Muse Spark 1.3 (xhigh) vs GPT-6 Astra

A direct, empirical evaluation of Muse Spark 1.3 (xhigh) (Meta AI) against GPT-6 Astra (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-6 Astra

Developed by OpenAI · Proprietary Frontier parameters

Complex multi-step engineering, formal math proofs, autonomous computer/browser navigation, and CAD synthesis.