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Claude Code with Local LLMs and ANTHROPIC_BASE_URL: Ollama, LM Studio, llama.cpp, vLLM

Claude Code with Local LLMs and ANTHROPIC_BASE_URL: Ollama, LM Studio, llama.cpp, vLLM

Run Claude Code on a local LLM via ANTHROPIC_BASE_URL.

Apr 29, 2026

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1 min read

Native Anthropic endpoints, tool-call compatibility, and context-window sizing for local Claude Code.

Last tested: April 2026. See Changelog at the bottom.

Three things decide whether a local Claude Code session works:

Field notes from real AI and automation builds — every two weeks. Read the full piece.