# Gemini 3.1 Pro Preview vs GLM 5.3

As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GLM 5.3 in 5 of 6 shared categories: General LLM, Reasoning, Science, Long context, and Factuality.

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

GLM 5.3: $1.275 per 1M blended tokens.

Gemini 3.1 Pro Preview: closed weights.

GLM 5.3: open weights.

- Which to pick, General LLM: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GLM 5.3 in General LLM at #15 against #24.
- Which to pick, Reasoning: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GLM 5.3 in Reasoning at #14 against #19.
- Which to pick, Science: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GLM 5.3 in Science at #7 against #28.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, GLM 5.3 leads Gemini 3.1 Pro Preview in Coding › Web dev at #20 against #63.
- Which to pick, Long context: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GLM 5.3 in Long context at #12 against #31.
- Which to pick, Factuality: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads GLM 5.3 in Factuality at #21 against #31.

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, GLM 5.3 is tied for state of the art in General LLM (since Oct 13, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).