Grok 4.3 vs Llama 3.1 405B Instruct
As of Oct 15, 2026, Grok 4.3 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
Grok 4.3
#32 Best current rank: #32 in Vision, as of Oct 15, 2026.
Llama 3.1 405B Instruct
It used to be. Was SOTA in General LLM.
| Category | Grok 4.3 | Llama 3.1 405B Instruct |
|---|---|---|
| General LLM | #85 · #85 in General LLM Margin 45.212765957446805 LMArena leaderboard dataset · Oct 13, 2026 | #5 · #5 in General LLM Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Reasoning | #96 · #96 in Reasoning Margin 51.59574468085106 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 | #41 · #41 in Science Margin — Epoch AI benchmarking hub · Apr 17, 2026 | #124 · #124 in Science Margin — Epoch AI benchmarking hub · Jul 23, 2024 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | — |
| Coding › Web dev | #95 · #95 in Coding › Web dev Margin 75.2 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #94 · #94 in Long context Margin 50 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Vision | #32 · #32 in Vision Margin 97.36842105263158 Epoch AI benchmarking hub · Apr 17, 2026 | — |
| Factuality | #111 · #111 in Factuality Margin 65.11627906976744 LMArena leaderboard dataset · Oct 13, 2026 | — |
Grok 4.3: $1.5625000000000002 per 1M blended tokens.
Llama 3.1 405B Instruct: price per 1M tokens is unset in the catalog.
Grok 4.3: closed weights.
Llama 3.1 405B Instruct: open weights.
General LLM: As of Oct 15, 2026, Llama 3.1 405B Instruct leads Grok 4.3 in General LLM at #5 against #85.
Science: As of Oct 15, 2026, Grok 4.3 leads Llama 3.1 405B Instruct in Science at #41 against #124.
Grok 4.3 · Llama 3.1 405B Instruct
Grok 4.3 or Llama 3.1 405B Instruct?
As of Oct 15, 2026, Grok 4.3 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
Grok 4.3 or Llama 3.1 405B Instruct for General LLM?
As of Oct 15, 2026, Llama 3.1 405B Instruct leads Grok 4.3 in General LLM at #5 against #85.
Grok 4.3 or Llama 3.1 405B Instruct for Science?
As of Oct 15, 2026, Grok 4.3 leads Llama 3.1 405B Instruct in Science at #41 against #124.