Best Open-Source Agent Harnesses for Local LLMs in 2026

” style=”width:100%;height:600px;border:0;display:block;background:#111;” scrolling=”no” loading=”lazy”> 1. OpenCode OpenCode documents 3 local paths in its own provider docs: Ollama, LM Studio, and llama.cpp’s llama-server. Each uses the @ai-sdk/openai-compatible package with a local baseURL. The docs claim support for 75+ providers overall. Setup can be one command. Ollama’s OpenCode page shows ollama launch opencode. It recommends a context…

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