Claude Opus 4.8 vs Llama 3.1 405B Instruct
As of Oct 15, 2026, Claude Opus 4.8 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
Llama 3.1 405B Instruct
It used to be. Was SOTA in General LLM.
| Category | Claude Opus 4.8 | Llama 3.1 405B Instruct |
|---|---|---|
| General LLM | #21 · #21 in General LLM Margin 11.170212765957444 LMArena leaderboard dataset · Oct 13, 2026 | #5 · #5 in General LLM Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Reasoning | #10 · #10 in Reasoning Margin 5.851063829787236 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 | #27 · #27 in Science Margin — Epoch AI benchmarking hub · May 28, 2026 | #124 · #124 in Science Margin — Epoch AI benchmarking hub · Jul 23, 2024 |
| Coding | #12 · #12 in Coding Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Agentic | #12 · #12 in Coding › Agentic Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #35 · Was SOTA · Coding › Web dev Margin 27.200000000000003 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #10 · Was SOTA · Long context Margin 5.319148936170208 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Vision | #13 · #13 in Vision Margin 36.842105263157904 Epoch AI benchmarking hub · May 28, 2026 | — |
| Factuality | #24 · #24 in Factuality Margin 14.534883720930239 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Abstraction (ARC) | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 | — |
Claude Opus 4.8: $10 per 1M blended tokens.
Llama 3.1 405B Instruct: price per 1M tokens is unset in the catalog.
Claude Opus 4.8: closed weights.
Llama 3.1 405B Instruct: open weights.
General LLM: As of Oct 15, 2026, Llama 3.1 405B Instruct leads Claude Opus 4.8 in General LLM at #5 against #21.
Science: As of Oct 15, 2026, Claude Opus 4.8 leads Llama 3.1 405B Instruct in Science at #27 against #124.
Claude Opus 4.8 · Llama 3.1 405B Instruct
Claude Opus 4.8 or Llama 3.1 405B Instruct?
As of Oct 15, 2026, Claude Opus 4.8 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
Claude Opus 4.8 or Llama 3.1 405B Instruct for General LLM?
As of Oct 15, 2026, Llama 3.1 405B Instruct leads Claude Opus 4.8 in General LLM at #5 against #21.
Claude Opus 4.8 or Llama 3.1 405B Instruct for Science?
As of Oct 15, 2026, Claude Opus 4.8 leads Llama 3.1 405B Instruct in Science at #27 against #124.