Claude Opus 5 vs GLM 4.5 Air
As of Oct 14, 2026, Claude Opus 5 leads GLM 4.5 Air in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 5
Close. Near-SOTA in Factuality, rank #4.
GLM 4.5 Air
#32 Best current rank: #32 in Math, as of Oct 14, 2026.
| Category | Claude Opus 5 | GLM 4.5 Air |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #142 · #142 in General LLM Margin 96.59863945578232 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 6.849315068493155 LMArena leaderboard dataset · Oct 13, 2026 | #140 · #140 in Reasoning Margin 96.57534246575342 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #32 · #32 in Math Margin 71.11111111111111 Epoch AI benchmarking hub · Jul 20, 2025 |
| Science | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 | — |
| Coding | #4 · #4 in Coding Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #4 · #4 in Coding › Agentic Margin 22.727272727272734 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 | — |
| Long context | #9 · Was SOTA · Long context Margin 6.122448979591837 LMArena leaderboard dataset · Oct 13, 2026 | #138 · #138 in Long context Margin 93.87755102040816 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #12 · #12 in Vision Margin 36.8421052631579 Epoch AI benchmarking hub · Jul 24, 2026 | — |
| Factuality | #4 · Near-SOTA · Factuality Margin 3.731343283582092 LMArena leaderboard dataset · Oct 13, 2026 | #109 · #109 in Factuality Margin 82.08955223880596 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 | — |
Claude Opus 5: $10 per 1M blended tokens.
GLM 4.5 Air: $0.31 per 1M blended tokens.
Claude Opus 5: closed weights.
GLM 4.5 Air: open weights.
General LLM: As of Oct 14, 2026, Claude Opus 5 leads GLM 4.5 Air in General LLM at #11 against #142.
Reasoning: As of Oct 14, 2026, Claude Opus 5 leads GLM 4.5 Air in Reasoning at #9 against #140.
Long context: As of Oct 14, 2026, Claude Opus 5 leads GLM 4.5 Air in Long context at #9 against #138.
Factuality: As of Oct 14, 2026, Claude Opus 5 leads GLM 4.5 Air in Factuality at #4 against #109.
Claude Opus 5 or GLM 4.5 Air?
As of Oct 14, 2026, Claude Opus 5 leads GLM 4.5 Air in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 5 or GLM 4.5 Air for General LLM?
As of Oct 14, 2026, Claude Opus 5 leads GLM 4.5 Air in General LLM at #11 against #142.
Claude Opus 5 or GLM 4.5 Air for Reasoning?
As of Oct 14, 2026, Claude Opus 5 leads GLM 4.5 Air in Reasoning at #9 against #140.
Claude Opus 5 or GLM 4.5 Air for Long context?
As of Oct 14, 2026, Claude Opus 5 leads GLM 4.5 Air in Long context at #9 against #138.