opencode

Provider-agnostic terminal coding agent with 75+ models and a TUI.

opencode is an open-source, terminal-first AI coding agent maintained by the SST team, providing a TUI for working with LLMs to read, write, and edit code and run commands. It is provider-agnostic, supporting many model providers including Claude, OpenAI, Google, and local models, and ships built-in agents such as a full-access build mode and a read-only plan mode. It is MIT-licensed and free, with users paying only their chosen model provider.