Meta's API keeps getting delayed, not opening until 2026, and it’s closed source with hidden priorities. Zuck probably plans to get his own app subscriptions running first, then gradually open up? Renting out excess computing power when there's surplus—he's thinking pretty far ahead.

CoinWorld reports that Meta has repeatedly delayed the opening of the Muse Spark API, planning to release it publicly in June 2026. It is currently still in testing, and the delay has raised questions about its ability to monetize its massive AI investments. Muse Spark is a closed-source model; developers can only access it via API, with the blueprint and weights not disclosed. Internal testing is on par with OpenAI and Anthropic, with most tests surpassing XAI Grok. Since the API cannot be sold, Meta is sharing costs by launching paid subscriptions on Instagram, WhatsApp, Facebook, and Meta AI bots. Zuckerberg stated that in the future, excess computing power might be rented out in the cloud.