Meta's Muse Spark API Delays Leave Developers Waiting and Rivals Winning

Meta has repeatedly pushed back plans to release its Muse Spark AI model API to developers, and as of Tuesday had no scheduled launch date, the Wall Street Journal reported. The company postponed the API release from the original target of April to May, citing bugs discovered during testing and the need to build additional infrastructure. Meta first unveiled Muse Spark in April, describing it as the first model designed to narrow the gap with competitors — the initial release from its new Superintelligence Labs. That's a glaring bottleneck for a company spending up to $145 billion on AI infrastructure this year: without an API, Meta can't easily sell access to the model, ceding a lucrative monetization engine to rivals like OpenAI and Anthropic. A Meta spokesperson said the company is already testing the API with some early partners and is looking forward to releasing it this month.