# O3 Code

> Run 10+ parallel coding agents on your machine

O3 Code is an open-source desktop application that lets developers run multiple AI coding agents in parallel, each in its own isolated Git worktree. It works with any CLI-based agent including Claude Code, OpenCode, and OpenAI Codex. Agents can work on different branches or features simultaneously without conflicts. O3 Code is free, does not proxy API calls, and supports macOS with Windows and Linux coming soon.

## Docs

- [Documentation](https://docs.code.o3.dev)
- [Getting Started](https://docs.code.o3.dev/getting-started)
- [GitHub](https://github.com/o3dotdev/o3-code)

## Blog

- [You Don't Need Another AI Coding Agent — You Need an Orchestrator](https://code.o3.dev/blog/agent-orchestration-not-another-agent)
- [The Complete Guide to Running Parallel AI Coding Agents](https://code.o3.dev/blog/parallel-coding-agents-guide)
- [Working with Git Worktrees in O3 Code](https://code.o3.dev/blog/working-with-worktrees-in-o3-code)
- [Our plan for running 100 Parallel Coding Agents](https://code.o3.dev/blog/roadmap-to-100-agents)
- [How to get hit (probably in the face but anywhere else works too)](https://code.o3.dev/blog/how-to-get-hit)
- [Git Worktrees: The Feature That Waited a Decade for Its Moment](https://code.o3.dev/blog/git-worktrees-history-deep-dive)
- [The Terminal That (Almost) Never Dies: Building a Persistent Terminal Daemon for Electron](https://code.o3.dev/blog/terminal-daemon-deep-dive)

## Comparisons

- [O3 Code vs T3 Chat (2026): Agent Orchestration vs Multi-Model AI Chat](https://code.o3.dev/compare/o3-code-vs-t3-chat)
- [Best Terminal for AI Coding Agents in 2026](https://code.o3.dev/compare/best-terminal-for-ai-coding)
- [How to Run Multiple Claude Code Agents in Parallel](https://code.o3.dev/compare/multiple-claude-code-agents-parallel)
- [Best AI Coding Tools and Agents (2026): Complete Comparison](https://code.o3.dev/compare/best-ai-coding-agents-2026)
- [O3 Code vs Claude Code (2026): Agent Orchestrator vs AI Coding Agent](https://code.o3.dev/compare/o3-code-vs-claude-code)
- [O3 Code vs Codex CLI (2026): Agent Orchestrator vs OpenAI's Coding Agent](https://code.o3.dev/compare/o3-code-vs-codex)
- [O3 Code vs Devin (2026): Local Agent Orchestration vs Cloud AI Engineer](https://code.o3.dev/compare/o3-code-vs-devin)
- [O3 Code vs GitHub Copilot (2026): Agent Orchestration vs AI Pair Programmer](https://code.o3.dev/compare/o3-code-vs-github-copilot)
- [O3 Code vs Windsurf (2026): Parallel Agent Orchestration vs AI IDE](https://code.o3.dev/compare/o3-code-vs-windsurf)
- [O3 Code vs Conductor (2026): Comparing AI Agent Orchestration Platforms](https://code.o3.dev/compare/o3-code-vs-conductor)
- [O3 Code vs Cursor (2026): Parallel Agents vs AI Editor](https://code.o3.dev/compare/o3-code-vs-cursor)
- [O3 Code vs OpenCode (2026): Agent Orchestration vs Open-Source AI Terminal](https://code.o3.dev/compare/o3-code-vs-opencode)
- [O3 Code vs Warp (2026): Agent Orchestration vs AI-Powered Terminal](https://code.o3.dev/compare/o3-code-vs-warp)

## FAQ

### I already use an IDE like Cursor, is this for me?

O3 Code is designed to work with your existing tool, we natively support deep-linking to IDEs like Cursor so you can open your workspaces and files in your IDE.

### Which AI coding agents are supported?

O3 Code works with any CLI-based coding agent including Claude Code, OpenCode, OpenAI Codex, and more. If it runs in a terminal, it runs in O3 Code.

### How does the parallel agent system work?

Each agent runs in its own isolated Git worktree, which means they can work on different branches or features simultaneously without conflicts. You can monitor all agents in real-time and switch between them instantly.

### Is O3 Code free to use?

O3 Code has a free tier. The source code is available on GitHub under Elastic License 2.0 (ELv2), so you can inspect and self-host it subject to the license terms.

### Can I use my own API keys?

Absolutely. O3 Code doesn't proxy any API calls. You use your own API keys directly with whatever AI providers you choose. This means you have full control over costs and usage.