The open source AI coding agent.

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Important

This project is a fork of the original OpenCode. It includes several performance enhancements and architectural improvements to the AI agent core.

Key Updates & Enhancements

• 🚀 Parallel Tool Execution: Implemented a sophisticated resource lock manager supporting shared/exclusive locks. Multiple read-only operations (like read, grep) can now run in parallel, significantly reducing agent wait times.
• 🔗 Dependency-Aware Scheduling: Added intelligent analysis of tool dependencies to optimize execution flow and ensure data consistency.
• ⚡ Async Performance Optimization: Refactored core processing loops and introduced async lazy loading for heavy components (e.g., Tree-Sitter parsers) to achieve faster startup and smoother execution.
• 🏗️ Workqueue & Background Tasks: Enhanced the internal workqueue system for more robust background task management.
• 🧠 AI-Native Logic Flow: Refined the agent's decision-making logic to be more efficient and better suited for complex multi-step coding tasks.

Recent Improvements (v0.2.x)

• 🔍 Precise Code Reading (Read Tool): Introduced advanced navigation and positioning. Supports direct jumping to functions, classes, or line numbers via symbol, with 1-based line support and file structure previews, significantly boosting AI context retrieval efficiency.
• 📝 Enhanced Code Editing (Edit/MultiEdit):
  • Advanced Matching Strategies: Supports exact, fuzzy, block, and regex matching, drastically improving the success rate of complex code modifications.
  • Range Constraints & Validation: Added anchorLines to restrict search ranges, alongside dryRun and validateOnly modes for safer, more predictable edits.
  • Intelligent Error Feedback: Provides smart suggestions on match failures (e.g., "Did you mean line X?"), enabling faster agent self-correction.
• ⚙️ Robust Task Scheduling (Work Queue):
  • Optimized Task Identification: Improved task ID generation using hashing to prevent collisions in large-scale workflows.
  • Enhanced State Management: Introduced granular failure handling (isFailed) to increase reliability during parallel execution.
• 💎 Code Quality & Standards: Fully aligned with strict coding standards, adding comprehensive documentation and thread-safety annotations (@VertxThreadSafety) across core components.

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Installation

# YOLO
curl -fsSL https://opencode.ai/install | bash

# Package managers
npm i -g opencode-ai@latest        # or bun/pnpm/yarn
scoop install opencode             # Windows
choco install opencode             # Windows
brew install anomalyco/tap/opencode # macOS and Linux (recommended, always up to date)
brew install opencode              # macOS and Linux (official brew formula, updated less)
paru -S opencode-bin               # Arch Linux
mise use -g opencode               # Any OS
nix run nixpkgs#opencode           # or github:anomalyco/opencode for latest dev branch

Tip

Remove versions older than 0.1.x before installing.

Desktop App (BETA)

OpenCode is also available as a desktop application. Download directly from the releases page or opencode.ai/download.

Platform	Download
macOS (Apple Silicon)	opencode-desktop-darwin-aarch64.dmg
macOS (Intel)	opencode-desktop-darwin-x64.dmg
Windows	opencode-desktop-windows-x64.exe
Linux	.deb, .rpm, or AppImage

# macOS (Homebrew)
brew install --cask opencode-desktop
# Windows (Scoop)
scoop bucket add extras; scoop install extras/opencode-desktop

Installation Directory

The install script respects the following priority order for the installation path:

1. $OPENCODE_INSTALL_DIR - Custom installation directory
2. $XDG_BIN_DIR - XDG Base Directory Specification compliant path
3. $HOME/bin - Standard user binary directory (if exists or can be created)
4. $HOME/.opencode/bin - Default fallback

# Examples
OPENCODE_INSTALL_DIR=/usr/local/bin curl -fsSL https://opencode.ai/install | bash
XDG_BIN_DIR=$HOME/.local/bin curl -fsSL https://opencode.ai/install | bash

Agents

OpenCode includes two built-in agents you can switch between with the Tab key.

• build - Default, full access agent for development work
• plan - Read-only agent for analysis and code exploration
  • Denies file edits by default
  • Asks permission before running bash commands
  • Ideal for exploring unfamiliar codebases or planning changes

Also, included is a general subagent for complex searches and multistep tasks. This is used internally and can be invoked using @general in messages.

Learn more about agents.

Documentation

For more info on how to configure OpenCode head over to our docs.

Contributing

If you're interested in contributing to OpenCode, please read our contributing docs before submitting a pull request.

Building on OpenCode

If you are working on a project that's related to OpenCode and is using "opencode" as a part of its name; for example, "opencode-dashboard" or "opencode-mobile", please add a note to your README to clarify that it is not built by the OpenCode team and is not affiliated with us in any way.

FAQ

How is this different from Claude Code?

It's very similar to Claude Code in terms of capability. Here are the key differences:

• 100% open source
• Not coupled to any provider. Although we recommend the models we provide through OpenCode Zen; OpenCode can be used with Claude, OpenAI, Google or even local models. As models evolve the gaps between them will close and pricing will drop so being provider-agnostic is important.
• Out of the box LSP support
• A focus on TUI. OpenCode is built by neovim users and the creators of terminal.shop; we are going to push the limits of what's possible in the terminal.
• A client/server architecture. This for example can allow OpenCode to run on your computer, while you can drive it remotely from a mobile app. Meaning that the TUI frontend is just one of the possible clients.

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