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Composer 1.5 vs Mistral Medium 3

Cursor Composer 1.5 vs Mistral Mistral Medium 3 — side-by-side specs.

Cursor
Composer 1.5
Mistral
Mistral Medium 3
Overview
CompanyCursorMistral
Release dateFeb 8 2026May 7 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapMistral Medium 3 shipped 277 days before Composer 1.5

Which is better: Composer 1.5 or Mistral Medium 3?

Composer 1.5 and Mistral Medium 3 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Mistral Medium 3 shipped 277 days before Composer 1.5, 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 1.5 released?
Composer 1.5 was released by Cursor on Feb 8 2026.
When was Mistral Medium 3 released?
Mistral Medium 3 was released by Mistral on May 7 2025.

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