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[BUG] Bad token estimation in Prompty #3809

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ianchi opened this issue Oct 11, 2024 · 2 comments · May be fixed by #3821
Open

[BUG] Bad token estimation in Prompty #3809

ianchi opened this issue Oct 11, 2024 · 2 comments · May be fixed by #3821
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bug Something isn't working no-recent-activity There has been no recent activity on this issue/pull request

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@ianchi
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ianchi commented Oct 11, 2024

Describe the bug
Token estimation is wrong, as it doesn't take into account the functions/tools definition as part of the prompt.
In cases with heavy use of tools this can make a big diference and make you take a wrong decision regarding the token limit of a request.

How To Reproduce the bug
Steps to reproduce the behavior, how frequent can you experience the bug:

  1. Create a prompty file with a large tools definition
  2. Make an estimation with a small question
  3. compare with the actual token consumption reported by oai response

Expected behavior
A clear and concise description of what you expected to happen.

  • Add an additional function to also estimate the tools definition token consumption

Screenshots
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Running Information(please complete the following information):

  • Promptflow Package Version using pf -v: [e.g. 0.0.102309906]
  • Operating System: [e.g. Ubuntu 20.04, Windows 11]: Debian
  • Python Version using python --version: [e.g. python==3.10.12]: 3.11.5

Additional context
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@ianchi ianchi added the bug Something isn't working label Oct 11, 2024
@ianchi
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ianchi commented Oct 13, 2024 •
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Additionally token from messages is also incorrect.
It doesn't take into account when an assistant's message has tool_calls

And when using Azure OpenAI the wrong model type may be selected.
num_tokens_from_messages expects the model as string using one of OpenAI model's labels, but in this case the azure_deployment is used. This is a user generated label and not necessarily a valid model name, so the token count raises error and can´t be used.

@ianchi ianchi linked a pull request Oct 19, 2024 that will close this issue
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@github-actions github-actions bot added the no-recent-activity There has been no recent activity on this issue/pull request label Nov 12, 2024
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prompty: improve token count estimation ianchi/promptflow
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@ianchi