality.
Claude Sonnet 5.5
Yes. SOTA in Coding (tied), Coding › Agentic (tied), and Vision (tied).
GPT-6 Sol
#5 Best current rank: #5 in Coding, as of Oct 15, 2026.
| Category | Claude Sonnet 5.5 | GPT-6 Sol |
|---|---|---|
| General LLM | #29 · #29 in General LLM Margin 15.425531914893611 LMArena leaderboard dataset · Oct 13, 2026 | #54 · #54 in General LLM Margin 28.723404255319153 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #18 · #18 in Reasoning Margin 10.106382978723403 LMArena leaderboard dataset · Oct 13, 2026 | #49 · #49 in Reasoning Margin 26.59574468085107 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 | #8 · #8 in Science Margin — Epoch AI benchmarking hub · Sep 22, 2026 |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #5 · #5 in Coding Margin 27.272727272727266 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #5 · #5 in Coding › Agentic Margin 27.272727272727266 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 | #7 · #7 in Coding › Web dev Margin 4.799999999999997 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #11 · #11 in Long context Margin 5.851063829787236 LMArena leaderboard dataset · Oct 13, 2026 | #57 · #57 in Long context Margin 30.31914893617021 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #1 · Co-SOTA · Vision Margin 0 Epoch AI benchmarking hub · Sep 28, 2026 | #9 · #9 in Vision Margin 26.315789473684205 Epoch AI benchmarking hub · Sep 22, 2026 |
| Factuality | #17 · #17 in Factuality Margin 10.465116279069761 LMArena leaderboard dataset · Oct 13, 2026 | #88 · #88 in Factuality Margin 51.74418604651162 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #6 · #6 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 |
Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.
GPT-6 Sol: $4.000000000000001 per 1M blended tokens.
Claude Sonnet 5.5: closed weights.
GPT-6 Sol: closed weights.
General LLM: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in General LLM at #29 against #54.
Reasoning: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in Reasoning at #18 against #49.
Science: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in Science at #3 against #8.
Coding: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in Coding at #1 against #5.
Coding › Agentic: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in Coding › Agentic at #1 against #5.
Coding › Web dev: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in Coding › Web dev at #3 against #7.
Long context: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in Long context at #11 against #57.
Vision: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in Vision at #1 against #9.
Factuality: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in Factuality at #17 against #88.
Claude Sonnet 5.5 or GPT-6 Sol?
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in 9 of 9 shared categories: General LLM, Reasoning, Science, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, and Factuality.
Claude Sonnet 5.5 or GPT-6 Sol for General LLM?
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in General LLM at #29 against #54.
Claude Sonnet 5.5 or GPT-6 Sol for Reasoning?
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in Reasoning at #18 against #49.
Claude Sonnet 5.5 or GPT-6 Sol for Science?
As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-6 Sol in Science at #3 against #8.