Muse Spark vs GPT-5.6 Luna
Meta Muse Spark | OpenAI GPT-5.6 Luna | |
|---|---|---|
| Overview | ||
| Company | Meta | OpenAI |
| Release date | Apr 8 2026 | Jun 26 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% | — |
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 79 days before GPT-5.6 Luna | |
Which is better: Muse Spark or GPT-5.6 Luna?
Muse Spark and GPT-5.6 Luna don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Muse Spark shipped 79 days before GPT-5.6 Luna, 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 — Muse Spark and GPT-5.6 Luna don't publish scores on any of the same benchmarks.
Frequently asked questions
Muse Spark was released by Meta on Apr 8 2026.
GPT-5.6 Luna was released by OpenAI on Jun 26 2026.
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