[Meta Launches Paid AI Developer Model Muse Spark 1.1 for the First Time] Meta has announced the launch of its first paid AI developer model, Muse Spark 1.1, a competitive agent-based and programming model in the industry. In multiple agent evaluations, its performance rivals that of GPT-5.5 and Opus-4.8. Starting today, it is available through the new Meta Model API and the Meta AI platform. Meta CEO Mark Zuckerberg stated that the pricing is planned to be lower than competitors. Meta also announced that each new Meta Model API account will receive a $20 credit.