Claude Sonnet 5 vs GLM 5.3 Flash
As of Oct 14, 2026, Claude Sonnet 5 leads GLM 5.3 Flash in 1 of 8 shared categories: Science.
Claude Sonnet 5
#19 Best current rank: #19 in Coding, as of Oct 14, 2026.
GLM 5.3 Flash
Yes. Yes on Reasoning (best per dollar); Coding (best per dollar). Not the overall leader.
| Category | Claude Sonnet 5 | GLM 5.3 Flash |
|---|---|---|
| General LLM | #39 · #39 in General LLM Margin 26.530612244897952 LMArena leaderboard dataset · Oct 13, 2026 | #30 · #30 in General LLM Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #34 · #34 in Reasoning Margin 23.972602739726028 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 | #32 · #32 in Science Margin — Epoch AI benchmarking hub · Jun 30, 2026 | #34 · #34 in Science Margin — Epoch AI benchmarking hub · Aug 20, 2026 |
| Coding | #19 · #19 in Coding Margin 95.45454545454545 Terminal-Bench Harbor Hub · Oct 6, 2026 | #10 · #10 in Coding Margin 50 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #19 · #19 in Coding › Agentic Margin 95.45454545454545 Terminal-Bench Harbor Hub · Oct 6, 2026 | #10 · #10 in Coding › Agentic Margin 50 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #38 · #38 in Coding › Web dev Margin 34.57943925233644 LMArena leaderboard dataset · Oct 13, 2026 | #22 · #22 in Coding › Web dev Margin 19.626168224299064 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #31 · #31 in Long context Margin 21.088435374149654 LMArena leaderboard dataset · Oct 13, 2026 | #30 · #30 in Long context Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · Aug 20, 2026 |
| Factuality | #47 · #47 in Factuality Margin 35.82089552238806 LMArena leaderboard dataset · Oct 13, 2026 | #30 · #30 in Factuality Margin 23.13432835820896 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #14 · #14 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 20, 2026 |
Claude Sonnet 5: $4.000000000000001 per 1M blended tokens.
GLM 5.3 Flash: $0.2375 per 1M blended tokens.
Claude Sonnet 5: closed weights.
GLM 5.3 Flash: open weights.
General LLM: As of Oct 14, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in General LLM at #30 against #39.
Reasoning: As of Oct 14, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in Reasoning at #26 against #34.
Science: As of Oct 14, 2026, Claude Sonnet 5 leads GLM 5.3 Flash in Science at #32 against #34.
Coding: As of Oct 14, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in Coding at #10 against #19.
Coding › Agentic: As of Oct 14, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in Coding › Agentic at #10 against #19.
Coding › Web dev: As of Oct 14, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in Coding › Web dev at #22 against #38.
Long context: As of Oct 14, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in Long context at #30 against #31.
Factuality: As of Oct 14, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in Factuality at #30 against #47.
Claude Sonnet 5 · GLM 5.3 Flash
Claude Sonnet 5 or GLM 5.3 Flash?
As of Oct 14, 2026, Claude Sonnet 5 leads GLM 5.3 Flash in 1 of 8 shared categories: Science.
Claude Sonnet 5 or GLM 5.3 Flash for General LLM?
As of Oct 14, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in General LLM at #30 against #39.
Claude Sonnet 5 or GLM 5.3 Flash for Reasoning?
As of Oct 14, 2026, GLM 5.3 Flash leads Claude Sonnet 5 in Reasoning at #26 against #34.
Claude Sonnet 5 or GLM 5.3 Flash for Science?
As of Oct 14, 2026, Claude Sonnet 5 leads GLM 5.3 Flash in Science at #32 against #34.