ChatGPT Cowork adds a VM for testing replication materials on a clean machine

RobbWiller · x · 2026-07-25

Use ChatGPT Cowork’s virtual machine to validate replication materials on a machine other than your own.

The post highlights a workflow for checking whether LLM instructions actually reproduce the backend spec in an isolated VM. In the screenshot, the reviewer says they built the FastAPI service from the prompt, generated and validated a five-row corpus, ran nine behavioral tests successfully, verified several request formats and privacy constraints, and confirmed the resulting JSON behavior matched the spec.

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