According to Ethan Mollick on X, Meta's Muse Spark Thinking underperforms compared with the current Big Three models, exhibiting odd tone and occasional factual looseness, and falls short on a neo-gothic shader coding task in twigl compared with leading models (source: Ethan Mollick on X, Apr 9, 2026). As reported by Mollick, earlier benchmarks he shared showed GPT 5.2 Pro generating a single-shot shader for an infinite neo-gothic city partially submerged in a stormy ocean, suggesting stronger code synthesis and visual reasoning than Muse Spark Thinking on the same prompt (source: Ethan Mollick on X). According to Mollick, these results indicate practical implications for developers: teams needing reliable shader generation, graphics prototyping, or complex code synthesis may achieve higher productivity with top-tier models while monitoring Muse Spark Thinking for improvements in factuality and stylistic control (source: Ethan Mollick on X).