Xiaomi Releases MiMo-V2.5-Pro: 1T-Parameter Open-Source Model Under MIT License Challenges Frontier Labs on Agentic Tasks

VentureBeat·high signal

Xiaomi open-sourced MiMo-V2.5-Pro (1.02T total params, 42B active) under MIT license with 1M token context. The model achieves 63.8% success on agentic 'claw' tasks using ~70K tokens per trajectory — 40-60% fewer tokens than Claude Opus 4.6 or GPT-5.4 for comparable results. In demos it built a complete SysY compiler in Rust in 4.3 hours with 672 tool calls. This is the most capable fully open-source agentic model released to date.