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Composer 2.5 vs Grok‑1

Cursor Composer 2.5 vs xAI Grok‑1 — side-by-side specs.

Cursor
Composer 2.5
xAI
Grok‑1
Overview
CompanyCursorxAI
Release dateMay 18 2026Nov 3 2023
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Multilingual coding
SWE-Bench Multilingual
79.8%
Agentic coding
CursorBench v3.1
63.2%
Agentic terminal coding
Terminal-Bench 2.0
69.3%
Timeline
Release gapGrok‑1 shipped 927 days before Composer 2.5

Which is better: Composer 2.5 or Grok‑1?

Composer 2.5 and Grok‑1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok‑1 shipped 927 days before Composer 2.5, so benchmark comparisons should account for the intervening progress.

Grok‑1 is an open-source / open-weight model; Composer 2.5 is proprietary.

Direct benchmark comparisons are unavailable — Composer 2.5 and Grok‑1 don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Composer 2.5 released?
Composer 2.5 was released by Cursor on May 18 2026.
When was Grok‑1 released?
Grok‑1 was released by xAI on Nov 3 2023.
Is Composer 2.5 or Grok‑1 open source?
Grok‑1 is an open-source / open-weight model released by xAI. Composer 2.5 is a proprietary model released by Cursor.

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