OpenCode | The open source alternative to claude code

Overview

OpenCode is an open source AI coding agent that runs in the terminal, IDE, or as a desktop application. The page at opencode.ai presents the project, its features, installation options, and a premium model offering called Zen.

What it is / What it does

• AI coding agent that assists with writing code across terminal, desktop app, and IDE extension interfaces
• Automatically loads the appropriate Language Server Protocol (LSP) configurations for the LLM
• Supports multi-session: run multiple agents in parallel on the same project
• Allows sharing links to any session for reference or debugging
• Connects to 75+ LLM providers through Models.dev, including local models; supports Claude, GPT, Gemini, and others
• Integrates with existing subscriptions: log in with GitHub to use a GitHub Copilot account, or log in with OpenAI to use a ChatGPT Plus or Pro account
• Includes free models; no extra AI subscriptions required
• Desktop app available in beta on macOS, Windows, and Linux
• Installable via curl, npm, bun, brew, or paru
• Does not store user code or context data, designed for privacy-sensitive environments

Author / Source

• Developed under Anomaly Brand (© 2026)
• Open source; GitHub repository linked from the page with 150K stars, 850 contributors, and 11,000+ commits

Notes

• Zen is a separate offering providing access to a curated set of AI models that have been tested and benchmarked specifically for coding agents
• An Enterprise tier is listed but not detailed on this page
• Documentation and changelog are available via linked subpages