OpenCode

OpenCode is an open-source AI coding agent built for the terminal — a 100% MIT-licensed alternative to Cursor and Windsurf for developers who want full control over their tooling and the freedom to choose any LLM. Written in Go with a clean Terminal User Interface (TUI), it integrates AI assistance directly into the workflow of developers who live in vim, tmux, and the command line.

The standout feature is provider flexibility: out of the box, OpenCode supports more than 75 LLM providers — Claude, GPT, Gemini, Grok, DeepSeek, Mistral, and many others — plus local models running through Ollama for fully offline use. It implements the Model Context Protocol (MCP), so capabilities can be extended through external tools. By design, OpenCode does not store your code on third-party servers — a meaningful difference for developers working with proprietary or sensitive codebases.

The project has crossed 140,000 GitHub stars with 850+ contributors and 11,000+ commits, making it one of the fastest-growing developer-focused open-source projects of 2026. The free tier is the entire CLI; the optional Go plan ($10/month) adds quality-of-life features for power users. For developers who want a Cursor-class agentic coding experience without IDE lock-in, vendor lock-in, or having their code shipped to a single LLM provider — OpenCode is the credible open alternative.