Meta ships Muse Wonder for long-running coding agents

Meta put two new models in front of developers on October 12, 2026. Muse Wonder is available in Muse Code and through the Meta Model API. The posted price is four dollars per million input tokens and twenty dollars per million output tokens, with cached input at twenty cents per million. Muse Wonder Full, which Meta presents as the stronger model, is not on that public API price in this launch. It is included with the Power Usage plan and a new Maximum Usage plan inside Muse Code.

The Maximum plan is described as eighty times the Everyday Usage limit, and it keeps the same five-hour and weekly resets used by the other plans. Meta's developer post frames the models around long tasks: planning work, handing pieces to sub-agents, and recovering when a step fails. Subscribers who want the larger model start in the coding product, on the Power or Maximum plan, rather than through a metered API key. The post also points readers at a separate research write-up for how the models were trained.

Why it matters

Meta is selling agent-style coding as a subscription product, with a public API price next to it.

Source: Meta