ChatGPT-5 Can't Do Basic Math
ChatGPT-4 can solve it them. Even using GPT-5 from the API gives the correct result. Something with the ChatGPT frontend prompt seems to be the issue.
Example:
Prompt: Solve 5.9=x+5.11
Answer:
To solve the equation:
5.9 = x + 5.11
Subtract 5.11 from both sides:
5.9 - 5.11 = x
-0.21 = x
Final answer:
\boxed{x = -0.21}
GPT 4.1 does this as well. This isn't new.
You shouldn't expect an AI model to do math beyond explanations of concepts properly unless it's reaching for a tool (i.e., a calculator). That isn't what LLMs are designed for.
Can confirm this is happening with the same prompt -- it even tries to justify that 5.9 is less than 5.11 when asked further.
[1] https://chatgpt.com/share/689652e0-c2ac-8004-811b-0856a76fe2...
i tried this and a variation of this a bunch of times. got the right answer every time.
i asked about 10 of my friends and they all got the right answers as well.
is it just people trying to get views on X or is it actually happening?
"You are likely going to see a lot of very varied results posted online from GPT-5 because it is actually multiple models, some of which are very good and some of which are meh.
Since the underlying model selection isn’t transparent, expect confusion."
https://bsky.app/profile/emollick.bsky.social/post/3lvtm64sc...
How can an auto complete trained on a massive human conversations and texts be reliably good at something that average human producing those texts is not good at?
Are you still delusional about “i” part of ai game?
Sam Altman got pressure from board to release long-awaited gpt-5 and here's the outcome