Can open models finally compete with the giants? I used Ollama to bring GLM 4.7 into Claude Code for a high-stakes debugging showdown against Opus 4.5. Here’s why one model thrived while the other struggled with the details.

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A comparison experiment testing Claude Opus 4.5 against GLM 4.7 using Ollama's new Claude Code integration. Both models were tasked with building a Node.js proxy to route Claude Code requests to Google's Vertex API. Opus 4.5 delivered a working solution more efficiently, demonstrating superior debugging skills and code quality. GLM 4.7 struggled with protocol translation and required more iterations, though it remains viable for simpler development tasks and local deployment scenarios where API costs matter.

Claude Code + Ollama: Stress Testing Opus 4.5 vs GLM 4.7