Claude Opus 5.5 vs GLM 4.5
As of Oct 14, 2026, Claude Opus 5.5 leads GLM 4.5 in 3 of 3 shared categories: General LLM, Reasoning, and Long context.
Claude Opus 5.5
Yes. SOTA in co-SOTA in Reasoning, co-SOTA in Coding, co-SOTA in Coding › Agentic, Coding › Web dev, co-SOTA in Long context and co-SOTA in Factuality.
GLM 4.5
It used to be. Was SOTA in General LLM.
| Category | Claude Opus 5.5 | GLM 4.5 |
|---|---|---|
| General LLM | #2 · Near-SOTA · General LLM Margin 1.3605442176870781 LMArena leaderboard dataset · Oct 13, 2026 | #107 · #107 in General LLM Margin 72.78911564625851 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #1 · Co-SOTA · Reasoning Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #99 · #99 in Reasoning Margin 68.4931506849315 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #31 · #31 in Math Margin 66.66666666666666 Epoch AI benchmarking hub · Aug 3, 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 | #103 · #103 in Long context Margin 70.06802721088435 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 | — |
| 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: $1 per 1M blended tokens.
Claude Opus 5.5: closed weights.
GLM 4.5: open weights.
General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads GLM 4.5 in General LLM at #2 against #107.
Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads GLM 4.5 in Reasoning at #1 against #99.
Long context: As of Oct 14, 2026, Claude Opus 5.5 leads GLM 4.5 in Long context at #1 against #103.
Claude Opus 5.5 or GLM 4.5?
As of Oct 14, 2026, Claude Opus 5.5 leads GLM 4.5 in 3 of 3 shared categories: General LLM, Reasoning, and Long context.
Claude Opus 5.5 or GLM 4.5 for General LLM?
As of Oct 14, 2026, Claude Opus 5.5 leads GLM 4.5 in General LLM at #2 against #107.
Claude Opus 5.5 or GLM 4.5 for Reasoning?
As of Oct 14, 2026, Claude Opus 5.5 leads GLM 4.5 in Reasoning at #1 against #99.
Claude Opus 5.5 or GLM 4.5 for Long context?
As of Oct 14, 2026, Claude Opus 5.5 leads GLM 4.5 in Long context at #1 against #103.