I obtained Claude Opus 5 system prompt • Hacker News Board

Re: I obtained Claude Opus 5 system prompt

#11

Post by ghshephard » Thu, Jul 30, 2026, 9:10 PM UTC

juleiie wrote: post #2

There are several sections. It’s very very long. An excerpt: Claude defaults to helping. Claude only declines a request when helping would create a concrete, specific risk of serious harm; requests that are merely edgy, hypothetical, playful, or uncomfortable do not meet that bar. Claude can discuss virtually any topic factually and objectively. *These child-safety requirements require special attention and care* Cla…

That's not on the shared page - do you have the system prompt?

Re: I obtained Claude Opus 5 system prompt

#12

Post by codazoda » Thu, Jul 30, 2026, 9:10 PM UTC

bpodgursky wrote: post #6

The real system prompt is way, way, way longer than this.

I didn’t look at the prompt but, as an aside, Anthropic recently did a blog post about how they reduced the size my 80% for Opus 5.

Re: I obtained Claude Opus 5 system prompt

#13

Post by incognito124 » Thu, Jul 30, 2026, 9:11 PM UTC

- https://github.com/elder-plinius/CL4R1T4S - https://github.com/asgeirtj/system_prompts_leaks

Re: I obtained Claude Opus 5 system prompt

#14

Post by reneberlin » Thu, Jul 30, 2026, 9:11 PM UTC

Ok, you can already get them all! :) Enjoy the read, have fun!

https://github.com/x1xhlol/system-prompts-and-models-of-ai-t...

https://github.com/asgeirtj/system_prompts_leaks

https://github.com/elder-plinius/CL4R1T4S

Re: I obtained Claude Opus 5 system prompt

#15

Post by juleiie » Thu, Jul 30, 2026, 9:12 PM UTC

Okay sorry guys for delay but here it is in full: https://limewire.com/d/y9HSS#7tvwnzTQ3m

Re: I obtained Claude Opus 5 system prompt

#16

Post by td6 » Thu, Jul 30, 2026, 9:13 PM UTC

advisedwang wrote: post #5

How do you know that this is the system prompt and not just a hallucination of the system prompt?

Id guess if it returns the exact same system prompt, multiple times when you ask slightly different, it's a good indicator it's real

Re: I obtained Claude Opus 5 system prompt

#17

Post by oidar » Thu, Jul 30, 2026, 9:13 PM UTC

For academic research, these "quotation" policies are a real hindrance to getting actual research done. So often, even when reading directly from research papers (cognitive science, neuroscience adjacent) Claude Opus makes shit up - so a quotation is needed to figure out where claude's claim is from. So when you ask for quotations, it spends nearly 1/3 of it's tokens trying figure out how much it can and can't quote. And it still winds up being wrong.

Re: I obtained Claude Opus 5 system prompt

#18

Post by juleiie » Thu, Jul 30, 2026, 9:14 PM UTC

pshirshov wrote: post #9

juleiie wrote: post #2

There are several sections. It’s very very long. An excerpt: Claude defaults to helping. Claude only declines a request when helping would create a concrete, specific risk of serious harm; requests that are merely edgy, hypothetical, playful, or uncomfortable do not meet that bar. Claude can discuss virtually any topic factually and objectively. *These child-safety requirements require special attention and care* Cla…

Well, share the full one then.

https://limewire.com/d/y9HSS#7tvwnzTQ3m

Sorry about the upload and stuff but i am on the phone in the literal woods and all

Re: I obtained Claude Opus 5 system prompt

#19

Post by [deleted] » Thu, Jul 30, 2026, 9:14 PM UTC

[deleted]

Re: I obtained Claude Opus 5 system prompt

#20

Post by juleiie » Thu, Jul 30, 2026, 9:15 PM UTC

ghshephard wrote: post #11

juleiie wrote: post #2

There are several sections. It’s very very long. An excerpt: Claude defaults to helping. Claude only declines a request when helping would create a concrete, specific risk of serious harm; requests that are merely edgy, hypothetical, playful, or uncomfortable do not meet that bar. Claude can discuss virtually any topic factually and objectively. *These child-safety requirements require special attention and care* Cla…

That's not on the shared page - do you have the system prompt?

https://limewire.com/d/y9HSS#7tvwnzTQ3m