March 21, 2026AgentsCodingOpen Source

OpenCode: Open-Source AI Coding Agent Surges to 120K Stars

OpenCode, an open-source AI coding agent built by Anomaly, is trending on Hacker News today with over 400 points. The project has grown to 120,000+ GitHub stars, 800 contributors, and serves over 5 million developers monthly.

OpenCode provides a terminal-based AI coding agent with LSP integration, multi-session support, and compatibility with 75+ AI models including Claude, GPT, Gemini, and local models. It's available as a CLI tool, desktop app, and IDE extension for VS Code and Cursor. Unlike proprietary alternatives, OpenCode does not store any code or context data, making it suitable for privacy-sensitive environments.

What sets OpenCode apart in the crowded AI coding agent space is its model-agnostic architecture — developers can authenticate with GitHub Copilot, ChatGPT Plus/Pro, or bring any provider via Models.dev. The project also offers shareable sessions for debugging and collaboration.

As open-source coding agents gain momentum alongside proprietary tools like Claude Code, Cursor, and Codex, OpenCode represents the community-driven alternative with the strongest adoption metrics to date.

GitHub: https://github.com/anomalyco/opencode
Website: https://opencode.ai
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