Meta offers ~95% discount on Muse Spark if you let it train on your prompts and outputs

Meta is paying to peek at how you use their latest AI model

Meta put a price on data sharing. For Muse Spark, a model aimed at coding and agent workflows, standard pricing is $1.25 per 1M input tokens and $4.25 per 1M output tokens. Users who agree to share prompts and outputs for future model training get contributor pricing: $0.10 input, $0.20 output — roughly a 95% discount. The post doesn't say how long data is kept, whether you can opt out later, or how enterprise compliance is handled.

Why it matters: Meta's pricing for Muse Spark is a signal worth discussing: near-free access in exchange for real usage data. Hits all three HKR axes, but the post doesn't disclose data retention or downstream use limits, capping the score at 78.