OpenCode
OpenCode is the leading open-source terminal coding agent with over 161,000 GitHub stars. Its defining feature is provider freedom — it supports 75+ model providers including Anthropic, OpenAI, Gemini, DeepSeek, Groq, and local models via Ollama. The dual-agent system separates planning (read-only analysis) from building (full tool access), and LSP integration brings IDE-level intelligence to the terminal. For developers who value open-source flexibility and provider independence, OpenCode is a compelling alternative to proprietary tools.
Key Features
- 75+ provider support — never locked into a single model vendor
- Dual-agent architecture: Plan agent (read-only) + Build agent (full access)
- LSP integration for go-to-definition, diagnostics, and type-aware context
- Client/server architecture with session persistence across terminals
- Desktop app for macOS, Windows, and Linux (Tauri-based)
Usage Guide
Setting Up OpenCode
- Install: `npm install -g @opencode-ai/cli` or download the desktop app.
- Configure your preferred providers: `opencode config set provider anthropic`.
- Set API keys for each provider you want to use.
- Run `opencode` in any project directory to start a session.
- Use `@filename` to reference specific files and ask for targeted edits.
What can it achieve?
Multi-Model Workflows
Use DeepSeek for fast edits and Claude for complex reasoning — switch providers without changing your workflow.
Offline Development
Connect OpenCode to a local Ollama instance with DeepSeek V4 or Llama models for fully offline coding.
Team Collaboration
Share persistent sessions across team members for collaborative debugging and code review.