GLM 5.3 vs Llama 3.1 405B Instruct
As of Oct 15, 2026, GLM 5.3 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
GLM 5.3
Yes. Yes on General LLM (open weights); Reasoning (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 | Llama 3.1 405B Instruct |
|---|---|---|
| General LLM | #24 · #24 in General LLM Margin 12.765957446808514 LMArena leaderboard dataset · Oct 13, 2026 | #5 · #5 in General LLM Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Reasoning | #19 · #19 in Reasoning Margin 10.63829787234043 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 | #28 · #28 in Science Margin — Epoch AI benchmarking hub · Aug 14, 2026 | #124 · #124 in Science Margin — Epoch AI benchmarking hub · Jul 23, 2024 |
| Coding | #7 · #7 in Coding Margin 36.36363636363637 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Agentic | #7 · #7 in Coding › Agentic Margin 36.36363636363637 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #20 · #20 in Coding › Web dev Margin 15.200000000000003 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #31 · #31 in Long context Margin 16.489361702127653 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Factuality | #31 · #31 in Factuality Margin 18.604651162790702 LMArena leaderboard dataset · Oct 13, 2026 | — |
GLM 5.3: $1.275 per 1M blended tokens.
Llama 3.1 405B Instruct: price per 1M tokens is unset in the catalog.
GLM 5.3: open weights.
Llama 3.1 405B Instruct: open weights.
General LLM: As of Oct 15, 2026, Llama 3.1 405B Instruct leads GLM 5.3 in General LLM at #5 against #24.
Science: As of Oct 15, 2026, GLM 5.3 leads Llama 3.1 405B Instruct in Science at #28 against #124.
GLM 5.3 · Llama 3.1 405B Instruct
GLM 5.3 or Llama 3.1 405B Instruct?
As of Oct 15, 2026, GLM 5.3 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
GLM 5.3 or Llama 3.1 405B Instruct for General LLM?
As of Oct 15, 2026, Llama 3.1 405B Instruct leads GLM 5.3 in General LLM at #5 against #24.
GLM 5.3 or Llama 3.1 405B Instruct for Science?
As of Oct 15, 2026, GLM 5.3 leads Llama 3.1 405B Instruct in Science at #28 against #124.