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[GH-ISSUE #7043] Warn users when input is longer than supported context #30229

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opened 2026-04-22 09:45:17 -05:00 by GiteaMirror · 3 comments
GiteaMirror commented 2026-04-22 09:45:17 -05:00
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Originally created by @fzyzcjy on GitHub (Sep 30, 2024).
Original GitHub issue: https://github.com/ollama/ollama/issues/7043

What is the issue?

Hi thanks for the great library! It would be great if there could be a warning when input is longer than supported context. Otherwise, if the text is silently truncated, the behavior can be confusing.

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Originally created by @fzyzcjy on GitHub (Sep 30, 2024). Original GitHub issue: https://github.com/ollama/ollama/issues/7043 ### What is the issue? Hi thanks for the great library! It would be great if there could be a warning when input is longer than supported context. Otherwise, if the text is silently truncated, the behavior can be confusing. ### OS _No response_ ### GPU _No response_ ### CPU _No response_ ### Ollama version _No response_
GiteaMirror added the bug label 2026-04-22 09:45:17 -05:00
GiteaMirror commented 2026-04-22 09:45:18 -05:00
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@anhalu commented on GitHub (Dec 17, 2024):

Any updated ?

<!-- gh-comment-id:2547763481 --> @anhalu commented on GitHub (Dec 17, 2024): Any updated ?
GiteaMirror commented 2026-04-22 09:45:19 -05:00
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@pacien commented on GitHub (Jan 7, 2025):

There is a warning in the ollama serve logs when this happens:

level=WARN source=runner.go:129 msg="truncating input prompt" limit=2048 prompt=10983 keep=5 new=2048

Sadly, this is not reported back to the user in the ollama run console.
The user can only see some weird behaviour from the LLM's answers. Not ideal.

<!-- gh-comment-id:2575974418 --> @pacien commented on GitHub (Jan 7, 2025): There is a warning in the `ollama serve` logs when this happens: ``` level=WARN source=runner.go:129 msg="truncating input prompt" limit=2048 prompt=10983 keep=5 new=2048 ``` Sadly, this is not reported back to the user in the `ollama run` console. The user can only see some weird behaviour from the LLM's answers. Not ideal.
GiteaMirror commented 2026-04-22 09:45:19 -05:00
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@hillar commented on GitHub (Jun 20, 2025):

87b7af6cee/runner/ollamarunner/runner.go (L157C14-L157C37)

please consider to add to the final response:

  • prompt_input_count : len(inputs)
  • prompt_truncated : true if input is truncated
<!-- gh-comment-id:2989972092 --> @hillar commented on GitHub (Jun 20, 2025): https://github.com/ollama/ollama/blob/87b7af6ceef2b4d96374dbff5070b41b17d3f138/runner/ollamarunner/runner.go#L157C14-L157C37 please consider to add to the final response: * `prompt_input_count` : len(inputs) * `prompt_truncated` : true if input is truncated
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Reference: github-starred/ollama#30229
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