Claude Fable 5 vs GLM 5.3
As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 in 7 of 8 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, and Factuality.
Claude Fable 5
Close. Near-SOTA in General LLM, rank #3.
GLM 5.3
Yes. Yes on General LLM (open weights); Reasoning (best per dollar). Not the overall leader.
| Category | Claude Fable 5 | GLM 5.3 |
|---|---|---|
| General LLM | #3 · Near-SOTA · General LLM Margin 2.040816326530617 LMArena leaderboard dataset · Oct 13, 2026 | #23 · #23 in General LLM Margin 15.646258503401356 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #3 · Near-SOTA · Reasoning Margin 2.7397260273972535 LMArena leaderboard dataset · Oct 13, 2026 | #19 · #19 in Reasoning Margin 13.698630136986296 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 | #56 · #56 in Science Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #28 · #28 in Science Margin — Epoch AI benchmarking hub · Aug 14, 2026 |
| Coding | #6 · #6 in Coding Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | #7 · #7 in Coding Margin 36.36363636363637 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #6 · #6 in Coding › Agentic Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | #7 · #7 in Coding › Agentic Margin 36.36363636363637 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #17 · Was SOTA · Coding › Web dev Margin 14.953271028037378 LMArena leaderboard dataset · Oct 13, 2026 | #18 · #18 in Coding › Web dev Margin 15.887850467289724 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #3 · Near-SOTA · Long context Margin 2.040816326530603 LMArena leaderboard dataset · Oct 13, 2026 | #27 · #27 in Long context Margin 18.367346938775512 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #5 · Was SOTA · Vision Margin 15.78947368421052 Epoch AI benchmarking hub · Jun 9, 2026 | — |
| Factuality | #7 · Was SOTA · Factuality Margin 5.97014925373135 LMArena leaderboard dataset · Oct 13, 2026 | #27 · #27 in Factuality Margin 20.895522388059703 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jun 9, 2026 | — |
Claude Fable 5: $20 per 1M blended tokens.
GLM 5.3: $1.2592499999999998 per 1M blended tokens.
Claude Fable 5: closed weights.
GLM 5.3: open weights.
General LLM: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 in General LLM at #3 against #23.
Reasoning: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 in Reasoning at #3 against #19.
Science: As of Oct 14, 2026, GLM 5.3 leads Claude Fable 5 in Science at #28 against #56.
Coding: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 in Coding at #6 against #7.
Coding › Agentic: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 in Coding › Agentic at #6 against #7.
Coding › Web dev: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 in Coding › Web dev at #17 against #18.
Long context: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 in Long context at #3 against #27.
Factuality: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 in Factuality at #7 against #27.
Claude Fable 5 or GLM 5.3?
As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 in 7 of 8 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, and Factuality.
Claude Fable 5 or GLM 5.3 for General LLM?
As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 in General LLM at #3 against #23.
Claude Fable 5 or GLM 5.3 for Reasoning?
As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 in Reasoning at #3 against #19.
Claude Fable 5 or GLM 5.3 for Science?
As of Oct 14, 2026, GLM 5.3 leads Claude Fable 5 in Science at #28 against #56.