# Claude 3.5 Sonnet vs O3 Mini

As of Oct 14, 2026, Claude 3.5 Sonnet leads O3 Mini in 1 of 4 shared categories: Long context.

Claude 3.5 Sonnet: price per 1M tokens is unset in the catalog.

O3 Mini: $1.9250000000000003 per 1M blended tokens.

Claude 3.5 Sonnet: closed weights.

O3 Mini: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, O3 Mini leads Claude 3.5 Sonnet in General LLM at #7 against #140.
- Which to pick, Reasoning: As of Oct 14, 2026, O3 Mini leads Claude 3.5 Sonnet in Reasoning at #133 against #136.
- Which to pick, Science: As of Oct 14, 2026, O3 Mini leads Claude 3.5 Sonnet in Science at #76 against #119.
- Which to pick, Long context: As of Oct 14, 2026, Claude 3.5 Sonnet leads O3 Mini in Long context at #126 against #145.

As of Oct 14, 2026, Claude 3.5 Sonnet 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 14, 2026, O3 Mini is a former state-of-the-art holder in Reasoning (since Feb 9, 2025; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).