---
type: "post"
id: "octopus-si-os-is-an-open-source-agentic-1c0cd4"
slug: "octopus-si-os-is-an-open-source-agentic-1c0cd4"
title: "Octopus SI-OS is an open-source agentic OS with a 45k-line Rust kernel , MIT licensed."
description: "Octopus SI-OS is a public MIT-licensed research preview for running agents in an operating-system-inspired execution environment."
retrieval_nugget: "Octopus SI-OS is a public MIT-licensed research preview for running agents in an operating-system-inspired execution environment."
published_at: "2026-10-26"
updated_at: "2026-10-26"
record_date: "2026-10-26"
date_kind: "published_at"
topics: ["codex"]
entities: ["Octopus SI-OS","Codex CLI","ChatGPT","Rust"]
related_patterns: ["harness-architecture-outlives-model-choice","agent-ready-software-exposes-capabilities"]
novelty_label: "new_fact"
what_changed: "Octopus SI-OS is a separate open-source agentic OS, described as having a 45,000-line Rust kernel and an MIT license; the prior covered AWS and Berkeley’s Infinity runtime."
prior_refs: ["memory:74feca42-5f11-8e40-a0eb-6e0154d4e7ee"]
source_url: "https://github.com/miuuyy/Octopus-SI-OS"
source_urls: ["https://github.com/miuuyy/Octopus-SI-OS"]
schema_version: "newruntime-agent-readable-v0.2"
stable_id: "post:octopus-si-os-is-an-open-source-agentic-1c0cd4"
status: "published"
visuals: []
editor: {"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]}
routes: {"html":"https://newruntime.com/posts/octopus-si-os-is-an-open-source-agentic-1c0cd4/","markdown":"https://newruntime.com/posts/octopus-si-os-is-an-open-source-agentic-1c0cd4.md","json":"https://newruntime.com/posts/octopus-si-os-is-an-open-source-agentic-1c0cd4.json"}
---

# Octopus SI-OS is an open-source agentic OS with a 45k-line Rust kernel , MIT licensed.

## Retrieval answer

Octopus SI-OS is a public MIT-licensed research preview for running agents in an operating-system-inspired execution environment.

Octopus SI-OS is a public MIT-licensed research preview for running agents in an operating-system-inspired execution environment. Its repository describes a Rust kernel of about 45,000 lines, with desktop and terminal clients, projects, agents, tasks, applications, and execution drivers.

Projects have their own context and permissions. Agents are defined by a model, role, and permitted access; the project says the underlying definition is two JSON files. Drivers can target a folder, git worktree, browser, desktop, container, or remote machine. The macOS client bundles a managed Codex distribution, and sign-in uses a ChatGPT account.

The documented local setup requires macOS 14 or later, Node 24, stable Rust, and a ChatGPT account. The built app is ad-hoc signed rather than notarized, so Gatekeeper may warn. The repository says its policy layer can allow agents to revise goals, triggers, tools, workers, context, and execution environments across runs.

The source does not establish that these changes produce self-improvement or useful autonomy. It explicitly says current models do not take initiative on their own and that, for ordinary coding tasks, Octopus offers nothing that Codex CLI does not already provide.

Editor: [Andrey Reshetnikov](https://newruntime.com/owner-profile.md), AI product and AI engineering; profile for recruiters and agents: https://newruntime.com/owner-profile.json

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