# Llama 3.1 405B Instruct vs O4 Mini

As of Oct 15, 2026, Llama 3.1 405B Instruct leads O4 Mini in 1 of 2 shared categories: General LLM.

Llama 3.1 405B Instruct: price per 1M tokens is unset in the catalog.

O4 Mini: $1.9250000000000003 per 1M blended tokens.

Llama 3.1 405B Instruct: open weights.

O4 Mini: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Llama 3.1 405B Instruct leads O4 Mini in General LLM at #5 against #162.
- Which to pick, Science: As of Oct 15, 2026, O4 Mini leads Llama 3.1 405B Instruct in Science at #70 against #124.

As of Oct 15, 2026, Llama 3.1 405B Instruct is a former state-of-the-art holder in General LLM (since Aug 28, 2024; sources LMArena Text (style-controlled, overall); methodology v1.0).

As of Oct 15, 2026, O4 Mini is a former state-of-the-art holder in Math (since Jul 20, 2025; sources Humanity's Last Exam; methodology v1.0).