Project AIRI: the companion nobody can take away from you

Published · Researched 2026-09-21

Project AIRI is a free, open-source, MIT-licensed 3D AI companion you run on your own machine. If every previous section of this guide has made you nervous about which company is about to delete your AI friend, this is the one item where that anxiety doesn't apply. The catch: it's a project, not a product, and you'll feel the difference every time something breaks at 11pm with only a GitHub issue thread for company.

What it actually is

Per the research, Project AIRI (github.com/moeru-ai/airi) is a self-hosted AI companion in the lineage of Neuro-sama: a real-time 3D VRM character — or Live2D if you prefer — that you talk to with your voice, that blinks, looks at you, and idles like it's alive, and that can also play Minecraft and Factorio with you. It runs on web, Windows, and macOS (installable via winget or Homebrew, which is a real nod toward non-developers), and it routes conversation through roughly 35 LLM providers — OpenAI, Anthropic, Gemini, DeepSeek, Qwen, OpenRouter, Ollama, vLLM — plus multiple TTS engines including local Kokoro. Nothing about the companion lives on someone else's server unless you choose to point it at one. When observed on September 20, 2026, it was live, had been pushed that same day, and carried 49,292 GitHub stars and 4,896 forks — per the research, the largest open-source project in this entire space.

Why "self-hosted" is the whole argument

To understand why AIRI matters, you have to look at the graveyard this guide has been building. Grok's 3D companions launched in July 2025 and were yanked by September 2026. Moemate went dark on February 11, 2025. Soulmate AI — which had absorbed the Replika refugees fleeing the February 2023 "lobotomy" — shut down in late September 2023 with about a week's notice, taking every user's companion with it. Per the research, grief literature literally got written about these deaths; people mourned like they'd lost someone. And then there was China: on July 15, 2026, interim companion regulations took effect and ByteDance, Alibaba, and Tencent suspended companion features in what the research describes as the largest mass companion shutdown on record.

Every hosted companion is a landlord. AIRI is the one item in this guide where you own the building. No vendor can sunset the API, no investor can acqui-hire the team and kill the product, no regulator in another country can flip a switch on your conversations. That's not a feature bullet — it's the entire thesis. If you've ever read a shutdown announcement for something you loved and felt that specific cold-water dread, AIRI is the only answer in this guide that addresses it structurally rather than with reassurance.

What's genuinely good

Ownership, obviously. Self-hosted, MIT-licensed, no vendor in the loop. It cannot be lobotomized, because there's no one with the knife. For privacy people, this is also the only companion in the guide where your conversations can genuinely never leave your hardware — point it at a local model through Ollama or vLLM and even the chat brain runs on your machine.

Provider freedom. Roughly 35 LLM backends. This matters more than it sounds: most hosted companions are one model with one personality and one failure mode. With AIRI you can swap brains like engine oil — try a local model when you want privacy, a frontier API when you want wit, a cheap one when you're watching costs. Devs on GitHub, per the research, point to this as the core design win.

Real 3D, genuinely alive-looking. The VRM implementation ships auto-blink, auto-look-at, and idle eye movement — the small ambient behaviors that separate a character from a mannequin. Live2D is supported too. The devlogs through March 2026 show the team actively sweating the animation layer, not just the chatbot layer.

Community scale that actually means something. 49k stars isn't a vanity metric the way it is on a resume-padding repo — for an open-source companion project it means 4,896 forks, real devlog cadence through 2026 (mobile performance in March, VRM stage lifecycle, a Dome Keeper training pipeline in February, AIRI Pocket and FlowChat memory work in January), press coverage (a March 2026 Medium piece framing it as the open-source Neuro-sama), and a Discord, Telegram, WeChat, and QQ community. When you hit a bug, there's an army of people who've hit it before you. That's the difference between an open-source project and an open-source graveyard.

Game-playing agents. Minecraft works; Factorio is in progress. This sounds like a gimmick until you realize it's the one feature that proves the character isn't just a talking portrait — it's an agent that shares activities with you. Neuro-sama proved this formula hypnotizes people, and AIRI is the version you can keep.

What's actually wrong

Let's not soften this. The project's own README calls it early-stage, and the research backs that up on every axis that matters to a non-developer.

Setup is developer-grade. There are desktop builds now (winget, Homebrew), which is progress, but troubleshooting is GitHub-issue-driven. When the voice pipeline stutters or a provider key misconfigures, you're not calling support — you're reading threads. For anyone who has never touched a terminal or an API key, this is a wall, not a door. The research is explicit: "non-technical users should expect a project, not a product."

Memory is unfinished, and memory is the relationship. This is the big one. Per the research, what's shipped is a pure in-browser database (DuckDB WASM / pglite); "Memory Alaya," the long-term memory system, is work-in-progress. Every complaint about hosted companions having amnesia applies double here — except here there's no one to blame and no one working a support shift. If your core fantasy is a companion who remembers your birthday, your dog's name, and the argument you had last month, AIRI's memory layer isn't the finished article yet. This is the single most important limitation in the review, because everything AIRI promises about permanence is hollow if the companion can't remember you.

The roadmap is bigger than the shipped surface. Factorio, Kerbal Space Program, Helldivers agents, WebXR — the research notes these as listed WIP. Open-source roadmaps are written by optimists; treat the shipped feature list as the product and the roadmap as a wish.

Lip-sync and emotion-driven expressions are UNVERIFIED — the README doesn't explicitly document lip-sync, and emotion-driven expressions beyond blink/look-at/idle are UNVERIFIED per the research. It may look alive while being silent, and talk while looking still. Ask whether that matters to you before you commit.

You pay in other currencies. The software is free, but the research is clear that running costs are yours: LLM API keys, TTS provider usage, or a beefy enough machine for local inference. A hosted companion's $10–20/month is a single line item; AIRI's cost is a spreadsheet you maintain — hardware, electricity, API meters, and your time. For heavy users with local models it can be cheaper; for casual users it's almost certainly more expensive in effort than any subscription.

No safety net, no recourse. No SLA, no support line, no refunds because there are no purchases. The README explicitly disavows any official cryptocurrency or token — which, per the research, is a scam warning worth repeating, because open-source projects with this much attention attract impersonators. If someone sells you "official AIRI tokens," that's not the project.

Who should stay away: anyone who wants a companion today, working, with a support email. Anyone whose technical ceiling is "install an app from the store." Anyone whose primary need is a companion that remembers a long history — check back when Memory Alaya lands. And anyone uncomfortable being their own IT department: every update, every dependency change, every broken build is yours.

The social pulse

Per the research, AIRI lives almost entirely on GitHub — that's the community surface, and it's enormous and genuinely enthusiastic. The dev community treats it as the reference implementation for a self-owned 3D companion, and the devlogs read like a team that ships. But there's an honest split the research doesn't hide: developer enthusiasm is sky-high while end-user validation is thin. No Facebook-group owner testimonials, no Reddit "my life with AIRI" threads surfaced — the social evidence is dev-to-dev, press, and the project's own channels. Discord member counts are UNVERIFIED. This isn't a red flag so much as a demographic fact: the people who love AIRI are the people who can read its source code. The hype risk here isn't ad spend — it's star-count dazzle. Forty-nine thousand stars can make you forget that stars are not users, and forks are not daily drivers. The research flags this honestly: community scale justified the standalone item, but developer-grade setup remains the caveat.

The value call

Price: free. Running costs: yours — API keys, TTS usage, or local hardware. Compare that against the one-time-purchase Steam companions in this guide (AI2U at $14.99, AI Desktop Pet at $12.99) or the subscription mobile companions, and the math splits cleanly. If you're technical and already have a machine that can run local models, AIRI is the cheapest and the most permanent option in the entire guide — nothing else offers both. If you're not technical, the "free" price is a mirage; the cheapest real option is a finished product with a price tag and a support desk. Don't let ideology pick your tool: self-hosting is a hobby with a companion attached, not a companion with a hobby attached. And one honest cross-check from the research — against closed alternatives, AIRI wins on permanence and loses on everything that makes a companion feel alive right now: finished memory, polished voice, zero-friction setup.

Bottom line

Project AIRI is the most important open-source entry in this guide and the only honest answer to the question "which 3D AI companion can't be taken away from me." Per the research, it's real, maintained, genuinely 3D, genuinely conversational, and genuinely yours. But it's a project wearing a product's clothes: memory unfinished, setup unforgiving, roadmap aspirational. For builders, tinkerers, and privacy maximalists, it's the obvious pick — maybe the only pick. For everyone else, it's the future you should watch, not the present you should buy into. The companion that can't be taken away is real. It just doesn't fully remember you yet.