OpenCode: The Open-Source Terminal AI Coding Assistant
OpenCode is an open-source alternative to Claude Code — providing terminal-native AI coding assistance that works with any LLM provider.
1. Feature Comparison
| Feature | Claude Code | OpenCode | Cursor Agent |
|---|---|---|---|
| Open Source | ❌ | ✅ | ❌ |
| Model Choice | Claude only | Any (OpenAI, Anthropic, Ollama, OpenRouter) | Multiple |
| Interface | Terminal | Terminal | IDE |
| File Operations | ✅ | ✅ | ✅ |
| Shell Commands | ✅ | ✅ | ✅ |
| Git Integration | ✅ | ✅ | ✅ |
| Cost | Anthropic API pricing | Your chosen provider | $20/month + API |
| Self-Hosted LLMs | ❌ | ✅ (Ollama) | Limited |
2. Quick Setup
# Install
go install github.com/opencode-ai/opencode@latest
# Configure with Ollama (fully local, zero cost)
export OPENCODE_MODEL=ollama/deepseek-coder-v2
export OPENCODE_API_BASE=http://localhost:11434
# Or use cloud providers
export OPENCODE_MODEL=anthropic/claude-sonnet-4
export OPENCODE_API_KEY=sk-ant-...
# Run
opencode "Refactor the authentication module to use JWT tokens"
OpenCode proves that powerful AI coding assistance doesn't require vendor lock-in — you can run it entirely on your own infrastructure with your preferred models.
