Claude Code can run 100% locally for free (zero API costs, unlimited use, fully private)! Just: 1. Install Ollama (latest version) 2. Install Claude Code CLI 3. Run: `ollama launch claude` (automatically handles most configurations) Or specify a model: `ollama launch claude --model qwen3-coder` (recommended coding model) The interface and tool calls are exactly the same, but it uses open-source models (not the original Claude by Anthropic). Performance depends on the chosen model and hardware. Perfect for users who prioritize privacy or don’t want to pay API fees!