GLM 5.3 Flash vs GPT-5.6 Terra
As of Oct 14, 2026, GLM 5.3 Flash leads GPT-5.6 Terra in 6 of 10 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, and Long context.
GLM 5.3 Flash
Yes. Yes on Coding (best per dollar); Coding › Agentic (best per dollar). Not the overall leader.
GPT-5.6 Terra
#4 Best recorded rank: #4 in Abstraction (ARC), as of Oct 14, 2026.
| Category | GLM 5.3 Flash | GPT-5.6 Terra |
|---|---|---|
| General LLM | #30 · #30 in General LLM Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 | #35 · #35 in General LLM Margin 23.80952380952381 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #26 · #26 in Reasoning Margin 18.493150684931507 LMArena leaderboard dataset · Oct 13, 2026 | #35 · #35 in Reasoning Margin 24.657534246575338 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 | #15 · #15 in Science Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
| Coding | #10 · #10 in Coding Margin 50 Terminal-Bench Harbor Hub · Oct 6, 2026 | #13 · #13 in Coding Margin 63.63636363636363 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #10 · #10 in Coding › Agentic Margin 50 Terminal-Bench Harbor Hub · Oct 6, 2026 | #13 · #13 in Coding › Agentic Margin 63.63636363636363 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 | #42 · #42 in Coding › Web dev Margin 38.3177570093458 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #30 · #30 in Long context Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 | #46 · #46 in Long context Margin 31.292517006802726 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · Aug 20, 2026 | #11 · #11 in Vision Margin 31.578947368421055 Epoch AI benchmarking hub · Jul 9, 2026 |
| Factuality | #30 · #30 in Factuality Margin 23.13432835820896 LMArena leaderboard dataset · Oct 13, 2026 | #24 · #24 in Factuality Margin 18.656716417910445 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #14 · #14 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 20, 2026 | #4 · #4 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
GLM 5.3 Flash: $0.2375 per 1M blended tokens.
GPT-5.6 Terra: $4.5 per 1M blended tokens.
GLM 5.3 Flash: open weights.
GPT-5.6 Terra: closed weights.
General LLM: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-5.6 Terra in General LLM at #30 against #35.
Reasoning: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-5.6 Terra in Reasoning at #26 against #35.
Science: As of Oct 14, 2026, GPT-5.6 Terra leads GLM 5.3 Flash in Science at #15 against #34.
Coding: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-5.6 Terra in Coding at #10 against #13.
Coding › Agentic: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-5.6 Terra in Coding › Agentic at #10 against #13.
Coding › Web dev: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-5.6 Terra in Coding › Web dev at #22 against #42.
Long context: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-5.6 Terra in Long context at #30 against #46.
Vision: As of Oct 14, 2026, GPT-5.6 Terra leads GLM 5.3 Flash in Vision at #11 against #29.
Factuality: As of Oct 14, 2026, GPT-5.6 Terra leads GLM 5.3 Flash in Factuality at #24 against #30.
Abstraction (ARC): As of Oct 14, 2026, GPT-5.6 Terra leads GLM 5.3 Flash in Abstraction (ARC) at #4 against #14.
GLM 5.3 Flash or GPT-5.6 Terra?
As of Oct 14, 2026, GLM 5.3 Flash leads GPT-5.6 Terra in 6 of 10 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, and Long context.
GLM 5.3 Flash or GPT-5.6 Terra for General LLM?
As of Oct 14, 2026, GLM 5.3 Flash leads GPT-5.6 Terra in General LLM at #30 against #35.
GLM 5.3 Flash or GPT-5.6 Terra for Reasoning?
As of Oct 14, 2026, GLM 5.3 Flash leads GPT-5.6 Terra in Reasoning at #26 against #35.
GLM 5.3 Flash or GPT-5.6 Terra for Science?
As of Oct 14, 2026, GPT-5.6 Terra leads GLM 5.3 Flash in Science at #15 against #34.