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Composer 1.5 vs Codestral Mamba 7B

Cursor Composer 1.5 vs Mistral Codestral Mamba 7B — side-by-side specs.

Cursor
Composer 1.5
Mistral
Codestral Mamba 7B
Overview
CompanyCursorMistral
Release dateFeb 8 2026Jul 16 2024
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapCodestral Mamba 7B shipped 572 days before Composer 1.5

Which is better: Composer 1.5 or Codestral Mamba 7B?

Composer 1.5 and Codestral Mamba 7B do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Codestral Mamba 7B shipped 572 days before Composer 1.5, so benchmark comparisons should account for the intervening progress.

Codestral Mamba 7B 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 Codestral Mamba 7B released?
Codestral Mamba 7B was released by Mistral on Jul 16 2024.
Is Composer 1.5 or Codestral Mamba 7B open source?
Codestral Mamba 7B is an open-source / open-weight model released by Mistral. Composer 1.5 is a proprietary model released by Cursor.

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