Claude Fable 5 vs GLM 5.3 Flash
As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 Flash in 9 of 10 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Claude Fable 5
Close. Near-SOTA in General LLM, rank #3.
GLM 5.3 Flash
Yes. Yes on Coding (best per dollar); Coding › Agentic (best per dollar). Not the overall leader.
| Category | Claude Fable 5 | GLM 5.3 Flash |
|---|---|---|
| General LLM | #3 · Near-SOTA · General LLM Margin 2.040816326530617 LMArena leaderboard dataset · Oct 13, 2026 | #30 · #30 in General LLM Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #3 · Near-SOTA · Reasoning Margin 2.7397260273972535 LMArena leaderboard dataset · Oct 13, 2026 | #26 · #26 in Reasoning Margin 18.493150684931507 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 | #34 · #34 in Science Margin — Epoch AI benchmarking hub · Aug 20, 2026 |
| Coding | #6 · #6 in Coding Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | #10 · #10 in Coding Margin 50 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #6 · #6 in Coding › Agentic Margin 31.818181818181813 Terminal-Bench Harbor Hub · Oct 6, 2026 | #10 · #10 in Coding › Agentic Margin 50 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 | #22 · #22 in Coding › Web dev Margin 19.626168224299064 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #3 · Near-SOTA · Long context Margin 2.040816326530603 LMArena leaderboard dataset · Oct 13, 2026 | #30 · #30 in Long context Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #5 · Was SOTA · Vision Margin 15.78947368421052 Epoch AI benchmarking hub · Jun 9, 2026 | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · Aug 20, 2026 |
| Factuality | #7 · Was SOTA · Factuality Margin 5.97014925373135 LMArena leaderboard dataset · Oct 13, 2026 | #30 · #30 in Factuality Margin 23.13432835820896 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jun 9, 2026 | #14 · #14 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 20, 2026 |
Claude Fable 5: $20 per 1M blended tokens.
GLM 5.3 Flash: $0.2375 per 1M blended tokens.
Claude Fable 5: closed weights.
GLM 5.3 Flash: open weights.
General LLM: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 Flash in General LLM at #3 against #30.
Reasoning: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 Flash in Reasoning at #3 against #26.
Science: As of Oct 14, 2026, GLM 5.3 Flash leads Claude Fable 5 in Science at #34 against #56.
Coding: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 Flash in Coding at #6 against #10.
Coding › Agentic: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 Flash in Coding › Agentic at #6 against #10.
Coding › Web dev: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 Flash in Coding › Web dev at #17 against #22.
Long context: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 Flash in Long context at #3 against #30.
Vision: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 Flash in Vision at #5 against #29.
Factuality: As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 Flash in Factuality at #7 against #30.
Abstraction (ARC): As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 Flash in Abstraction (ARC) at #1 against #14.
Claude Fable 5 · GLM 5.3 Flash
Claude Fable 5 or GLM 5.3 Flash?
As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 Flash in 9 of 10 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Claude Fable 5 or GLM 5.3 Flash for General LLM?
As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 Flash in General LLM at #3 against #30.
Claude Fable 5 or GLM 5.3 Flash for Reasoning?
As of Oct 14, 2026, Claude Fable 5 leads GLM 5.3 Flash in Reasoning at #3 against #26.
Claude Fable 5 or GLM 5.3 Flash for Science?
As of Oct 14, 2026, GLM 5.3 Flash leads Claude Fable 5 in Science at #34 against #56.