Microsoft has unveiled two new on-device language models, Aion 1.0 Instruct and Aion 1.0 Plan, at its Build 2026 conference. Aion 1.0 Instruct is a small, efficient language model designed for everyday text tasks and will be released with open weights. Aion 1.0 Plan is a larger, 14-billion parameter model capable of agentic reasoning, tool-calling, and orchestrating sub-agents directly on capable Windows devices. AI
IMPACT These on-device models aim to enhance Windows' AI capabilities, potentially improving user experience and enabling new agentic workflows directly on personal devices.
RANK_REASON This is a new model release from a frontier lab (Microsoft) with specific model names and capabilities. [lever_c_demoted from frontier_release: ic=1 ai=1.0]
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