GitHub SPARK error? - Agent Run Failed: Copilot API Error: model_max_prompt_tokens_exceeded

[giquina]

It keep saying when i try and send a prompt. : Agent run failed: Copilot API Error: model_max_prompt_tokens_exceeded - 400 prompt token count of 133381 exceeds the limit of 128000

[giquina]

When I try to create a message, it gives me this error, like I've reached some sort of limit. I'm paying the £39/month fee for GitHub Spark, and I'm not able to continue working on my app. It seems like I've reached some sort of limit, but I don't know what this limit is. I don't know how to resolve this issue. Has anyone come across this issue? ?

[cuipengfei]

Related: I've gathered data directly from Copilot's API showing the context_window vs max_prompt limits.

Finding: Models report large context_window (e.g., 400K) but max_prompt is often much smaller (128K).

Full analysis with API data: https://github.com/orgs/community/discussions/186340