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Always visible context window status #1953

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Description

@thomas11

Describe the feature or problem you'd like to solve

I'd like to see the current context usage permanently in the Copilot UI, like the "remaining reqs".

Proposed solution

Getting towards the end of the context window degrades LLM performance. The Copilot CLI doesn't give any indication when that's the case, however. Similar to "Remaining reqs.: 85.4%" in the bottom right, there could be an indicator like "67k/160k tokens (42%)".

Example prompts or workflows

No response

Additional context

Inspired by this video (timestamp 11:33):

Image

Activity

  1. added theissue type on Mar 10, 2026
  2. added
    area:context-memoryContext window, memory, compaction, checkpoints, and instruction loading
    on Apr 6, 2026
  3. LeeLiZhang commented on Aug 31, 2026

    @LeeLiZhang

    How to upvote this?

  4. thomasa88 commented on Oct 11, 2026

    @thomasa88

    I think /statusline -> context-used alleviates this a bit, but it is not always visible. E.g. when answering plan question dialogs, the statusline gets hidden.

    Image

    UX-wise, I'm not sure why the plan use is placed above the input box and the context use is placed below it. For me, the percentage shown closest to the chat contents would most naturally be the context window usage, not the plan usage.

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    area:context-memoryContext window, memory, compaction, checkpoints, and instruction loading

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