Claude Opus 5 vs GLM 5.1
As of Oct 14, 2026, Claude Opus 5 leads GLM 5.1 in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
| Category | Claude Opus 5 | GLM 5.1 |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #37 · #37 in General LLM Margin 25.17006802721089 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 6.849315068493155 LMArena leaderboard dataset · Oct 13, 2026 | #36 · #36 in Reasoning Margin 25.342465753424662 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #35 · #35 in Science Margin — Epoch AI benchmarking hub · Apr 7, 2026 |
| Coding | #4 · #4 in Coding Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Apr 7, 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 | #46 · Was SOTA · Coding › Web dev Margin 42.05607476635514 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #9 · Was SOTA · Long context Margin 6.122448979591837 LMArena leaderboard dataset · Oct 13, 2026 | #36 · Was SOTA · Long context Margin 24.48979591836735 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 | #38 · #38 in Factuality Margin 29.104477611940297 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 5.1: $2.0425 per 1M blended tokens.
Claude Opus 5: closed weights.
GLM 5.1: open weights.
General LLM: As of Oct 14, 2026, Claude Opus 5 leads GLM 5.1 in General LLM at #11 against #37.
Reasoning: As of Oct 14, 2026, Claude Opus 5 leads GLM 5.1 in Reasoning at #9 against #36.
Science: As of Oct 14, 2026, Claude Opus 5 leads GLM 5.1 in Science at #12 against #35.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 5 leads GLM 5.1 in Coding › Web dev at #6 against #46.
Long context: As of Oct 14, 2026, Claude Opus 5 leads GLM 5.1 in Long context at #9 against #36.
Factuality: As of Oct 14, 2026, Claude Opus 5 leads GLM 5.1 in Factuality at #4 against #38.
Claude Opus 5 or GLM 5.1?
As of Oct 14, 2026, Claude Opus 5 leads GLM 5.1 in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
Claude Opus 5 or GLM 5.1 for General LLM?
As of Oct 14, 2026, Claude Opus 5 leads GLM 5.1 in General LLM at #11 against #37.
Claude Opus 5 or GLM 5.1 for Reasoning?
As of Oct 14, 2026, Claude Opus 5 leads GLM 5.1 in Reasoning at #9 against #36.
Claude Opus 5 or GLM 5.1 for Science?
As of Oct 14, 2026, Claude Opus 5 leads GLM 5.1 in Science at #12 against #35.