GLM 5.3 Flash vs Llama 3.1 405B Instruct
As of Oct 14, 2026, GLM 5.3 Flash leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
GLM 5.3 Flash
Yes. Yes on Coding (best per dollar); Coding › Agentic (best per dollar). Not the overall leader.
Llama 3.1 405B Instruct
It used to be. Was SOTA in General LLM.
| Category | GLM 5.3 Flash | Llama 3.1 405B Instruct |
|---|---|---|
| General LLM | #30 · #30 in General LLM Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 | #3 · #3 in General LLM Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Reasoning | #26 · #26 in Reasoning Margin 18.493150684931507 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | — |
| Science | #34 · #34 in Science Margin — Epoch AI benchmarking hub · Aug 20, 2026 | #124 · #124 in Science Margin — Epoch AI benchmarking hub · Jul 23, 2024 |
| Coding | #10 · #10 in Coding Margin 50 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Agentic | #10 · #10 in Coding › Agentic Margin 50 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #22 · #22 in Coding › Web dev Margin 19.626168224299064 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #30 · #30 in Long context Margin 20.40816326530613 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Vision | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · Aug 20, 2026 | — |
| Factuality | #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 | — |
GLM 5.3 Flash: $0.252 per 1M blended tokens.
Llama 3.1 405B Instruct: price per 1M tokens is unset in the catalog.
GLM 5.3 Flash: open weights.
Llama 3.1 405B Instruct: open weights.
General LLM: As of Oct 14, 2026, Llama 3.1 405B Instruct leads GLM 5.3 Flash in General LLM at #3 against #30.
Science: As of Oct 14, 2026, GLM 5.3 Flash leads Llama 3.1 405B Instruct in Science at #34 against #124.
GLM 5.3 Flash · Llama 3.1 405B Instruct
GLM 5.3 Flash or Llama 3.1 405B Instruct?
As of Oct 14, 2026, GLM 5.3 Flash leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
GLM 5.3 Flash or Llama 3.1 405B Instruct for General LLM?
As of Oct 14, 2026, Llama 3.1 405B Instruct leads GLM 5.3 Flash in General LLM at #3 against #30.
GLM 5.3 Flash or Llama 3.1 405B Instruct for Science?
As of Oct 14, 2026, GLM 5.3 Flash leads Llama 3.1 405B Instruct in Science at #34 against #124.