Claude Opus 4.1 vs Llama 3.1 405B Instruct
As of Oct 14, 2026, Claude Opus 4.1 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
Claude Opus 4.1
It used to be. Was SOTA in General LLM.
Llama 3.1 405B Instruct
It used to be. Was SOTA in General LLM.
| Category | Claude Opus 4.1 | Llama 3.1 405B Instruct |
|---|---|---|
| General LLM | #57 · Was SOTA · General LLM Margin 38.775510204081634 LMArena leaderboard dataset · Oct 13, 2026 | #3 · #3 in General LLM Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Reasoning | #47 · Was SOTA · Reasoning Margin 32.87671232876713 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Math | #27 · #27 in Math Margin 57.77777777777778 Epoch AI benchmarking hub · Aug 5, 2025 | — |
| Science | #83 · #83 in Science Margin — Epoch AI benchmarking hub · Aug 5, 2025 | #124 · #124 in Science Margin — Epoch AI benchmarking hub · Jul 23, 2024 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Aug 5, 2025 | — |
| Coding › Web dev | #76 · Was SOTA · Coding › Web dev Margin 70.09345794392523 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #44 · Was SOTA · Long context Margin 29.931972789115648 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Factuality | #74 · #74 in Factuality Margin 55.97014925373134 LMArena leaderboard dataset · Oct 13, 2026 | — |
Claude Opus 4.1: $29.999999999999996 per 1M blended tokens.
Llama 3.1 405B Instruct: price per 1M tokens is unset in the catalog.
Claude Opus 4.1: closed weights.
Llama 3.1 405B Instruct: open weights.
General LLM: As of Oct 14, 2026, Llama 3.1 405B Instruct leads Claude Opus 4.1 in General LLM at #3 against #57.
Science: As of Oct 14, 2026, Claude Opus 4.1 leads Llama 3.1 405B Instruct in Science at #83 against #124.
Claude Opus 4.1 · Llama 3.1 405B Instruct
Claude Opus 4.1 or Llama 3.1 405B Instruct?
As of Oct 14, 2026, Claude Opus 4.1 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
Claude Opus 4.1 or Llama 3.1 405B Instruct for General LLM?
As of Oct 14, 2026, Llama 3.1 405B Instruct leads Claude Opus 4.1 in General LLM at #3 against #57.
Claude Opus 4.1 or Llama 3.1 405B Instruct for Science?
As of Oct 14, 2026, Claude Opus 4.1 leads Llama 3.1 405B Instruct in Science at #83 against #124.