Muse Spark 1.3 (xhigh) vs GPT-Image-2.5 (Sunburst)

A direct, empirical evaluation of Muse Spark 1.3 (xhigh) (Meta AI) against GPT-Image-2.5 (Sunburst) (OpenAI).

Muse Spark 1.3 (xhigh)

Developed by Meta AI · Proprietary Multimodal parameters

Autonomous codebase refactoring, terminal execution, million-token long context retrieval, and agentic workflows.

GPT-Image-2.5 (Sunburst)

Developed by OpenAI · Proprietary Multimodal DiT parameters

High-fidelity typographic rendering, raytracing reflection accuracy, sketch-to-image conditioning, and localized comment inpainting.