Feedback: github.copilot.chat.preferLongContext.enabled being enabled by default introduces cost, opacity, and performance concern

[Yamahari]

🏷️ Discussion Type

Product Feedback

💬 Feature/Topic Area

VS Code

Body

Summary

The setting github.copilot.chat.preferLongContext.enabled is currently enabled by default in VS Code Copilot Chat. This setting automatically pushes queries into extended context windows (up to 1M tokens) while obscuring manual context size selection from the user interface.

I would like to flag significant concerns regarding this default configuration from an enterprise, cost governance, and UX transparency perspective.

[github-actions[bot]]

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