Claude Opus 4.8 vs GLM 4.5 Air
As of Oct 14, 2026, Claude Opus 4.8 leads GLM 4.5 Air in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
GLM 4.5 Air
#32 Best current rank: #32 in Math, as of Oct 14, 2026.
| Category | Claude Opus 4.8 | GLM 4.5 Air |
|---|---|---|
| General LLM | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 | #142 · #142 in General LLM Margin 96.59863945578232 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #10 · #10 in Reasoning Margin 7.534246575342465 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 | #27 · #27 in Science Margin — Epoch AI benchmarking hub · May 28, 2026 | — |
| Coding | #12 · #12 in Coding Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #12 · #12 in Coding › Agentic Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #33 · Was SOTA · Coding › Web dev Margin 29.90654205607477 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #138 · #138 in Long context Margin 93.87755102040816 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #13 · #13 in Vision Margin 36.842105263157904 Epoch AI benchmarking hub · May 28, 2026 | — |
| Factuality | #21 · #21 in Factuality Margin 16.417910447761187 LMArena leaderboard dataset · Oct 13, 2026 | #109 · #109 in Factuality Margin 82.08955223880596 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 | — |
Claude Opus 4.8: $10 per 1M blended tokens.
GLM 4.5 Air: $0.31 per 1M blended tokens.
Claude Opus 4.8: closed weights.
GLM 4.5 Air: open weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.8 leads GLM 4.5 Air in General LLM at #20 against #142.
Reasoning: As of Oct 14, 2026, Claude Opus 4.8 leads GLM 4.5 Air in Reasoning at #10 against #140.
Long context: As of Oct 14, 2026, Claude Opus 4.8 leads GLM 4.5 Air in Long context at #10 against #138.
Factuality: As of Oct 14, 2026, Claude Opus 4.8 leads GLM 4.5 Air in Factuality at #21 against #109.
Claude Opus 4.8 or GLM 4.5 Air?
As of Oct 14, 2026, Claude Opus 4.8 leads GLM 4.5 Air in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.8 or GLM 4.5 Air for General LLM?
As of Oct 14, 2026, Claude Opus 4.8 leads GLM 4.5 Air in General LLM at #20 against #142.
Claude Opus 4.8 or GLM 4.5 Air for Reasoning?
As of Oct 14, 2026, Claude Opus 4.8 leads GLM 4.5 Air in Reasoning at #10 against #140.
Claude Opus 4.8 or GLM 4.5 Air for Long context?
As of Oct 14, 2026, Claude Opus 4.8 leads GLM 4.5 Air in Long context at #10 against #138.