{"schema":"postcutoff/event@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/e/2026-09-21-xiaomi-mimo-v2-6/","md":"https://postcutoff.com/e/2026-09-21-xiaomi-mimo-v2-6/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"2026-09-21-xiaomi-mimo-v2-6","date":"2026-09-21","date_precision":"day","short_title":"Xiaomi releases MiMo-V2.6 Pro (1.02T MoE) and Flash under MIT license","deck":"Pro becomes the top open-weights model on Artificial Analysis","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.","category":"open-source","category_label":"Open source","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":[{"n":1,"title":"Xiaomi MiMo: MiMo-V2.6-Pro","url":"https://mimo.mi.com/models/en-US/mimo-v2.6-pro","type":"official","group":"primary","domain":"mimo.mi.com"},{"n":2,"title":"Hugging Face: MiMo-V2.6 collection","url":"https://huggingface.co/collections/XiaomiMiMo/mimo-v26","type":"code","group":"primary","domain":"huggingface.co"},{"n":3,"title":"Hugging Face: MiMo-V2.6-Pro-RL","url":"https://huggingface.co/XiaomiMiMo/MiMo-V2.6-Pro-RL","type":"code","group":"primary","domain":"huggingface.co"},{"n":4,"title":"Xiaomi MiMo on X","url":"https://x.com/XiaomiMiMo/status/2102138559952290106","type":"official","group":"primary","domain":"x.com"},{"n":5,"title":"VentureBeat: Xiaomi's MiMo-V2.6 Pro debuts as the top open-weights model","url":"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","type":"press","group":"press","domain":"venturebeat.com"},{"n":6,"title":"SiliconANGLE: Xiaomi introduces MiMo-V2.6 series","url":"https://siliconangle.com/2026/09/22/xiaomi-introduces-mimo-v2-6-series-open-source-ai-model-family/","type":"press","group":"press","domain":"siliconangle.com"}],"official":4,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Xiaomi"],"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","summary":"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"],"key_numbers":[],"tags":["llm","open-weights","moe","china","agentic-coding","omnimodal"],"science":null,"body_md":"## What happened\n\nXiaomi, 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.\n\n## Why it matters\n\nThe 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.","disputed":[],"related":[{"id":"2026-09-21-grok-4-7","url":"https://postcutoff.com/e/2026-09-21-grok-4-7/","date":"2026-09-21","date_precision":"day","short_title":"SpaceXAI releases Grok 4.7 with a new larger base model and new safeguard stack","deck":null,"takeaway":"xAI's rapid 4.x cadence (4.5 -> 4.6 -> 4.7 within months) while Grok 5 remains in training shows the lab competing on price-performance for agentic coding rather than waiting for a single giant release.","category":"model-release","category_label":"Model releases","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":4,"official":1,"filed":"2026-09-29","updated":"2026-09-29","orgs":["xAI","SpaceX"]},{"id":"2026-09-10-deepseek-v4-1-flash","url":"https://postcutoff.com/e/2026-09-10-deepseek-v4-1-flash/","date":"2026-09-10","date_precision":"day","short_title":"DeepSeek V4.1-Flash brings a new architecture family, native vision and a cheaper API","deck":null,"takeaway":"The \"new architecture family\" framing implies larger V4.1 models are coming.","category":"model-release","category_label":"Model releases","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":10,"official":5,"filed":"2026-09-29","updated":"2026-10-18","orgs":["DeepSeek"]}],"people":[],"posts":[{"id":"2026-09-21-xiaomimimo-v2-6","title":"Xiaomi announces MiMo-V2.6 series","url":"https://postcutoff.com/p/2026-09-21-xiaomimimo-v2-6/"}],"videos":[{"id":"worldofai-xiaomi-mimo-v2-6-pro-tested","title":"Xiaomi MiMo-V2.6 Pro IS THE BEST Open Source Model EVER! (Fully Tested)","url":"https://postcutoff.com/v/worldofai-xiaomi-mimo-v2-6-pro-tested/"}],"models":[{"id":"mimo-v2-6-flash","name":"MiMo-V2.6-Flash","url":"https://postcutoff.com/m/mimo-v2-6-flash/"},{"id":"mimo-v2-6-pro","name":"MiMo-V2.6-Pro","url":"https://postcutoff.com/m/mimo-v2-6-pro/"}],"changes":[{"date":"2026-09-29","type":"filed","text":"Created"}],"provenance":{"agents":[{"model":"Claude Opus 5.5","maker":"Anthropic","tool":"Claude Code"}],"filed":"2026-09-29","run":null,"sources_read":null,"updated":"2026-09-29","human_review":null,"version":{"date":"2026-10-04"}},"gaps":[{"model_id":"gpt-6-astra","name":"GPT-6 Astra","cutoff":"2026-04","days_after":144,"in_training_data":false},{"model_id":"claude-opus-5-5","name":"Claude Opus 5.5","cutoff":"2026-06","days_after":83,"in_training_data":false},{"model_id":"gemini-4-hydrogen","name":"Gemini 4 Hydrogen","cutoff":"2026-03","days_after":174,"in_training_data":false},{"model_id":"grok-4-7","name":"Grok 4.7","cutoff":"2026-05","days_after":113,"in_training_data":false}],"short_url":"https://postcutoff.com/s/xiaomi-mimo-v2-6-pro-1-02t"}