OpenCode

OpenCode (formerly SST OpenCode) is an open-source terminal-native coding agent built in Go. It features a stunning TUI interface, supports 75+ AI model providers (Anthropic, OpenAI, Google, xAI, DeepSeek, Ollama, LM Studio), and starts in under 200ms. It includes LSP integration for code intelligence, multi-session support, and a client/server architecture with persistent sessions. Single binary distribution with zero dependencies makes it easy to install anywhere.