Claude Opus 5 vs GPT-5.6 Sol
As of Oct 15, 2026, Claude Opus 5 leads GPT-5.6 Sol in 8 of 10 shared categories: General LLM, Reasoning, Science, Coding, Coding › Agentic, Coding › Web dev, Long context, and Factuality.
Claude Opus 5
Close. Near-SOTA in Factuality, rank #4.
GPT-5.6 Sol
Close. Near-SOTA in Vision, rank #3.
| Category | Claude Opus 5 | GPT-5.6 Sol |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 5.851063829787236 LMArena leaderboard dataset · Oct 13, 2026 | #17 · #17 in General LLM Margin 9.042553191489361 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 5.319148936170208 LMArena leaderboard dataset · Oct 13, 2026 | #12 · #12 in Reasoning Margin 6.914893617021278 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 | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #13 · #13 in Science Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
| Coding | #4 · #4 in Coding Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #9 · #9 in Coding Margin 45.45454545454545 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #4 · #4 in Coding › Agentic Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #9 · #9 in Coding › Agentic Margin 45.45454545454545 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #6 · Near-SOTA · Coding › Web dev Margin 4 LMArena leaderboard dataset · Oct 13, 2026 | #23 · Was SOTA · Coding › Web dev Margin 17.599999999999994 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #9 · Was SOTA · Long context Margin 4.7872340425531945 LMArena leaderboard dataset · Oct 13, 2026 | #13 · #13 in Long context Margin 6.914893617021278 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #12 · #12 in Vision Margin 36.8421052631579 Epoch AI benchmarking hub · Jul 24, 2026 | #3 · Near-SOTA · Vision Margin 10.526315789473685 Epoch AI benchmarking hub · Jul 9, 2026 |
| Factuality | #4 · Near-SOTA · Factuality Margin 2.9069767441860535 LMArena leaderboard dataset · Oct 13, 2026 | #15 · #15 in Factuality Margin 9.302325581395351 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
Claude Opus 5: $10 per 1M blended tokens.
GPT-5.6 Sol: $8.000000000000002 per 1M blended tokens.
Claude Opus 5: closed weights.
GPT-5.6 Sol: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 5 leads GPT-5.6 Sol in General LLM at #11 against #17.
Reasoning: As of Oct 15, 2026, Claude Opus 5 leads GPT-5.6 Sol in Reasoning at #9 against #12.
Science: As of Oct 15, 2026, Claude Opus 5 leads GPT-5.6 Sol in Science at #12 against #13.
Coding: As of Oct 15, 2026, Claude Opus 5 leads GPT-5.6 Sol in Coding at #4 against #9.
Coding › Agentic: As of Oct 15, 2026, Claude Opus 5 leads GPT-5.6 Sol in Coding › Agentic at #4 against #9.
Coding › Web dev: As of Oct 15, 2026, Claude Opus 5 leads GPT-5.6 Sol in Coding › Web dev at #6 against #23.
Long context: As of Oct 15, 2026, Claude Opus 5 leads GPT-5.6 Sol in Long context at #9 against #13.
Vision: As of Oct 15, 2026, GPT-5.6 Sol leads Claude Opus 5 in Vision at #3 against #12.
Factuality: As of Oct 15, 2026, Claude Opus 5 leads GPT-5.6 Sol in Factuality at #4 against #15.
Abstraction (ARC): As of Oct 15, 2026, Claude Opus 5 and GPT-5.6 Sol share #3 in Abstraction (ARC).
Claude Opus 5 or GPT-5.6 Sol?
As of Oct 15, 2026, Claude Opus 5 leads GPT-5.6 Sol in 8 of 10 shared categories: General LLM, Reasoning, Science, Coding, Coding › Agentic, Coding › Web dev, Long context, and Factuality.
Claude Opus 5 or GPT-5.6 Sol for General LLM?
As of Oct 15, 2026, Claude Opus 5 leads GPT-5.6 Sol in General LLM at #11 against #17.
Claude Opus 5 or GPT-5.6 Sol for Reasoning?
As of Oct 15, 2026, Claude Opus 5 leads GPT-5.6 Sol in Reasoning at #9 against #12.
Claude Opus 5 or GPT-5.6 Sol for Science?
As of Oct 15, 2026, Claude Opus 5 leads GPT-5.6 Sol in Science at #12 against #13.