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Composer 1.5 vs LLaMA 3.1

Cursor Composer 1.5 vs Meta LLaMA 3.1 — side-by-side specs.

Cursor
Composer 1.5
Meta
LLaMA 3.1
Overview
CompanyCursorMeta
Release dateFeb 8 2026Jul 23 2024
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapLLaMA 3.1 shipped 565 days before Composer 1.5

Which is better: Composer 1.5 or LLaMA 3.1?

Composer 1.5 and LLaMA 3.1 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. LLaMA 3.1 shipped 565 days before Composer 1.5, so benchmark comparisons should account for the intervening progress.

LLaMA 3.1 is an open-source / open-weight model; Composer 1.5 is proprietary.

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 LLaMA 3.1 released?
LLaMA 3.1 was released by Meta on Jul 23 2024.
Is Composer 1.5 or LLaMA 3.1 open source?
LLaMA 3.1 is an open-source / open-weight model released by Meta. Composer 1.5 is a proprietary model released by Cursor.

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