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GPT-5: "How many times does the letter b appear in blueberry?"

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Re: GPT-5: "How many times does the letter b appear in blueberry?"

#31
post #24

Url changed from https://bsky.app/profile/kjhealy.co/post/3lvtxbtexg226 , which points to this.

The reason I submitted the Bluesky post is because the discussion there is more informative (and also multiple instances of confirmation that it’s not a fluke), but the link to both the post and blog is a good compromise.

Re: GPT-5: "How many times does the letter b appear in blueberry?"

#32
post #22

Isn't that just an artifact caused by the tokenization of the training and input data? See https://platform.openai.com/tokenizer https://github.com/openai/tiktoken

No, it's the entire architecture of the model. There's no real reasoning. It seems that reasoning is just a feedback loop on top of existing autocompletion. It's really disingenuous for the industry to call warming tokens for output, "reasoning," as if some autocomplete before more autocomplete is all we needed to solve the issue of consciousness. Edit: Letter frequency apparently has just become another scripted out…

I had a fun experience recently. I asked one of my daughters how many r's there are in strawberry. Her answer? Two ...

Of course then you ask her to write it and of course things get fixed. But strange.

Re: GPT-5: "How many times does the letter b appear in blueberry?"

#34
post #32

Earlier quoted context omitted.

No, it's the entire architecture of the model. There's no real reasoning. It seems that reasoning is just a feedback loop on top of existing autocompletion. It's really disingenuous for the industry to call warming tokens for output, "reasoning," as if some autocomplete before more autocomplete is all we needed to solve the issue of consciousness. Edit: Letter frequency apparently has just become another scripted out…

I had a fun experience recently. I asked one of my daughters how many r's there are in strawberry. Her answer? Two ... Of course then you ask her to write it and of course things get fixed. But strange.

I think that's supposed to be the idea of reasoning functionality, but in practice, it just seems to allow responses to continue longer than that would have otherwise by bisecting the output into warming an output and then using maybe what we would consider cached tokens to assist with further contextual lookups.

That is to say, you can obtain the same process by talking to "non-reasoning" models.

Re: GPT-5: "How many times does the letter b appear in blueberry?"

#36
post #22

Isn't that just an artifact caused by the tokenization of the training and input data? See https://platform.openai.com/tokenizer https://github.com/openai/tiktoken

It can spell the word (writing each letter in uppercase followed by a whitespace, which should turn each letter with its whitespace into a separate token). It also has reasoning tokens to use as scratch space, and previous models have demonstrated knowledge of the fact that spelling words is a useful step to counting letters.

Tokenization makes the problem difficult, but not solving it is still a reasoning/intelligence issue

Re: GPT-5: "How many times does the letter b appear in blueberry?"

#37
I think a lot of those trick questions outputting stupid stuff can be explained by simple economics.

It's just not sustainable for OpenAI to run GPT at the best of its abilities on every request. Their new router is not trying to give you the most accurate answer, but a balance of speed/accuracy/sustainable cost on their side.

(kind of) a similar thing happened when 4o came out, they often tinkered with it and the results were sometimes suddenly a lot worse, it's not that the model is bad, they're just doing all kind of optimizations/tricks because they can barely afford to run it for everyone.

When sama says he believe it to have a PhD level, I almost believe him, because he have full access and can use it at 100% of its power all the time.

Even OSS 20b gets it right the first time, I think the author was just mistakenly routed to the dumbest model because it seemed like an easy unimportant question.

Re: GPT-5: "How many times does the letter b appear in blueberry?"

#38
post #30

The technical explanations to why this happens with strawberry, blueberry and similar is a great way to teach people how LLM works (and not work) https://techcrunch.com/2024/08/27/why-ai-cant-spell-strawber... https://arbisoft.com/blogs/why-ll-ms-can-t-count-the-r-s-in-... https://www.runpod.io/blog/llm-tokenization-limitations

In this case, tokenization is less effective of a counterargument. If it was one-shot, maybe, but the OP asked GPT-5 several times, with different formatting of blueberry (and therefore different tokens, including single-character tokens), and it still asserted there are 3 b’s.

Re: GPT-5: "How many times does the letter b appear in blueberry?"

#39
The extraordinary, beautiful, perfect thing about this is the way it poetically underscores several things about the LLM world:

1) these people think so little of everyone else's areas of expertise they are willing to claim their technology has PhD-level expertise in them, apparently unironically.

2) actually in LLM world, PhDs are what you have if you're too stupid not to take the FAANG money in your second year when the quick wins are done, you've done a couple of posters and now you realise you're papering over the cracks with them: worthless. So why would anyone else want a PhD when PhDs are so worthless based on their bubble experience? We can just replace them with GPT-5.

3) their PhD-level-intelligent system is incapable of absorbing corrections, which is a crucial part of acquiring an actual PhD

4) GPT-5 continues to have the asshole-confidence of a tech bro mainsplaining someone else's area of expertise on his personal blog.

We're now at the point where marketing is celebrating software that has had so much effort spent on crushing hallucination that in fact it has become delusionally confident.

I love everything about this.

ETA: at the end of this article is this paragraph, which really is a thing of beauty:

I don’t think you get to have it both ways. That is, you don’t get to, as it were, borrow charisma from all the hype and then disavow every failure to live up to it as someone else’s naive mistake for believing the hype.

Bravo.

Re: GPT-5: "How many times does the letter b appear in blueberry?"

#40
post #35

I think the concrete issue this points to is the thing that dynamically decides when to use reasoning failed to choose it in this instance. Sam Altman said it was broken on release day.

Even if it’s pointing to a weaker GPT-5 like gpt-5-nano, it should still be able to answer this question correctly.
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