Meta launches Muse assistant: features and security design
Muse, powered by Muse Spark 1.3, connects to email, calendars, shopping and payments and keeps working after the app closes, with 100M free tokens per week and approval required for sensitive actions.




Meta just released Muse AI assistant for personal tasks, powered by Muse Spark 1.3, Meta's latest model for longer-horizon agentic work - it can connect to email, calendars, shopping, payments and other services, then keep working after the app closes. - each user gets a Muse Secure VM, with a separate Sentinel agent that checks outbound data and actions before they reach the network. - Meta is making Muse free to use for up to 100M tokens per week, with subscription plans for people who use more compute - Sensitive actions such as purchases or emails require user approval, while credentials stay in Secure Credential Storage so Muse cannot read passwords or payment details. - the model, Muse harness, deterministic code and classifiers screen prompt injections before hostile content can enter the model's context. - currently it launches for U.S. users on web, iOS, Android and WhatsApp, with free access plus $20 and $100 monthly tiers for heavier usage. - the security design moves the trust boundary beyond model behavior into VM isolation, credential separation and a kernel-enforced gate on network actions.
This post quotes another post: “Zuckerberg unveils Muse, Meta's personal agent”