# Gemini 2.5 Flash vs O3 Mini

As of Oct 15, 2026, Gemini 2.5 Flash leads O3 Mini in 2 of 3 shared categories: Reasoning and Long context.

Gemini 2.5 Flash: $0.85 per 1M blended tokens.

O3 Mini: $1.9250000000000003 per 1M blended tokens.

Gemini 2.5 Flash: closed weights.

O3 Mini: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, O3 Mini leads Gemini 2.5 Flash in General LLM at #10 against #139.
- Which to pick, Reasoning: As of Oct 15, 2026, Gemini 2.5 Flash leads O3 Mini in Reasoning at #148 against #172.
- Which to pick, Long context: As of Oct 15, 2026, Gemini 2.5 Flash leads O3 Mini in Long context at #138 against #186.

As of Oct 15, 2026, Gemini 2.5 Flash is ranked #90 in Factuality (since Oct 15, 2026; sources LMArena Text factuality; methodology v1.0).

As of Oct 15, 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).