Richard Wei

I lead the Foundation Models framework @ Apple

[Richard Wei @rxwei]

And now it's available via `pip install apple-fm-sdk`

[Richard Wei @rxwei]

Today we are introducing a Python SDK for Mac's on-device LLM! https://t.co/LQVp2EheLO https://t.co/mcJh9M1DaW

[Richard Wei @rxwei]

@mattt Nice work!!

[Richard Wei @rxwei]

https://t.co/Cze6KtBLnI

[TechCrunch @TechCrunch]

A list of apps that are using Apple's local models to introduce new features. https://t.co/kQU6E4XQRC

[Richard Wei @rxwei]

Trying out lots of new apps from App Store today! Love all these delightful features leveraging our on-device LLM 🤩 #iOS26

[Connor @Jchammond_]

Prime example for how to apply Foundation Models in your app

[Charlie Chapman @_chuckyc]

My @DarkNoiseApp update with the new iOS 26 Liquid Glass design, and a new Magic Mix feature (demoed here) powered by the new Foundation Model API & Apple Intelligence is ready for tomorrow's release!

If you're press writing about app updates, my press release is below 🧵👇

[Shun Takeishi @ShunTakeishi]

9/11だけではありますが、Foundation Model フレームワークのエンジニアも参加してくれることになりました。もし直接エンジニアと話したいって方は9/11にぜひご応募ください。また、9/9,10の枠も、もちろんお待ちしております。

[Richard Wei @rxwei]

The team that built the Foundation Models framework is hiring! Join us to create the best LLM APIs, both for app developers and for Apple teams.
https://t.co/OWZuGOUjaO

[Richard Wei @rxwei]

@rudrank That’s right — guardrails will no longer be triggered by sensitive/controversial topics that are not fundamentally unsafe. If you ask the model to summarize or rewrite such content, the model will do as told; otherwise, the model may still refuse with an explanation.

[Richard Wei @rxwei]

@rudrank That’s right — guardrails will no longer be triggered by sensitive/controversial topics that are not fundamentally unsafe. If you ask the model to summarize or rewrite such content, the model will do as told; otherwise, the model may still refuse with an explanation.

[Shashank Prasanna @shshnkp]

If you missed the WWDC25 recap broadcast, video is now on Youtube! I cover:
- On-device LLM using the Foundation Models framework
- Custom models using CoreML
- Latest research models using open-source MLX
and more! Enjoy!
https://t.co/leu2pBjc7o

[Richard Wei @rxwei]

@JPEGuin You need to recompile your app using Xcode 26 beta 5 to run the app on OS 26 beta 5. We made some final API improvements and removed APIs that were deprecated in previous betas.

[Richard Wei @rxwei]

@JPEGuin You need to recompile your app using Xcode 26 beta 5 to run the app on OS 26 beta 5. We made some final API improvements and removed APIs that were deprecated in previous betas.

[Erik Hornberger @mopperson]

iOS 26 Beta 5 dropped today and contains some exciting additions to the Foundation Models framework. (1/6)

[NatashaTheRobot @NatashaTheRobot]

New Blog Post: Using the FoundationModels Framework for Streaming from external LLM providers

Link below in comments...

[Rudrank Riyam @rudrank]

There is a new refusal case with explanation. They explicitly mention that a token is 3-4 characters in English.

I had asked for a property to keep count of it in a feedback but the response was that it is not on the engineering team's roadmap

[Rudrank Riyam @rudrank]

Biggest change in foundation model framework!

There is a new permissiveContentTransformations guardrail!

[Richard Wei @rxwei]

@rudrank @NatashaTheRobot @emcro @SwiftyAlex @_julianschiavo +1. An example (prompt + code) that reproduces the issue is the best kind of actionable feedback. We'd like to look into this!