Xiaomi releases MiMo-V2.6 Pro (1.02T MoE) and Flash under MIT license; Pro becomes the top open-weights model on Artificial Analysis
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. Both main models have 1M context and omnimodal input. Pro scored 46 on the Artificial Analysis Intelligence Index, the highest for an open-weights model, tying Grok 4.7. API prices are $0.435/$0.87 (Pro) and $0.14/$0.28 (Flash) per 1M tokens.
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.
Changelog
- 2026-09-29: created
Models
- MiMo-V2.6-Flash Xiaomi · current
- MiMo-V2.6-Pro Xiaomi · current
Related posts (1)
- Xiaomi announces MiMo-V2.6 series Xiaomi MiMo @XiaomiMiMo · x · 2026-09-21
Launch post for the top open-weights model on Artificial Analysis at release.
Related events
- DeepSeek V4.1-Flash: new architecture family, native vision, cheaper API ★★★
- SpaceXAI releases Grok 4.7 with a new larger base model and new safeguard stack ★★★★
Sources (6)
- officialXiaomi MiMo: MiMo-V2.6-Pro
- codeHugging Face: MiMo-V2.6 collection
- codeHugging Face: MiMo-V2.6-Pro-RL
- officialXiaomi MiMo on X
- pressVentureBeat: Xiaomi's MiMo-V2.6 Pro debuts as the top open-weights model
- pressSiliconANGLE: Xiaomi introduces MiMo-V2.6 series
id: 2026-09-21-xiaomi-mimo-v2-6 · updated 2026-09-29 · open in the interactive timeline