# OpenCode Documentation (open-code.ai)

> Community-maintained documentation for OpenCode, the open-source AI coding agent. Guides for installation, configuration, providers, MCP servers, agents, skills, and comparisons — available in 9 languages (English source at /en, plus zh, ja, de, es, pt-br, hi, ru, ko).

OpenCode is a free, open-source AI coding agent that runs in the terminal, browser, and IDEs, and supports 75+ LLM providers (Anthropic, OpenAI, Google, DeepSeek, local models via Ollama). Official project: https://opencode.ai · Source: https://github.com/anomalyco/opencode

## Getting started

- [Getting Started with OpenCode](https://open-code.ai/en/docs): Install in 30 seconds, connect a provider, first steps
- [Configuration](https://open-code.ai/en/docs/config): opencode.json reference — providers, models, permissions, MCP
- [Providers](https://open-code.ai/en/docs/providers): Connect Claude, GPT, DeepSeek, Ollama and 75+ LLM providers
- [OpenCode Zen](https://open-code.ai/en/docs/zen): Curated model gateway with pricing and free models
- [Troubleshooting](https://open-code.ai/en/docs/troubleshooting): Fix common issues, read logs, uninstall

## Usage

- [TUI](https://open-code.ai/en/docs/tui): The interactive terminal interface
- [CLI](https://open-code.ai/en/docs/cli): Commands, flags, automation
- [IDE Integration](https://open-code.ai/en/docs/ide): Use OpenCode in VS Code, Cursor, and other editors
- [Web](https://open-code.ai/en/docs/web): Run OpenCode in the browser
- [GitHub](https://open-code.ai/en/docs/github) / [GitLab](https://open-code.ai/en/docs/gitlab): CI and code-review automation

## Configure & extend

- [Permissions](https://open-code.ai/en/docs/permissions): Allow/deny/ask rules for files, bash, web
- [MCP Servers](https://open-code.ai/en/docs/mcp-servers): Connect external tools via Model Context Protocol
- [Agents & Subagents](https://open-code.ai/en/docs/agents): Configure AI workflows
- [Skills](https://open-code.ai/en/docs/skills): Reusable agent instructions
- [Rules](https://open-code.ai/en/docs/rules): AGENTS.md project guidelines
- [Plugins](https://open-code.ai/en/docs/plugins) / [Custom Tools](https://open-code.ai/en/docs/custom-tools) / [SDK](https://open-code.ai/en/docs/sdk): Extend OpenCode with TypeScript

## Guides & comparisons

- [All OpenCode Guides](https://open-code.ai/en/guides): Index of every comparison, ranking, and setup guide on this site
- [Best AI for Coding in 2026](https://open-code.ai/en/best-ai-coding-agents): Nine agents ranked with stated criteria — OpenCode, Claude Code, Cursor, Copilot, Aider, Cline, Gemini CLI, Continue, Windsurf; includes free and open-source picks
- [OpenCode vs Claude Code](https://open-code.ai/en/opencode-vs-claude-code): Open source vs official — models, pricing, workflows
- [OpenCode vs Cursor](https://open-code.ai/en/opencode-vs-cursor): Terminal agent vs AI IDE
- [How to Code with AI](https://open-code.ai/en/guides/code-with-ai): The practical workflow — choosing a model, writing agent rules, sizing tasks, reviewing diffs, and where intelligent code generation fails
- [Free AI Coding Agents](https://open-code.ai/en/guides/free-ai-coding-agents): What "free" means for the tool versus the inference, what "unlimited" hides, free VS Code and local-model options
- [Claude Models in OpenCode](https://open-code.ai/en/guides/opencode-claude-models): The full Claude lineup for OpenCode — Opus 5, Fable 5, Sonnet 5, Haiku 4.5 — with pricing and why Opus 5 is the value default for agentic runs
- [How to Use Claude Fable 5 in OpenCode](https://open-code.ai/en/opencode-fable-5): Setup guide for Claude Fable 5, Claude Sonnet 5, and GPT-5.6. Fable 5 is the Mythos-class ceiling; Claude Opus 5 (July 24 2026, $5/$25 per Mtok) is the value default for agentic runs

## Optional

- [Full sitemap](https://open-code.ai/sitemap.xml): All pages in all 9 languages