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<think> block delimiters are not detected correctly

Open Juraji opened this issue 7 months ago • 0 comments

What happened?

I am running Codestral locally (LM Studio -> Custom OpenAI config.) There is an issue with ProxyAI not properly detecting the end of a <think>-block.

Inspecting the model's output, it properly does <think>{reasoning}</think>{answer}.

A little scouring through the code revealed the culprit: The parsing expects (at least) 2 newlines after a </think>-tag. The model outputs a single newline after the think block. I have tried to instruct the model to output 2 newlines, but it sometimes will and sometimes won't, which makes this flaky.

I don´t know the reasoning (by the developer) behind this specific, but I think it should not assert 2 newlines, just look for <think>, and then </think>. Neither the commit message, nor the issue linked to that commit state anything about this formatting.

The places that I found: ThinkingOutputParser.kt#L7 CompleteMessageParser.kt#L17

Relevant log output or stack trace


Steps to reproduce

  • Run Codestral 22B v0.1 in LM Studio.
  • Register LM Studio as a Custom OpenAi-Like config
  • Use the Default Persona.
  • Try to generate something that requires reasoning.

CodeGPT version

3.4.3-241.1

Operating System

Linux

Juraji avatar Jul 07 '25 14:07 Juraji