Claude Opus 5 vs GPT-6 Luna
As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in 10 of 10 shared categories: General LLM, Reasoning, Science, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Claude Opus 5
Close. Near-SOTA in Factuality, rank #4.
GPT-6 Luna
Yes. Yes on Coding (best per dollar); Coding › Agentic (best per dollar). Not the overall leader.
| Category | Claude Opus 5 | GPT-6 Luna |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #65 · #65 in General LLM Margin 44.21768707482993 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 6.849315068493155 LMArena leaderboard dataset · Oct 13, 2026 | #61 · #61 in Reasoning Margin 42.465753424657535 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 | #33 · #33 in Science Margin — Epoch AI benchmarking hub · Sep 22, 2026 |
| Coding | #4 · #4 in Coding Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #17 · #17 in Coding Margin 81.81818181818181 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #4 · #4 in Coding › Agentic Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #17 · #17 in Coding › Agentic Margin 81.81818181818181 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #6 · Was SOTA · Coding › Web dev Margin 4.672897196261687 LMArena leaderboard dataset · Oct 13, 2026 | #29 · #29 in Coding › Web dev Margin 26.168224299065415 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #9 · Was SOTA · Long context Margin 6.122448979591837 LMArena leaderboard dataset · Oct 13, 2026 | #61 · #61 in Long context Margin 41.49659863945578 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #12 · #12 in Vision Margin 36.8421052631579 Epoch AI benchmarking hub · Jul 24, 2026 | #17 · #17 in Vision Margin 47.36842105263158 Epoch AI benchmarking hub · Sep 22, 2026 |
| Factuality | #4 · Near-SOTA · Factuality Margin 3.731343283582092 LMArena leaderboard dataset · Oct 13, 2026 | #39 · #39 in Factuality Margin 29.85074626865672 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #22 · #22 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 |
Claude Opus 5: $10 per 1M blended tokens.
GPT-6 Luna: $0.19999999999999998 per 1M blended tokens.
Claude Opus 5: closed weights.
GPT-6 Luna: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in General LLM at #11 against #65.
Reasoning: As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in Reasoning at #9 against #61.
Science: As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in Science at #12 against #33.
Coding: As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in Coding at #4 against #17.
Coding › Agentic: As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in Coding › Agentic at #4 against #17.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in Coding › Web dev at #6 against #29.
Long context: As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in Long context at #9 against #61.
Vision: As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in Vision at #12 against #17.
Factuality: As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in Factuality at #4 against #39.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in Abstraction (ARC) at #3 against #22.
Claude Opus 5 or GPT-6 Luna?
As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in 10 of 10 shared categories: General LLM, Reasoning, Science, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Claude Opus 5 or GPT-6 Luna for General LLM?
As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in General LLM at #11 against #65.
Claude Opus 5 or GPT-6 Luna for Reasoning?
As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in Reasoning at #9 against #61.
Claude Opus 5 or GPT-6 Luna for Science?
As of Oct 14, 2026, Claude Opus 5 leads GPT-6 Luna in Science at #12 against #33.