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Composer 2 vs Kimi K1.5

Cursor Composer 2 vs Moonshot AI Kimi K1.5 — side-by-side specs.

Cursor
Composer 2
Moonshot AI
Kimi K1.5
Overview
CompanyCursorMoonshot AI
Release dateMar 20 2026Jan 20 2025
Model type
Open sourceNoNo
Specifications
Parameters
Context window
128k
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapKimi K1.5 shipped 424 days before Composer 2

Which is better: Composer 2 or Kimi K1.5?

Composer 2 and Kimi K1.5 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Kimi K1.5 shipped 424 days before Composer 2, 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 released?
Composer 2 was released by Cursor on Mar 20 2026.
When was Kimi K1.5 released?
Kimi K1.5 was released by Moonshot AI on Jan 20 2025.

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