Been digging into the numbers on this one. Muse Spark 1.1 (Meta's new model, first one they've ever actually charged for API access) is priced at $1.25/$4.25 per million tokens. Compare that to Opus 4.8 ($5/$25) or GPT-5.5 ($5/$30) and it's not close, 4x cheaper on input, 6-7x on output. Genuinely useful if you're building something that doesn't need the absolute smartest model for every call. Not everything needs the frontier flagship, cheap-but-good-enough is a real category and Meta wasn't re...