Xiaomi's September 2026 flagship reasoning model — a 1.02-trillion-parameter Mixture-of-Experts model (about 42B active) that briefly topped the open-weight field on independent benchmarks, shipped as MIT-licensed weights with a roughly million-token context and omni-modal input.
Last verified · 2026-09-22 · by Moe Ameen
MiMo-V2.6-Pro is the flagship model in Xiaomi's MiMo-V2.6 series, released September 22, 2026. It is a reasoning model with a Mixture-of-Experts architecture — roughly 1.02 trillion total parameters with about 42 billion active per token — which is how it delivers frontier-adjacent reasoning without a frontier's inference cost. It takes text, images, audio, and video as input, outputs text (up to around 128,000 tokens), and carries a context window of roughly one million tokens. Like a modern chain-of-thought model, it reasons before it answers.
Pro is the variant that made headlines. At launch it scored 46 on the Artificial Analysis Intelligence Index, tying Grok 4.7, taking the top slot among open-weight models and landing roughly sixth overall — within reach of the closed frontier. Its agentic and coding results were the standout: reported figures of 89.9% on Terminal Bench 2.1, 94.0% on CyberGym, and 71.9% on DeepSWE v1.1. Just as important as the scores is how it shipped — Xiaomi published the weights on Hugging Face under an MIT license (commercial use and self-hosting of the trillion-parameter flagship permitted), alongside a distilled 9-billion-parameter variant, a technical report, and a large set of reinforcement-learning environments, framing the release as a reproducible training stack rather than a bare weight drop.
You can reach MiMo-V2.6-Pro through Xiaomi's own MiMo API platform and third-party gateways such as OpenRouter, using a standard chat-completions interface with tool use and structured output, or download it and run it on your own hardware. Two honest caveats from independent testing: on the hosted API its serving speed measured below the median (around 55 tokens per second) and its output ran verbose, and self-hosting a trillion-parameter checkpoint takes serious GPU infrastructure even though the weights are free. Because the model is new, treat exact pricing and benchmark scores as a snapshot and confirm them on Xiaomi's official pages.
MiMo-V2.6-Pro's real edge is not that it drafts a caption — the cheaper Flash tier can do that — it is that it reasons and plans. Give it your audience data, a quarter of analytics, or a messy research folder and it will think through the whole thing agentically and hand back a genuine content strategy: the angles worth making, the sequence to make them in, the hooks that fit each platform. Because the weights are MIT-licensed, you can even run that strategist on your own hardware and own it outright. But a strategy no one sees is worthless, and MiMo-Pro stops at the plan — it composes nothing, brands nothing, and publishes nothing. [Kompozy](/) is the execution layer that turns the plan into the posts.
Concretely: let MiMo-Pro reason over the source and produce the brief, then hand that brief and the underlying material to Kompozy. Set a [Persona Brief](/glossary/persona-brief) so voice, terminology, and banned words govern every output, and Kompozy fans the plan into the formats the model can't touch — [Clipped Shorts](/glossary/clipped-short) cut from a long video at its strongest moments, captioned [Persona Shorts](/glossary/persona-shorts) and brand-exact [Persona Frames](/glossary/persona-frames) fronted by a face-locked avatar, brand-exact [Carousel Posts](/glossary/hyperframes), Photo Posts, Quote Graphics, a Blog Article, and an Email Newsletter. Then [Autopilot](/glossary/autopilot) schedules and publishes the whole set across the eight social platforms plus blog and email, each behind a per-post review gate. And on Kompozy's Founding tier you can bring your own model key — so MiMo-Pro can literally be the reasoning engine inside this pipeline, the strategist and the studio on one line.
It is the flagship model in Xiaomi's MiMo-V2.6 series, released September 22, 2026 — a Mixture-of-Experts reasoning model with roughly 1.02 trillion total parameters (about 42 billion active), omni-modal input, a roughly million-token context, and MIT-licensed open weights. At launch it took the top open-weight slot on the Artificial Analysis Intelligence Index.
Hard reasoning and agentic work. It scored 46 on the Artificial Analysis Intelligence Index (level with Grok 4.7) and posted strong coding and agentic benchmarks — a reported 89.9% on Terminal Bench 2.1 and 94.0% on CyberGym. Independent testing did flag below-average serving speed and verbose output on the hosted API.
Not directly. MiMo-Pro is a reasoning model — it reasons and drafts text, and reads images, audio, and video, but it does not caption clips, build carousels, generate persona video, keep a face consistent, or publish. To turn its output into finished, scheduled posts across platforms, pair it with a content engine like Kompozy.
The weights are free under an MIT license, so you can self-host at your own compute cost. On the hosted API it was priced at roughly $0.435 per million input tokens and $0.87 per million output tokens at launch. Confirm current rates on Xiaomi's MiMo pages or your gateway.
Use MiMo-Pro for the reasoning and strategy step, then run the same source through Kompozy: set a Persona Brief for your voice, let it generate Clipped Shorts, persona/avatar video, carousels, photo posts, quote graphics, a blog, and a newsletter, and let Autopilot schedule and publish across the eight social platforms plus blog and email. On the Founding tier you can bring your own MiMo key to run that reasoning step inside Kompozy.