AI tools ·
Xiaomi opens MiMo-V2.6-Pro weights under MIT — the new top open-weights model
Xiaomi published full, ungated, MIT-licensed weights for MiMo-V2.6-Pro-RL and MiMo-V2.6-Flash-RL on Hugging Face on September 21, with no launch fanfare — the Flash checkpoint appeared around 15:39 UTC, the Pro weights seconds later. Pro is a 1.02-trillion-parameter sparse mixture-of-experts (42B active per token) with a 1-million-token context window and natively omnimodal input (text, image, video, and audio in; text out). The Flash sibling is a ~309B-total / 15B-active variant. Artificial Analysis ranks MiMo-V2.6-Pro as the world's highest-scoring open-weights model with an Intelligence Index of 46, ahead of DeepSeek V4.1 Flash.
The release ships with weights, a technical report, and deployment instructions. Xiaomi has committed to also publishing the training environments and RL code, but those were not in the repos at the time of reporting — one thing the coverage conflicts on, so don't download expecting the full training stack yet. There is also a Pro-UltraSpeed variant claiming up to 20× faster output at the same quality. Xiaomi-reported benchmarks include DeepSWE v1.1 scores of 71.9 (Pro) and 67.9 (Flash) and CyberGym scores of 94.0/95.1 — vendor-reported, with no independent rerun yet.
Press-reported API pricing holds at V2.5 levels: Pro at $0.435 per million uncached input tokens and $0.87 output; Flash at $0.14 and $0.28. One caveat: Xiaomi's own blog still shows no published price list for the new generation, so treat those figures as Xiaomi-stated rather than confirmed on a vendor price sheet.
Why it matters
This is the open-weights counterweight to the closed frontier releases arriving the same week: MIT-licensed weights you can download free and self-host, at the top of the open-weights leaderboard. For anyone who can't ship data to a US API — or just wants a frontier-grade coding agent on their own hardware — this is the new default download.
Sources
- Orcarouter — Xiaomi MiMo-V2.6-Flash release
- VentureBeat — Xiaomi's MiMo-V2.6-Pro debuts as the top open-weights model in the world
- TestingCatalog — Xiaomi open-sources MiMo-V2.6-Pro and Flash models
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