Claude Opus 4 vs Llama 3.1 405B Instruct
As of Oct 14, 2026, Claude Opus 4 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
Claude Opus 4
It used to be. Was SOTA in Reasoning.
Llama 3.1 405B Instruct
It used to be. Was SOTA in General LLM.
| Category | Claude Opus 4 | Llama 3.1 405B Instruct |
|---|---|---|
| General LLM | #102 · #102 in General LLM Margin 69.38775510204081 LMArena leaderboard dataset · Oct 13, 2026 | #3 · #3 in General LLM Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Reasoning | #97 · Was SOTA · Reasoning Margin 67.12328767123287 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Math | #29 · #29 in Math Margin 62.22222222222222 Epoch AI benchmarking hub · May 22, 2025 | — |
| Science | #91 · #91 in Science Margin — Epoch AI benchmarking hub · May 22, 2025 | #124 · #124 in Science Margin — Epoch AI benchmarking hub · Jul 23, 2024 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · May 22, 2025 | — |
| Long context | #70 · #70 in Long context Margin 47.61904761904762 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | — |
| Abstraction (ARC) | #69 · #69 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 22, 2025 | — |
Claude Opus 4: price per 1M tokens is unset in the catalog.
Llama 3.1 405B Instruct: price per 1M tokens is unset in the catalog.
Claude Opus 4: 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 in General LLM at #3 against #102.
Science: As of Oct 14, 2026, Claude Opus 4 leads Llama 3.1 405B Instruct in Science at #91 against #124.
Claude Opus 4 · Llama 3.1 405B Instruct
Claude Opus 4 or Llama 3.1 405B Instruct?
As of Oct 14, 2026, Claude Opus 4 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
Claude Opus 4 or Llama 3.1 405B Instruct for General LLM?
As of Oct 14, 2026, Llama 3.1 405B Instruct leads Claude Opus 4 in General LLM at #3 against #102.
Claude Opus 4 or Llama 3.1 405B Instruct for Science?
As of Oct 14, 2026, Claude Opus 4 leads Llama 3.1 405B Instruct in Science at #91 against #124.