# Gemini 3.1 Pro Preview vs GPT-5

As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5 in 8 of 8 shared categories: General LLM, Reasoning, Math, Science, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).

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

GPT-5: $3.4375000000000004 per 1M blended tokens.

Gemini 3.1 Pro Preview: closed weights.

GPT-5: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5 in General LLM at #15 against #95.
- Which to pick, Reasoning: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5 in Reasoning at #14 against #103.
- Which to pick, Math: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5 in Math at #3 against #15.
- Which to pick, Science: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5 in Science at #7 against #54.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5 in Coding › Web dev at #63 against #72.
- Which to pick, Long context: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5 in Long context at #12 against #142.
- Which to pick, Factuality: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5 in Factuality at #21 against #119.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GPT-5 in Abstraction (ARC) at #2 against #34.

As of Oct 15, 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 15, 2026, GPT-5 is a former state-of-the-art holder in General LLM (since Aug 27, 2025; sources LMArena Text (style-controlled, overall); methodology v1.0).