Meta introduces Muse Ember to power cost-efficient AI agents

Meta launched Muse Ember on November 9, 2026, as the smallest, most cost‑efficient model in its family, designed for repetitive agent tasks such as tool calls, coding subtasks, routing, extraction, and long‑document parsing. The company claims it delivers more intelligence per dollar than Claude Haiku 5.5 or GPT‑6 Luna at any reasoning setting. Muse Ember completes a three‑tier lineup that enables a division of labor across Meta’s AI offerings.