Meta offers ~95% discount on Muse Spark for sharing prompts

Meta is offering users of its new Muse Spark coding-agent model a discount averaging about 95% in exchange for letting Meta collect their prompts and model outputs to train future models. The data-sharing arrangement is explicit and tied directly to pricing.

Why it matters: Pricing data access this steeply signals how valuable real-world agentic usage data has become for training coding models, since synthetic and benchmark data alone haven't kept pace with frontier capability gains. It also sets a template other labs may follow — trading API price for training-data rights — which could push users toward whichever provider offers the cheapest data-sharing tier rather than the best model.