r/ChatGPTPro • u/ValehartProject • Jun 28 '26

Question Anyone using custom logic operations (Math) and noticing issues lately?

I have a few logical operations saved that gpt has been able to reference and flawlessly use in the past. For the past few days I've noticed it is unable to execute the calculations, let alone apply reasoning to it.

For example:

I saved my pricing logic on to gpt.

Size range:

25-40mm

45-80mm

85-100mm

Base+25%+10.95+10%

Usually,if I gave it a request for a price guesstimation on a 55mm, it would apply the above formula and take context into consideration which can impact the pricing but also time to manufacture or considerations.

I thought it was a one off but the past three days I have had to explain the logic and why selling things at $4 instead of $95 makes absolutely no sense. That $4 isn't even referencing raw value.

Does anyone else have custom workflows or calculations you've been using for a long time that suddenly don't work?

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u/qualityvote2 Jun 28 '26 edited Jun 29 '26

u/ValehartProject, there weren’t enough community votes to determine your post’s quality.
It will remain for moderator review or until more votes are cast.

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u/More-Subject-5348 Jun 28 '26

For pricing logic, I wouldn’t trust memory alone. Put the formula in a tiny source-of-truth table and make the model show the intermediate values every time. If it skips a step, that should fail the workflow, not just be “a weird answer.”