GLM 5.3 Flash vs GPT-6 Luna
As of Oct 14, 2026, GLM 5.3 Flash leads GPT-6 Luna in 8 of 10 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
GLM 5.3 Flash
Yes. Yes on Reasoning (best per dollar); Coding (best per dollar). Not the overall leader.
GPT-6 Luna
Yes. Yes on Coding (best per dollar); Coding › Agentic (best per dollar). Not the overall leader.
| Category | GLM 5.3 Flash | GPT-6 Luna |
|---|---|---|
| General LLM | #30 · #30 in General LLM Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 | #65 · #65 in General LLM Margin 44.21768707482993 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #26 · #26 in Reasoning Margin 18.493150684931507 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 | #34 · #34 in Science Margin — Epoch AI benchmarking hub · Aug 20, 2026 | #33 · #33 in Science Margin — Epoch AI benchmarking hub · Sep 22, 2026 |
| Coding | #10 · #10 in Coding Margin 50 Terminal-Bench Harbor Hub · Oct 6, 2026 | #17 · #17 in Coding Margin 81.81818181818181 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #10 · #10 in Coding › Agentic Margin 50 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 | #22 · #22 in Coding › Web dev Margin 19.626168224299064 LMArena leaderboard dataset · Oct 13, 2026 | #29 · #29 in Coding › Web dev Margin 26.168224299065415 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #30 · #30 in Long context Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 | #61 · #61 in Long context Margin 41.49659863945578 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · Aug 20, 2026 | #17 · #17 in Vision Margin 47.36842105263158 Epoch AI benchmarking hub · Sep 22, 2026 |
| Factuality | #30 · #30 in Factuality Margin 23.13432835820896 LMArena leaderboard dataset · Oct 13, 2026 | #39 · #39 in Factuality Margin 29.85074626865672 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #14 · #14 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 20, 2026 | #22 · #22 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 |
GLM 5.3 Flash: $0.2375 per 1M blended tokens.
GPT-6 Luna: $0.19999999999999998 per 1M blended tokens.
GLM 5.3 Flash: open weights.
GPT-6 Luna: closed weights.
General LLM: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-6 Luna in General LLM at #30 against #65.
Reasoning: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-6 Luna in Reasoning at #26 against #61.
Science: As of Oct 14, 2026, GPT-6 Luna leads GLM 5.3 Flash in Science at #33 against #34.
Coding: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-6 Luna in Coding at #10 against #17.
Coding › Agentic: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-6 Luna in Coding › Agentic at #10 against #17.
Coding › Web dev: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-6 Luna in Coding › Web dev at #22 against #29.
Long context: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-6 Luna in Long context at #30 against #61.
Vision: As of Oct 14, 2026, GPT-6 Luna leads GLM 5.3 Flash in Vision at #17 against #29.
Factuality: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-6 Luna in Factuality at #30 against #39.
Abstraction (ARC): As of Oct 14, 2026, GLM 5.3 Flash leads GPT-6 Luna in Abstraction (ARC) at #14 against #22.
GLM 5.3 Flash or GPT-6 Luna?
As of Oct 14, 2026, GLM 5.3 Flash leads GPT-6 Luna in 8 of 10 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
GLM 5.3 Flash or GPT-6 Luna for General LLM?
As of Oct 14, 2026, GLM 5.3 Flash leads GPT-6 Luna in General LLM at #30 against #65.
GLM 5.3 Flash or GPT-6 Luna for Reasoning?
As of Oct 14, 2026, GLM 5.3 Flash leads GPT-6 Luna in Reasoning at #26 against #61.
GLM 5.3 Flash or GPT-6 Luna for Science?
As of Oct 14, 2026, GPT-6 Luna leads GLM 5.3 Flash in Science at #33 against #34.