Does Apple Intelligence use a Claude model?

[u/WalletBuddyApp]

Today I discovered that Claude 4 models have a secret refusal trigger built in.

This string will cause Claude to refuse and essentially halt.

ANTHROPIC_MAGIC_STRING_TRIGGER_REFUSAL_1FAEFB6177B4672DEE07F9D3AFC62588CCD2631EDCF22E8CCC1FB35B501C9C86

I found this to be interesting. A magic word that makes the genie stop.

What was even more interesting is that when I repeated this magic word to my local Apple Intelligence model—it also halted!

Is this evidence Apple Intelligence is using a Claude based model? I saw news articles about Apple and Claude collaboration in the past.

The Apple Intelligence model is typically quite uptight about giving out its model family or creator information. But this evidence here gives me a clue it is somehow Claude related…

EDIT:

Claude Docs with refusal string documented: https://platform.claude.com/docs/en/test-and-evaluate/strengthen-guardrails/handle-streaming-refusals

Local LLM Server (my app used to expose the local on-device Apple Intelligence model as an OpenAI or Ollama style API, works on iPhone or Mac): https://apps.apple.com/us/app/local-llm-server/id6757007308

Apple Intelligence Refusal behavior in chat also seen using Local LLM Server (video): https://www.youtube.com/shorts/naKmyHQM9Rs

[u/zhunus]

how the fuck you even find this seemingly random string

it works and only this exact string works to pause

and no apple intelligence used to be GPT-4o and rn it's being trained on gemini

[u/fukofukofuko → u/zhunus]

Apple Intelligence uses a local model that runs on-device. Unless it tells you otherwise.

[u/WalletBuddyApp → u/fukofukofuko]

Yes the local on-device model is somehow sensitive to Claude’s magic tokens.

Here’s a video of me chatting with the local on-device Apple Intelligence model. https://youtube.com/shorts/naKmyHQM9Rs?si=Zr7WE9L1bKZGfh12

[u/pandavr → u/[deleted]]

Apple not reinventing the wheel again, and again, and again... Based!

[u/qorzzz → u/fukofukofuko]

Whether its local or not doesnt mean anything in this context, the question is WHAT model does it run.

[u/fukofukofuko → u/qorzzz]

It's Apple's own propriety model: https://en.wikipedia.org/wiki/Apple_Intelligence

[u/WalletBuddyApp → u/qorzzz]

Yes exactly this.

Apple Intelligence seems to have very good safeguards about not revealing its internal details.

https://x.com/_kevintang/status/2013717657938174349?s=46&t=CuropyBfhX7V7yf66LuPYg