GLM 5.3 Flash vs Grok 4.5
As of Oct 14, 2026, GLM 5.3 Flash leads Grok 4.5 in 7 of 10 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, and Abstraction (ARC).
GLM 5.3 Flash
Yes. Yes on Reasoning (best per dollar); Coding (best per dollar). Not the overall leader.
Grok 4.5
#14 Best recorded rank: #14 in Science, as of Oct 14, 2026.
| Category | GLM 5.3 Flash | Grok 4.5 |
|---|---|---|
| General LLM | #30 · #30 in General LLM Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 | #36 · #36 in General LLM Margin 24.48979591836735 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #26 · #26 in Reasoning Margin 18.493150684931507 LMArena leaderboard dataset · Oct 13, 2026 | #37 · #37 in Reasoning Margin 26.027397260273972 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 | #14 · #14 in Science Margin — Epoch AI benchmarking hub · Jul 8, 2026 |
| Coding | #10 · #10 in Coding Margin 50 Terminal-Bench Harbor Hub · Oct 6, 2026 | #19 · #19 in Coding Margin 95.45454545454545 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #10 · #10 in Coding › Agentic Margin 50 Terminal-Bench Harbor Hub · Oct 6, 2026 | #19 · #19 in Coding › Agentic Margin 95.45454545454545 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 | #34 · #34 in Coding › Web dev Margin 30.8411214953271 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #30 · #30 in Long context Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 | #35 · #35 in Long context Margin 23.80952380952381 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · Aug 20, 2026 | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · Jul 8, 2026 |
| Factuality | #30 · #30 in Factuality Margin 23.13432835820896 LMArena leaderboard dataset · Oct 13, 2026 | #26 · #26 in Factuality Margin 20.14925373134328 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #14 · #14 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 20, 2026 | #21 · #21 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 8, 2026 |
GLM 5.3 Flash: $0.2375 per 1M blended tokens.
Grok 4.5: $3 per 1M blended tokens.
GLM 5.3 Flash: open weights.
Grok 4.5: closed weights.
General LLM: As of Oct 14, 2026, GLM 5.3 Flash leads Grok 4.5 in General LLM at #30 against #36.
Reasoning: As of Oct 14, 2026, GLM 5.3 Flash leads Grok 4.5 in Reasoning at #26 against #37.
Science: As of Oct 14, 2026, Grok 4.5 leads GLM 5.3 Flash in Science at #14 against #34.
Coding: As of Oct 14, 2026, GLM 5.3 Flash leads Grok 4.5 in Coding at #10 against #19.
Coding › Agentic: As of Oct 14, 2026, GLM 5.3 Flash leads Grok 4.5 in Coding › Agentic at #10 against #19.
Coding › Web dev: As of Oct 14, 2026, GLM 5.3 Flash leads Grok 4.5 in Coding › Web dev at #22 against #34.
Long context: As of Oct 14, 2026, GLM 5.3 Flash leads Grok 4.5 in Long context at #30 against #35.
Vision: As of Oct 14, 2026, GLM 5.3 Flash and Grok 4.5 share #29 in Vision.
Factuality: As of Oct 14, 2026, Grok 4.5 leads GLM 5.3 Flash in Factuality at #26 against #30.
Abstraction (ARC): As of Oct 14, 2026, GLM 5.3 Flash leads Grok 4.5 in Abstraction (ARC) at #14 against #21.
GLM 5.3 Flash or Grok 4.5?
As of Oct 14, 2026, GLM 5.3 Flash leads Grok 4.5 in 7 of 10 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, and Abstraction (ARC).
GLM 5.3 Flash or Grok 4.5 for General LLM?
As of Oct 14, 2026, GLM 5.3 Flash leads Grok 4.5 in General LLM at #30 against #36.
GLM 5.3 Flash or Grok 4.5 for Reasoning?
As of Oct 14, 2026, GLM 5.3 Flash leads Grok 4.5 in Reasoning at #26 against #37.
GLM 5.3 Flash or Grok 4.5 for Science?
As of Oct 14, 2026, Grok 4.5 leads GLM 5.3 Flash in Science at #14 against #34.