Claude Opus 5 vs GLM 4.5
As of Oct 15, 2026, Claude Opus 5 leads GLM 4.5 in 3 of 3 shared categories: General LLM, Reasoning, and Long context.
Claude Opus 5
Close. Near-SOTA in Factuality, rank #4.
GLM 4.5
It used to be. Was SOTA in General LLM.
| Category | Claude Opus 5 | GLM 4.5 |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 5.851063829787236 LMArena leaderboard dataset · Oct 13, 2026 | #138 · #138 in General LLM Margin 73.40425531914894 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 5.319148936170208 LMArena leaderboard dataset · Oct 13, 2026 | #129 · #129 in Reasoning Margin 69.14893617021276 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 | #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 · Near-SOTA · Coding › Web dev Margin 4 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #9 · Was SOTA · Long context Margin 4.7872340425531945 LMArena leaderboard dataset · Oct 13, 2026 | #137 · #137 in Long context Margin 72.87234042553192 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 2.9069767441860535 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: $1 per 1M blended tokens.
Claude Opus 5: closed weights.
GLM 4.5: open weights.
General LLM: As of Oct 15, 2026, Claude Opus 5 leads GLM 4.5 in General LLM at #11 against #138.
Reasoning: As of Oct 15, 2026, Claude Opus 5 leads GLM 4.5 in Reasoning at #9 against #129.
Long context: As of Oct 15, 2026, Claude Opus 5 leads GLM 4.5 in Long context at #9 against #137.
Claude Opus 5 or GLM 4.5?
As of Oct 15, 2026, Claude Opus 5 leads GLM 4.5 in 3 of 3 shared categories: General LLM, Reasoning, and Long context.
Claude Opus 5 or GLM 4.5 for General LLM?
As of Oct 15, 2026, Claude Opus 5 leads GLM 4.5 in General LLM at #11 against #138.
Claude Opus 5 or GLM 4.5 for Reasoning?
As of Oct 15, 2026, Claude Opus 5 leads GLM 4.5 in Reasoning at #9 against #129.
Claude Opus 5 or GLM 4.5 for Long context?
As of Oct 15, 2026, Claude Opus 5 leads GLM 4.5 in Long context at #9 against #137.