GPT-5 vs Llama 3.1 405B Instruct
As of Oct 14, 2026, GPT-5 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
GPT-5
It used to be. Was SOTA in General LLM.
Llama 3.1 405B Instruct
It used to be. Was SOTA in General LLM.
| Category | GPT-5 | Llama 3.1 405B Instruct |
|---|---|---|
| General LLM | #76 · Was SOTA · General LLM Margin 51.70068027210884 LMArena leaderboard dataset · Oct 13, 2026 | #3 · #3 in General LLM Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Reasoning | #78 · Was SOTA · Reasoning Margin 54.10958904109589 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Math | #15 · Was SOTA · Math Margin 31.111111111111114 Epoch AI benchmarking hub · Aug 7, 2025 | — |
| Science | #54 · #54 in Science Margin — Epoch AI benchmarking hub · Aug 7, 2025 | #124 · #124 in Science Margin — Epoch AI benchmarking hub · Jul 23, 2024 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Aug 7, 2025 | — |
| Coding › Web dev | #66 · #66 in Coding › Web dev Margin 60.74766355140187 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #107 · Was SOTA · Long context Margin 72.78911564625851 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | — |
| Factuality | #93 · #93 in Factuality Margin 70.14925373134328 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Abstraction (ARC) | #34 · #34 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 7, 2025 | — |
GPT-5: $3.4375000000000004 per 1M blended tokens.
Llama 3.1 405B Instruct: price per 1M tokens is unset in the catalog.
GPT-5: closed weights.
Llama 3.1 405B Instruct: open weights.
General LLM: As of Oct 14, 2026, Llama 3.1 405B Instruct leads GPT-5 in General LLM at #3 against #76.
Science: As of Oct 14, 2026, GPT-5 leads Llama 3.1 405B Instruct in Science at #54 against #124.
GPT-5 · Llama 3.1 405B Instruct
GPT-5 or Llama 3.1 405B Instruct?
As of Oct 14, 2026, GPT-5 leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
GPT-5 or Llama 3.1 405B Instruct for General LLM?
As of Oct 14, 2026, Llama 3.1 405B Instruct leads GPT-5 in General LLM at #3 against #76.
GPT-5 or Llama 3.1 405B Instruct for Science?
As of Oct 14, 2026, GPT-5 leads Llama 3.1 405B Instruct in Science at #54 against #124.