GLM 5.1 vs GPT-5.5
As of Oct 14, 2026, GLM 5.1 leads GPT-5.5 in 0 of 6 shared categories.
| Category | GLM 5.1 | GPT-5.5 |
|---|---|---|
| General LLM | #37 · #37 in General LLM Margin 25.17006802721089 LMArena leaderboard dataset · Oct 13, 2026 | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #36 · #36 in Reasoning Margin 25.342465753424662 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in Reasoning Margin 17.808219178082197 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 | #35 · #35 in Science Margin — Epoch AI benchmarking hub · Apr 7, 2026 | #30 · #30 in Science Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Apr 7, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #46 · Was SOTA · Coding › Web dev Margin 42.05607476635514 LMArena leaderboard dataset · Oct 13, 2026 | #44 · #44 in Coding › Web dev Margin 40.18691588785047 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #36 · Was SOTA · Long context Margin 24.48979591836735 LMArena leaderboard dataset · Oct 13, 2026 | #23 · Was SOTA · Long context Margin 15.646258503401356 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | — | #10 · Was SOTA · Vision Margin 28.94736842105263 Epoch AI benchmarking hub · Apr 23, 2026 |
| Factuality | #38 · #38 in Factuality Margin 29.104477611940297 LMArena leaderboard dataset · Oct 13, 2026 | #5 · Was SOTA · Factuality Margin 4.477611940298502 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
GLM 5.1: $2.0425 per 1M blended tokens.
GPT-5.5: $11.25 per 1M blended tokens.
GLM 5.1: open weights.
GPT-5.5: closed weights.
General LLM: As of Oct 14, 2026, GPT-5.5 leads GLM 5.1 in General LLM at #21 against #37.
Reasoning: As of Oct 14, 2026, GPT-5.5 leads GLM 5.1 in Reasoning at #25 against #36.
Science: As of Oct 14, 2026, GPT-5.5 leads GLM 5.1 in Science at #30 against #35.
Coding › Web dev: As of Oct 14, 2026, GPT-5.5 leads GLM 5.1 in Coding › Web dev at #44 against #46.
Long context: As of Oct 14, 2026, GPT-5.5 leads GLM 5.1 in Long context at #23 against #36.
Factuality: As of Oct 14, 2026, GPT-5.5 leads GLM 5.1 in Factuality at #5 against #38.
GLM 5.1 or GPT-5.5?
As of Oct 14, 2026, GLM 5.1 leads GPT-5.5 in 0 of 6 shared categories.
GLM 5.1 or GPT-5.5 for General LLM?
As of Oct 14, 2026, GPT-5.5 leads GLM 5.1 in General LLM at #21 against #37.
GLM 5.1 or GPT-5.5 for Reasoning?
As of Oct 14, 2026, GPT-5.5 leads GLM 5.1 in Reasoning at #25 against #36.
GLM 5.1 or GPT-5.5 for Science?
As of Oct 14, 2026, GPT-5.5 leads GLM 5.1 in Science at #30 against #35.