Mimo

MiMo is Xiaomi''s answer to the "big model, big price" problem that''s been frustrating developers and creators. Built on an innovative Mixture-of-Experts architecture with 309 billion total parameters but only activating 15 billion per task, it delivers the intelligence of a massive model at the speed and cost of a lightweight one—perfect for when you''re debugging code at 3 AM and need answers now, not in thirty seconds. Whether you''re building complex web applications, automating tedious workflows through intelligent agents, or solving intricate math problems, MiMo switches between deep thinking mode for hard problems and instant response for quick queries. It ranks in the global top 2 for coding and agent capabilities, matching Claude 4.5 Sonnet''s code quality at just 2.5% of the cost and twice the speed. With support for 256K context windows and hundreds of rounds of tool interactions, it handles real projects that other models choke on. Fully open-source under MIT license with API access starting at just $0.10 per million tokens, MiMo proves that world-class AI doesn''t need to drain your budget or test your patience.