Claude Fable 5.1 vs GLM 5.3 Flash
As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in 9 of 9 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Claude Fable 5.1
Yes. SOTA in co-SOTA in Factuality.
GLM 5.3 Flash
Yes. Yes on Coding (best per dollar); Coding › Agentic (best per dollar). Not the overall leader.
| Category | Claude Fable 5.1 | GLM 5.3 Flash |
|---|---|---|
| General LLM | #6 · Was SOTA · General LLM Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #30 · #30 in General LLM Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #5 · Was SOTA · Reasoning Margin 4.109589041095887 LMArena leaderboard dataset · Oct 13, 2026 | #26 · #26 in Reasoning Margin 18.493150684931507 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #2 · Near-SOTA · Math Margin 2.2222222222222285 Epoch AI benchmarking hub · Sep 1, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | — | #34 · #34 in Science Margin — Epoch AI benchmarking hub · Aug 20, 2026 |
| Coding | #3 · Near-SOTA · Coding Margin 18.181818181818187 Terminal-Bench Harbor Hub · Oct 6, 2026 | #10 · #10 in Coding Margin 50 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #3 · Near-SOTA · Coding › Agentic Margin 18.181818181818187 Terminal-Bench Harbor Hub · Oct 6, 2026 | #10 · #10 in Coding › Agentic Margin 50 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #5 · Near-SOTA · Coding › Web dev Margin 3.738317757009341 LMArena leaderboard dataset · Oct 13, 2026 | #22 · #22 in Coding › Web dev Margin 19.626168224299064 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #6 · Was SOTA · Long context Margin 4.08163265306122 LMArena leaderboard dataset · Oct 13, 2026 | #30 · #30 in Long context Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #6 · #6 in Vision Margin 18.421052631578945 Epoch AI benchmarking hub · Sep 1, 2026 | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · Aug 20, 2026 |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #30 · #30 in Factuality Margin 23.13432835820896 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 1, 2026 | #14 · #14 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 20, 2026 |
Claude Fable 5.1: $20 per 1M blended tokens.
GLM 5.3 Flash: $0.2375 per 1M blended tokens.
Claude Fable 5.1: closed weights.
GLM 5.3 Flash: open weights.
General LLM: As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in General LLM at #6 against #30.
Reasoning: As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in Reasoning at #5 against #26.
Coding: As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in Coding at #3 against #10.
Coding › Agentic: As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in Coding › Agentic at #3 against #10.
Coding › Web dev: As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in Coding › Web dev at #5 against #22.
Long context: As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in Long context at #6 against #30.
Vision: As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in Vision at #6 against #29.
Factuality: As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in Factuality at #1 against #30.
Abstraction (ARC): As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in Abstraction (ARC) at #3 against #14.
Claude Fable 5.1 · GLM 5.3 Flash
Claude Fable 5.1 or GLM 5.3 Flash?
As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in 9 of 9 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Claude Fable 5.1 or GLM 5.3 Flash for General LLM?
As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in General LLM at #6 against #30.
Claude Fable 5.1 or GLM 5.3 Flash for Reasoning?
As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in Reasoning at #5 against #26.
Claude Fable 5.1 or GLM 5.3 Flash for Coding?
As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.3 Flash in Coding at #3 against #10.