Claude Opus 4.6 vs Llama 3.1 405B Instruct
As of Oct 14, 2026, Claude Opus 4.6 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
Claude Opus 4.6
Close. Near-SOTA in Reasoning, rank #2.
Llama 3.1 405B Instruct
It used to be. Was SOTA in General LLM.
| Category | Claude Opus 4.6 | Llama 3.1 405B Instruct |
|---|---|---|
| General LLM | #4 · Near-SOTA · General LLM Margin 2.7210884353741562 LMArena leaderboard dataset · Oct 13, 2026 | #3 · #3 in General LLM Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Reasoning | #2 · Near-SOTA · Reasoning Margin 2.0547945205479436 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Math | #11 · #11 in Math Margin 22.22222222222223 Epoch AI benchmarking hub · Feb 5, 2026 | — |
| Science | #32 · #32 in Science Margin — Epoch AI benchmarking hub · Feb 5, 2026 | #124 · #124 in Science Margin — Epoch AI benchmarking hub · Jul 23, 2024 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Feb 5, 2026 | — |
| Coding › Web dev | #35 · Was SOTA · Coding › Web dev Margin 31.775700934579433 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #2 · Near-SOTA · Long context Margin 0.6802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | — |
| Factuality | #3 · Near-SOTA · Factuality Margin 2.9850746268656536 LMArena leaderboard dataset · Oct 13, 2026 | — |
Claude Opus 4.6: $10 per 1M blended tokens.
Llama 3.1 405B Instruct: price per 1M tokens is unset in the catalog.
Claude Opus 4.6: closed weights.
Llama 3.1 405B Instruct: open weights.
General LLM: As of Oct 14, 2026, Llama 3.1 405B Instruct leads Claude Opus 4.6 in General LLM at #3 against #4.
Science: As of Oct 14, 2026, Claude Opus 4.6 leads Llama 3.1 405B Instruct in Science at #32 against #124.
Claude Opus 4.6 · Llama 3.1 405B Instruct
Claude Opus 4.6 or Llama 3.1 405B Instruct?
As of Oct 14, 2026, Claude Opus 4.6 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
Claude Opus 4.6 or Llama 3.1 405B Instruct for General LLM?
As of Oct 14, 2026, Llama 3.1 405B Instruct leads Claude Opus 4.6 in General LLM at #3 against #4.
Claude Opus 4.6 or Llama 3.1 405B Instruct for Science?
As of Oct 14, 2026, Claude Opus 4.6 leads Llama 3.1 405B Instruct in Science at #32 against #124.