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Composer 1.5 vs Grok‑1.5

Cursor Composer 1.5 vs xAI Grok‑1.5 — side-by-side specs.

Cursor
Composer 1.5
xAI
Grok‑1.5
Overview
CompanyCursorxAI
Release dateFeb 8 2026Mar 29 2024
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapGrok‑1.5 shipped 681 days before Composer 1.5

Which is better: Composer 1.5 or Grok‑1.5?

Composer 1.5 and Grok‑1.5 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Grok‑1.5 shipped 681 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 Grok‑1.5 released?
Grok‑1.5 was released by xAI on Mar 29 2024.

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