GPT-5 Mini vs Llama 3.1 405B Instruct
As of Oct 15, 2026, GPT-5 Mini leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
GPT-5 Mini
It used to be. Was SOTA in Math.
Llama 3.1 405B Instruct
It used to be. Was SOTA in General LLM.
| Category | GPT-5 Mini | Llama 3.1 405B Instruct |
|---|---|---|
| General LLM | #128 · #128 in General LLM Margin 87.07482993197279 LMArena leaderboard dataset · Oct 13, 2026 | #3 · #3 in General LLM Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Reasoning | #130 · #130 in Reasoning Margin 89.72602739726028 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Sep 4, 2024 |
| Math | #21 · Was SOTA · Math Margin 44.44444444444444 Epoch AI benchmarking hub · Aug 7, 2025 | — |
| Science | #81 · #81 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 — LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #146 · #146 in Long context Margin 99.31972789115646 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | — |
| Factuality | #110 · #110 in Factuality Margin 82.83582089552239 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Abstraction (ARC) | #41 · #41 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 7, 2025 | — |
GPT-5 Mini: $0.6875 per 1M blended tokens.
Llama 3.1 405B Instruct: price per 1M tokens is unset in the catalog.
GPT-5 Mini: closed weights.
Llama 3.1 405B Instruct: open weights.
General LLM: As of Oct 15, 2026, Llama 3.1 405B Instruct leads GPT-5 Mini in General LLM at #3 against #128.
Science: As of Oct 15, 2026, GPT-5 Mini leads Llama 3.1 405B Instruct in Science at #81 against #124.
GPT-5 Mini · Llama 3.1 405B Instruct
GPT-5 Mini or Llama 3.1 405B Instruct?
As of Oct 15, 2026, GPT-5 Mini leads Llama 3.1 405B Instruct in 1 of 2 shared categories: Science.
GPT-5 Mini or Llama 3.1 405B Instruct for General LLM?
As of Oct 15, 2026, Llama 3.1 405B Instruct leads GPT-5 Mini in General LLM at #3 against #128.
GPT-5 Mini or Llama 3.1 405B Instruct for Science?
As of Oct 15, 2026, GPT-5 Mini leads Llama 3.1 405B Instruct in Science at #81 against #124.