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Re:Claude Fable 5 by garciasn on Tuesday June 09, 2026 @06:49PM (#48468913)
I keep getting this message:

> Fable 5's safety measures flagged this message for cybersecurity or biology topics. They may flag safe, normal content as well. These measures let us bring you Mythos-level capability in other areas sooner, and we're working to refine them. Switched to Opus 4.8. Send feedback with /feedback or learn more

I'm working on an internal tool that does new business prospecting data collection, scoring, etc. This is ridiculous.

Re:Claude Fable 5 by algoth1 on Tuesday June 09, 2026 @06:51PM (#48468924)
It’s unusable for me due to the refusals. I’m using claude to find patterns in health data
Re:Claude Fable 5 by yakz on Tuesday June 09, 2026 @07:56PM (#48469449)
I do some work in laboratory automation and it was quick to refuse the first thing I asked it to do. There wasn't anything spicy in the request, just basic liquid-handling protocol implementation. Their position seems to be that they're too stupid to classify requests safely, and that seems reasonable to me. I'd guess the classifier will improve rapidly.
Re:Claude Fable 5 by 5d41402abc4b on Wednesday June 10, 2026 @12:32AM (#48471458)
Have you tried locally running qwen?
Re:Claude Fable 5 by mrbuttons454 on Wednesday June 10, 2026 @11:12AM (#48477579)
Is there a Qwen that I can run locally that is anywhere near these frontier models?
Re:Claude Fable 5 by Der_Einzige on Wednesday June 10, 2026 @01:23PM (#48479604)
No, and don't let anyone gas light you into thinking the answer is yes.
Re:Claude Fable 5 by dmd on Tuesday June 09, 2026 @07:28PM (#48469222)
Same. I'm working on a set of python and matlab scripts that deals with segmenting MRI images into brain vs skull, and it thinks that's bioterrorism.
Re:Claude Fable 5 by garciasn on Tuesday June 09, 2026 @06:54PM (#48468954)
I wonder if it sees Healthcare companies being targeted and that's why it's freaking out; clearly they have some pretty stupid regexes in the harness to detect this sort of shit.

e: I quit the session and went back in. Set it to Fable and told it to continue the last session. It's moving along as if none of that had happened.

How weird.

Re:Claude Fable 5 by throwaway20222 on Tuesday June 09, 2026 @07:08PM (#48469078)
I wonder if this letter has anything to do with why anything even remotely related to biology is getting flagged.

https://www.wired.com/story/openai-anthropic-letter-ai-biolo...

Re:Claude Fable 5 by UltraSane on Tuesday June 09, 2026 @07:49PM (#48469388)
Anthropic knows it refuses too much, they want to be very cautious to avoid any scandals. I think this is why they want to store all Fable and Mythos chats for 30 days so they can use the data to improve.
Re:Claude Fable 5 by fn-mote on Tuesday June 09, 2026 @09:31PM (#48470138)
I’m a point where I expect everything I do will be retained indefinitely.

I’m having a really hard time believing some weak reason for a 30 day retention policy.

Re:Claude Fable 5 by hirako2000 on Tuesday June 09, 2026 @09:56PM (#48470350)
They want to be very cautious to honour the important doctrine at least until IPO launches: we are so good we are nerf our products.
Re:Claude Fable 5 by rvnx on Tuesday June 09, 2026 @09:07PM (#48469932)
Quite counterproductive to refuse to help on health issues too. If they detect health data, they can add a disclaimer, but not hide the information.
Re:Claude Fable 5 by secult on Wednesday June 10, 2026 @03:18AM (#48472664)
You miss the point - by collecting and processing medical data they would fall into a thoroughly regulated industry. Not because they may provide you incorrect data, because they are not allowed to process them.
Re:Claude Fable 5 by fragmede on Tuesday June 09, 2026 @10:52PM (#48470786)
What custom prompt do you have set up? If you tell it you're occupation, does it turn helpful? There was a study that if you tell models they tested that you're a patient, it would refuse, but tell it you're a doctor and suddenly it turns helpful.
Re:Claude Fable 5 by garciasn on Tuesday June 09, 2026 @11:43PM (#48471158)
According to the model, it’s not the model itself that’s doing this, it’s the harness.

Assuming the model is being “truthful”, CC is just being stupid in its detection mechanism.

Re:Claude Fable 5 by 5d41402abc4b on Wednesday June 10, 2026 @12:32AM (#48471455)
what prompts do you use for this?
Re:Claude Fable 5 by girafffe_i on Wednesday June 10, 2026 @12:33AM (#48471464)
There’s no way around it? Can’t you obfuscate as generic data and use keys to map to the real data?
Re:Claude Fable 5 by algoth1 on Wednesday June 10, 2026 @07:01AM (#48474463)
I guess you could even turn everything into numbers, not a bad idea at all!
Re:Claude Fable 5 by fumar on Tuesday June 09, 2026 @08:49PM (#48469818)
Same I am working on music firmware for existing device. I can't proceed as it keeps switching to Opus.
Re:Claude Fable 5 by iambateman on Tuesday June 09, 2026 @09:13PM (#48469984)
I asked a question for my son about how mosquitos carry malaria and Fable was like “ok now hold it right there”
Re:Claude Fable 5 by LouisvilleGeek on Tuesday June 09, 2026 @09:20PM (#48470033)
Same here. It's been rushed for the IPO (in my opinion).
Re:Claude Fable 5 by fragmede on Tuesday June 09, 2026 @10:50PM (#48470765)
Or people were quitting their subscription for codex-5.5 and it was beginning to show up in their metrics.
Re:Claude Fable 5 by brookst on Tuesday June 09, 2026 @11:08PM (#48470921)
Or development had gotten to a point where they need real world usage to tune product and refusals.

Or Fable’s arch is different enough the allocated clusters of compute targeting a date, and here we are, ready or not.

Or…

Re:Claude Fable 5 by piokoch on Wednesday June 10, 2026 @03:16AM (#48472643)
Obviously, soon, for anything valuable, you will have to buy from Anthropic "special license for biology/security/finance advises".

Question is if there will be any competition in this area...

Re:Claude Fable 5 by andy12_ on Wednesday June 10, 2026 @09:14AM (#48475824)
I don't know if you are aware, but some people reported in Twitter that Fable 5 may flag the message regardless of content if it knows (from either pretraining knowledge or memories) that you work in either of those fields. I don't know if that's your case.

https://x.com/i/status/2064449457869984035

Re:Claude Fable 5 by the__alchemist on Wednesday June 10, 2026 @09:22AM (#48475932)
Interesting! I have not used Fable, but so far have not hit trouble. I'm a hobby biologist with a home mol bio lab. It wouldn't answer my questions about LNPs, but so far has been fine for my recombinant DNA workflows, lab techniques, environmental DNA protocols etc. I suspect this may become more difficult!