Composer 2.5 vs Muse Spark
Cursor Composer 2.5 | Meta Muse Spark | |
|---|---|---|
| Overview | ||
| Company | Cursor | Meta |
| Release date | May 18 2026 | Apr 8 2026 |
| Access | Proprietary | Proprietary |
| Benchmarks | ||
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | — | 77.4% |
Multilingual coding SWE-Bench MultilingualLike SWE-Bench, but the coding problems span many programming languages, not just one. Tests how broadly the AI can code. Higher is better. | 79.8% | — |
Agentic coding CursorBench v3.1Cursor's own test of harder, real-world coding tasks inside a code editor. Higher is better. | 63.2% | — |
Next.js coding Next.js EvalsVercel's open eval of how well AI coding agents build and migrate real Next.js apps — measured as the share of tasks the agent completes successfully. Higher is better. | 92% | — |
Agentic terminal coding Terminal-Bench 2.0Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? (Version 2.0 of the test.) Higher is better. | 69.3% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | — | 89.5% |
Multimodal MMMUTests the AI on understanding images and text together across many college subjects. Higher is better. | — | 80.4% |
| Timeline | ||
| Release gap | Muse Spark shipped 40 days before Composer 2.5 | |
Which is better: Composer 2.5 or Muse Spark?
Composer 2.5 and Muse Spark don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Muse Spark shipped 40 days before Composer 2.5, 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 — Composer 2.5 and Muse Spark don't publish scores on any of the same benchmarks.
Frequently asked questions
Composer 2.5 was released by Cursor on May 18 2026.
Muse Spark was released by Meta on Apr 8 2026.
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