Claude Opus 5.5 vs GLM 4.5 Air
As of Oct 15, 2026, Claude Opus 5.5 leads GLM 4.5 Air in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 5.5
Yes. SOTA in Reasoning (tied), Coding (tied), Coding › Agentic (tied), Coding › Web dev, Long context (tied), and Factuality (tied).
GLM 4.5 Air
#32 Best current rank: #32 in Math, as of Oct 15, 2026.
| Category | Claude Opus 5.5 | GLM 4.5 Air |
|---|---|---|
| General LLM | #2 · Near-SOTA · General LLM Margin 1.0638297872340416 LMArena leaderboard dataset · Oct 13, 2026 | #183 · #183 in General LLM Margin 97.34042553191489 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #1 · Co-SOTA · Reasoning Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #181 · #181 in Reasoning Margin 96.80851063829788 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 | #31 · #31 in Science Margin — Epoch AI benchmarking hub · Sep 22, 2026 | — |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #1 · SOTA · Coding › Web dev Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #1 · Co-SOTA · Long context Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #179 · #179 in Long context Margin 95.2127659574468 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #4 · Near-SOTA · Vision Margin 13.15789473684211 Epoch AI benchmarking hub · Sep 22, 2026 | — |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #145 · #145 in Factuality Margin 84.88372093023256 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 | — |
Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.
GLM 4.5 Air: $0.31 per 1M blended tokens.
Claude Opus 5.5: closed weights.
GLM 4.5 Air: open weights.
General LLM: As of Oct 15, 2026, Claude Opus 5.5 leads GLM 4.5 Air in General LLM at #2 against #183.
Reasoning: As of Oct 15, 2026, Claude Opus 5.5 leads GLM 4.5 Air in Reasoning at #1 against #181.
Long context: As of Oct 15, 2026, Claude Opus 5.5 leads GLM 4.5 Air in Long context at #1 against #179.
Factuality: As of Oct 15, 2026, Claude Opus 5.5 leads GLM 4.5 Air in Factuality at #1 against #145.
Claude Opus 5.5 or GLM 4.5 Air?
As of Oct 15, 2026, Claude Opus 5.5 leads GLM 4.5 Air in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 5.5 or GLM 4.5 Air for General LLM?
As of Oct 15, 2026, Claude Opus 5.5 leads GLM 4.5 Air in General LLM at #2 against #183.
Claude Opus 5.5 or GLM 4.5 Air for Reasoning?
As of Oct 15, 2026, Claude Opus 5.5 leads GLM 4.5 Air in Reasoning at #1 against #181.
Claude Opus 5.5 or GLM 4.5 Air for Long context?
As of Oct 15, 2026, Claude Opus 5.5 leads GLM 4.5 Air in Long context at #1 against #179.