---
id: "2026-09-21-xiaomi-mimo-v2-6"
url: "https://postcutoff.com/e/2026-09-21-xiaomi-mimo-v2-6/"
as_of: "2026-11-13T13:49:00+01:00"
date: "2026-09-21"
date_precision: day
category: open-source
importance: 4
confidence: high
status: [Confirmed]
sources: 6
editor: human editor
human_review: null
version: "2026-10-04"
---

As of: 2026-11-13 13:49 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/e/2026-09-21-xiaomi-mimo-v2-6/

# Xiaomi releases MiMo-V2.6 Pro (1.02T MoE) and Flash under MIT license

Full title: 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.

## Your AI and this story

- GPT-6 Astra (training cutoff April 2026): 144 days after its cutoff
- Claude Opus 5.5 (training cutoff June 2026): 83 days after its cutoff
- Gemini 4 Hydrogen (training cutoff March 2026): 174 days after its cutoff
- Grok 4.7 (training cutoff May 2026): 113 days after its cutoff

## Sources

1. [Xiaomi MiMo: MiMo-V2.6-Pro](https://mimo.mi.com/models/en-US/mimo-v2.6-pro) (mimo.mi.com, official)
2. [Hugging Face: MiMo-V2.6 collection](https://huggingface.co/collections/XiaomiMiMo/mimo-v26) (huggingface.co, code)
3. [Hugging Face: MiMo-V2.6-Pro-RL](https://huggingface.co/XiaomiMiMo/MiMo-V2.6-Pro-RL) (huggingface.co, code)
4. [Xiaomi MiMo on X](https://x.com/XiaomiMiMo/status/2102138559952290106) (x.com, official)
5. [VentureBeat: Xiaomi's MiMo-V2.6 Pro debuts as the top open-weights model](https://venturebeat.com/technology/better-than-deepseek-xiaomis-mimo-v2-6-pro-debuts-as-the-top-open-weights-model-in-the-world-alongside-cheaper-v2-6-flash) (venturebeat.com, press)
6. [SiliconANGLE: Xiaomi introduces MiMo-V2.6 series](https://siliconangle.com/2026/09/22/xiaomi-introduces-mimo-v2-6-series-open-source-ai-model-family/) (siliconangle.com, press)

## Changes

- 2026-09-29 (filed): Created

## Related

- 2026-09-21: [SpaceXAI releases Grok 4.7 with a new larger base model and new safeguard stack](https://postcutoff.com/e/2026-09-21-grok-4-7/index.md)
- 2026-09-10: [DeepSeek V4.1-Flash brings a new architecture family, native vision and a cheaper API](https://postcutoff.com/e/2026-09-10-deepseek-v4-1-flash/index.md)
- Models: [MiMo-V2.6-Flash](https://postcutoff.com/m/mimo-v2-6-flash/) (`mimo-v2-6-flash`), [MiMo-V2.6-Pro](https://postcutoff.com/m/mimo-v2-6-pro/) (`mimo-v2-6-pro`)
- Archived: 1 post and 1 video, listed in https://postcutoff.com/e/2026-09-21-xiaomi-mimo-v2-6/index.json