OpenCode

OpenCode is a coding agent you run yourself: in the terminal, through an IDE extension, or in the desktop build that is in beta for macOS, Windows and Linux. Two agents sit behind the Tab key. Build has full access to the project, while plan is read only and asks before it touches the shell, which makes it the one to point at a codebase you have never opened. Models come from any provider wired through Models.dev, local ones included, and an existing GitHub Copilot or ChatGPT subscription can be used as the backend instead. It loads the language servers a project needs on its own, keeps several sessions going in parallel against the same repository, and can hand out a link to a session so somebody else can read what happened. The project states that it stores none of your code or context data, which is what makes it usable where source cannot be sent to a vendor.