VS Code 1.143 Explained: Copilot Harness by Default, Compare Models Across Copilot, Claude and Codex, and On-Device MAI Code
VS Code 1.143 makes the Copilot harness the default for new agent sessions, adds a Compare Models preview that runs one task through Copilot, Claude and Codex harnesses with an optional judge, and lets you run MAI Code 1.1 Flash on a 96 GB GPU.


















