The article outlines a five-layer open-source AI stack—model, inference, gateways and routers, harness, and tools—for agentic software development, noting that developers familiar with Claude Code can readily switch to open models. It compares model sizes: Kimi K3, with 1.8T total and 104B active parameters, suits complex tasks like refactoring authentication systems, while GLM 5.3 Flash, roughly six times smaller and twenty times cheaper, handles well-specified tasks such as writing tests.
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