Xiaomi releases MiMo-V2.6 Pro (1.02T MoE) and Flash under MIT license
Pro becomes the top open-weights model on Artificial Analysis
Confirmed
Importance: major (4 of 5)The takeaway
On Sept 21–22, 2026 Xiaomi released the MiMo-V2.6 series under the MIT license: Pro (1.02T total / 42B active MoE), Flash (~311B / 15B active), a Pro-UltraSpeed serving tier and a 9B Qwen distill.
Status
- Claim
Confirmed
- Our reporting
- High confidence
- Importance
- Major (4 of 5)
- Last verified
- 29 September 2026
Your AI and this story
- GPT-6 Astra144 days after its cutoff
- Claude Opus 5.583 days after its cutoff
- Gemini 4 Hydrogen174 days after its cutoff
- Grok 4.7113 days after its cutoff
None of these four assistants can know about it. The closest, Claude Opus 5.5, stops 83 days before it.
Key facts
- HF repos created Sept 21, 2026 (MiMo-V2.6-Pro-RL, -Flash-RL, Distill-Qwen-9B); press coverage Sept 22
- Pro: 1.02T total / 42B active parameters, 70 layers (60 sliding-window + 10 global attention); Flash: ~311B total / 15B active
- Context 1M tokens, max output 128K; input text, image, video, audio; output text; license MIT
- Artificial Analysis Intelligence Index: Pro 46 (top open-weights; ties Grok 4.7; DeepSeek V4.1 Flash 39) per VentureBeat
- Xiaomi-reported Pro benchmarks: DeepSWE v1.1 71.9, Terminal-Bench 2.1 89.9 (Opus 5: 89.1), AutomationBench 53.1, CyberGym 94.0, Agents’ Last Exam 31.6
- Pricing per 1M tokens: Pro $0.435 in / $0.87 out (¥3/¥6); Flash $0.14 / $0.28; Pro-UltraSpeed (~20x speed) $4.35 / $8.70 on OpenRouter
- RL post-training cost reported at ~$2.62M (Pro) and ~$850K (Flash); MOPD (multi-teacher on-policy distillation) variants added ~Sept 27
What happened
Xiaomi, better known for phones and cars, shipped a trillion-parameter open-weights MoE that leads open models on the main aggregate index, at prices far below US frontier models.
Why it matters
The top open-weights model now comes from a consumer-electronics company rather than DeepSeek, Qwen or Moonshot, and it is MIT-licensed. Benchmarks other than the AA Index are Xiaomi-reported.
Sources
6 sources from 5 sites. Numbers match the chips in the text.
6 sources: 4 primary, 2 press
Primary
- Xiaomi MiMo: MiMo-V2.6-Promimo.mi.com, official
- Hugging Face: MiMo-V2.6 collectionhuggingface.co, code
- Hugging Face: MiMo-V2.6-Pro-RLhuggingface.co, code
- Xiaomi MiMo on Xx.com, official
Press
- VentureBeat: Xiaomi’s MiMo-V2.6 Pro debuts as the top open-weights modelventurebeat.com, press
- SiliconANGLE: Xiaomi introduces MiMo-V2.6 seriessiliconangle.com, press
Changes
- Filed
