Model family timeline
Last updated Apr 22, 2026
MiMo model releases
A source-backed timeline for the MiMo model family, collecting release dates, labs, access details, context windows, and major lifecycle changes.
Most recent in this set
2 models
MiMo-V2.5-Pro
AvailableXiaomi's open-weight flagship: a 1.02T-parameter Mixture-of-Experts model with ~42B active parameters, a hybrid-attention architecture, and a 1M-token context window. Tuned for frontier-class agentic coding and long-horizon tasks (sustaining 1000+ tool calls with a proper harness). Open-sourced under the MIT license with weights and tokenizer on Hugging Face.
MiMo-V2.5
AvailableXiaomi's open-weight sparse-MoE model: ~310B total parameters with ~15B active, trained on ~48T tokens, with a 1M-token context window. Shipped alongside the larger MiMo-V2.5-Pro under the MIT license.