# Gemini 3.1 Pro Preview vs Gemini 3.8 Flash

As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Gemini 3.8 Flash in 1 of 9 shared categories: Math.

Gemini 3.1 Pro Preview: $4.5 per 1M blended tokens.

Gemini 3.8 Flash: $1.5 per 1M blended tokens.

Gemini 3.1 Pro Preview: closed weights.

Gemini 3.8 Flash: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Gemini 3.8 Flash leads Gemini 3.1 Pro Preview in General LLM at #7 against #15.
- Which to pick, Reasoning: As of Oct 14, 2026, Gemini 3.8 Flash leads Gemini 3.1 Pro Preview in Reasoning at #6 against #14.
- Which to pick, Math: As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Gemini 3.8 Flash in Math at #3 against #5.
- Which to pick, Science: As of Oct 14, 2026, Gemini 3.8 Flash leads Gemini 3.1 Pro Preview in Science at #4 against #7.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, Gemini 3.8 Flash leads Gemini 3.1 Pro Preview in Coding › Web dev at #27 against #58.
- Which to pick, Long context: As of Oct 14, 2026, Gemini 3.8 Flash leads Gemini 3.1 Pro Preview in Long context at #5 against #12.
- Which to pick, Vision: As of Oct 14, 2026, Gemini 3.8 Flash leads Gemini 3.1 Pro Preview in Vision at #15 against #25.
- Which to pick, Factuality: As of Oct 14, 2026, Gemini 3.8 Flash leads Gemini 3.1 Pro Preview in Factuality at #17 against #18.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, Gemini 3.8 Flash leads Gemini 3.1 Pro Preview in Abstraction (ARC) at #1 against #2.

As of Oct 14, 2026, Gemini 3.1 Pro Preview is state of the art on best per dollar in Math (since Oct 14, 2026; sources Humanity's Last Exam; methodology v1.0).

As of Oct 14, 2026, Gemini 3.8 Flash is state of the art on best per dollar in General LLM (since Oct 14, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).