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Composer 2.5 vs Gemini 3.1 Pro

0 vs 2 benchmarks won

Cursor
Composer 2.5
Google
Gemini 3.1 Pro
Overview
CompanyCursorGoogle
Release dateMay 18 2026Feb 19 2026
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
94.3%
Software engineering
SWE-Bench Verified
80.6%
Multimodal understanding
MMMU
Timeline
Release gapGemini 3.1 Pro shipped 88 days before Composer 2.5

Which is better: Composer 2.5 or Gemini 3.1 Pro?

Gemini 3.1 Pro leads Composer 2.5 on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Gemini 3.1 Pro shipped 88 days before Composer 2.5, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

Frequently asked questions

When was Composer 2.5 released?
Composer 2.5 was released by Cursor on May 18 2026.
When was Gemini 3.1 Pro released?
Gemini 3.1 Pro was released by Google on Feb 19 2026.

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