I gave Xcode 27 Beta 1 + Claude Agent my app codebase and set it to work on reviewing the SwiftUI related codebase and suggest improvements in the areas view performance and SwiftUI conformance. I am extremely happy with the results I got. From my experience the Xcode backed Claude Agent is far more versed in SwiftUI related task than pure Claude Code or Claude Code + SwiftUI skill extensions. I was able to visibly increase the performance of several complex views in my app. In addition the Xcode backed agent solved a Liquid Glass related bug with view tinting that I was not able to solve with Claude Code before on its first try. However, in Beta 1 Claude Agent BURNS through tokens at a mind boggling speed. I perceive the agent as a bit to verbose in telling me what it is doing. Allowing the agent to start a simulator and use the app for exploration is setting tokens on fire. I hope that we see refinements in these areas before Xcode 27 is released.

For intents that return complex markdown, code snippets, or structured layouts, what are the rendering capabilities and resource constraints of custom SwiftUI views returned via Snippet inside the Siri voice overlay? Are interactive controls (like buttons, copy-to-clipboard, or scroll views) supported inside the Siri-overlay SwiftUI container?

Hi, I joined the New Siri waitlist on June 8 (the day of WWDC 2026) and as of June 12, I have still not been granted access on iPhone or iPad — that's 4 days with no activation. I used the Terminal workaround on macOS 27 Golden Gate Beta (EnhancedSiriWaitlist → Enabled = NO), which successfully activated New Siri on my Mac. However, it has not synced to my other devices despite being on the same Apple ID with iCloud Siri sync enabled. Device details: Mac mini (macOS 27 Golden Gate Beta) — New Siri active ✓ iPhone (iOS 27.0 Developer Beta 1) — Joined Waitlist since June 8 iPad (iPadOS 27.0 Developer Beta 1) — Joined Waitlist since June 8 Steps already attempted: Multiple restarts on iPhone and iPad Toggled iCloud Siri sync off/on Toggled Siri off/on multiple times iCloud storage sufficient (200GB plan, 53GB used) 4 days seems far beyond normal rollout time. Is this a known issue? Is there anything on the account side that could be blocking activation? Thank you.

I installed the new MacOS Beta 1 on Monday, June 8 and Siri was requested. It is now Thursday, June 11 and I am still on the wait list. The conference is almost over with any interactive sessions. I am concerned that my configuration may be causing a bug. The AppleID I am logged in on the Mac (M4, 24GBs RAM, 512GB storage-130GB free) is not the same as my paid Developer AppleID used to download Xcode, etc. (it is however a Developer ID). This has never been a problem before. Could this be causing an issue? Related question, since I have not gotten the "New Siri" will this actually change the Foundation Models?

Hi everyone, Since today, all my Codex requests have been failing in both Xcode 26.5 and Xcode 27 beta. The Codex integration appears to be connected and authenticated correctly, but every request fails immediately with the error shown in the attached screenshot. Error message: The data couldn’t be read because it isn’t in the correct format.

SystemLanguageModel.contextSize is back-deployed, but SystemLanguageModel.tokenCount is not. The custom adapter toolkit ships with a ~2.7MB tokenizer with a ~150,000 vocabulary size, but the LICENSE.rtf exclusively permits it's use for training LoRAs. Is it possible to back-deploy tokenCount or for Apple to permit the use of the tokenizer.model for counting tokens? This is important to avoiding context overflow errors.

During the Keynote (at 30m:20s) Craig Federighi mentions the second, "even more powerful version of our on-device model" and that this model lets supported products understand and generate speech. Is there any public API for generating speech using this model?

Hi everyone, I’m working with the WWDC26 Foundation Models framework and would like to know how to precisely control which model is used. Specifically: On-Device: How can I force SystemLanguageModel() to use AFM 3 Core Advanced (the 20B sparse multimodal variant) instead of automatically falling back to the 3B Core? Is there an API to query or explicitly specify the on-device model variant? Private Cloud Compute (PCC): When using PrivateCloudComputeLanguageModel(), how can I ensure it uses AFM 3 Cloud Pro instead of the regular Cloud model? Does setting ContextOptions.reasoningLevel = .deep guarantee the Pro model, or is it still determined automatically by the backend? So far I can only check model.capabilities, but there’s no clear way to confirm which exact model variant is actually running. Are there more granular APIs, DynamicProfile modifiers, or Instruments methods to achieve precise control? Any insights, official documentation, or WWDC session references would be greatly appreciated!

Can App Shortcuts (and their trigger phrases) be generated or translated dynamically at runtime based on user-defined configurations (e.g. download-on-demand language models or custom voice aliases), or must all voice shortcuts and translations be statically declared in the application's compiled String Catalogs (.xcstrings)?

Hello, I have an iPhone 15 Pro running iOS 27 Developer Beta. The “Apple Intelligence & Siri” menu does not appear in Settings. I only have the regular Siri menu, and Apple Intelligence features such as Writing Tools are unavailable. I have already: Set my iPhone language to English (US) Set my region to United States Updated to iOS 27 Developer Beta Restarted the device What confuses me is that this same iPhone previously belonged to my father, and I clearly remember Apple Intelligence being available on this device before I signed in with my own Apple Account. After switching to my account, Apple Intelligence disappeared completely. My model number is MV923CH/A. Has anyone experienced this or knows what might be causing it? Thank you.

If some Siri AI features work on cloud why not for older device? Apple Devs mentioned that the Siri AI is available for iPhone 15 and later devices and we can use iCloud+ Subscription to use it more on Apple’s Private Cloud Compute (PCC). So if it can run some functions on Private Cloud why not for people with older device? Or will Apple make it compatible with older devices on upcoming beta updates? Also, I noticed that other Phone companies have these features in phones that are way less powerful than iPhone 11 (Which is a oldest device support iOS 27) I tested some ai models from 3rd party apps that are less than 300MB and it worked very well than the old siri so can We add some Siri features to older iPhone? So we can avoid people from switching to other phones. Because I don’t want my friends leaving iPhone.

Hello, I am using an iPhone 15 Pro and I am currently running iOS 27 Developer Beta. I have a problem with Apple Intelligence. The “Apple Intelligence & Siri” menu does not appear in Settings. I only have the standard Siri menu, and Apple Intelligence features such as Writing Tools, summarization, and other AI functions are unavailable. Here is my current setup: Device: iPhone 15 Pro Software: iOS 27 Developer Beta iPhone Language: English (US) Siri Language: English (US) Region: United States Apple Account Region: Turkey Birth Year: 2007 What makes this situation confusing is that this exact same device previously belonged to my father. I personally saw and used the Apple Intelligence settings and features on this phone before I signed in with my own Apple Account. After signing into my own Apple Account, Apple Intelligence completely disappeared. The “Apple Intelligence & Siri” menu is no longer available and only the regular Siri menu remains. I have already tried the following: Restarted the device Changed the device language to English (US) Changed the region to United States Freed up a significant amount of storage space Updated to iOS 27 Developer Beta My device model number is MV923CH/A. Could this be related to my Apple Account, the device’s regional variant, or an issue with iOS 27 Beta? Has anyone experienced something similar or found a solution? Thank you.

Just installed the new Xcode 26.4 RC build (17E192) after happily using 26.3 for a few months. I'm noticing some immediate regressions in the Intelligence features: Frequent losing of OAuth token (Claude Agent). This had previously been fixed and now is back. Agent "Thinking" is constrained to thought bubble windows, which are (a) too small to read, (b) not scrollable when thinking goes beyond a few paragraphs. Yes they are tappable when thinking is finished, but this doesn't help. Due to (2), in deep thinking, it's impossible to follow progress beyond the visible window, so impossible to know if the agent is going off the rails. I'm noticing just more general slowness to complete tasks. Not just complete them -- it seems like it takes longer to START tasks, which is really weird. It sits there thinking for longer. Same project, same model as before. Every time you tap "New Chat" it presents both Claude and Codex choices, even if you're only signed into one. This turned a simple single tap into now a required two taps. Overall this feels like a frustrating setback after a very positive user experience in 26.3.

Hi, I'm setting up Xcode and after updating MacOS to 15.2 and Xcode to 16.2, I cannot download the Predictive Code Completion Model. I've done some research and I haven't found any solution, specially since most people suggest that it randomly fixed itself, which for me hasn't been the case. I've tried restarting my Mac, uninstalling and reinstalling Xcode multiple times, I've also reinstalled MacOS from Recovery and haven't found any success (I'm also not running Xcode inside a VM, as I've seen this can cause some problems in this case). This is the error that I receive when I attempt to download the model: And here are the details: The operation couldn’t be completed. (IDELanguageModelKit.IDEModelDownloadAdapter.(unknown context at $11eba9a90).DownloadError error 3.) Domain: IDELanguageModelKit.IDEModelDownloadAdapter.(unknown context at $11eba9a90).DownloadError Code: 3 User Info: { DVTErrorCreationDateKey = "2024-12-26 23:09:25 +0000"; } -- There was an error processing the asset. Domain: IDELanguageModelKit.IDEModelDownloadAdapter.(unknown context at $11eba9a90).DownloadError Code: 3 -- System Information macOS Version 15.2 (Build 24C101) Xcode 16.2 (23507) (Build 16C5032a) Timestamp: 2024-12-26T17:09:25-06:00 For the record, I'm a new developer and I'm still learning, so thank you very much!

Hi, I'm integrating the Genmoji API (NSAdaptiveImageGlyph) into my app and would like to confirm two things: Local editing of generated Genmoji. After the user creates a Genmoji, can the app apply edits to the resulting image (e.g., pixelation)? The edited image would be stored only on-device within the app and never shared externally. Use outside text contexts. Can a generated Genmoji be used in other parts of the app, such as a home screen widget? Apple's documentation and the WWDC24 session focus on inline text, stickers, and Tapbacks, but I couldn't find explicit guidance on widget or other UI usage. I checked the Human Interface Guidelines, WWDC24 session "Bring expression to your app with Genmoji," and the App Store Review Guidelines, but couldn't find clear answers. Any guidance or pointers would be appreciated. Thanks!

Hi, I'm stuck distributing a custom FoundationModels adapter as an Apple-hosted managed asset pack via TestFlight. Everything looks correctly configured end to end but the download just never starts and the statusUpdates sequence is silent. Here's my configuration: App Info.plist: <key>BAHasManagedAssetPacks</key><true/> <key>BAUsesAppleHosting</key><true/> <key>BAAppGroupID</key><string>group.com.fiuto.shared</string> Entitlement com.apple.developer.foundation-model-adapter on both the app and the asset downloader extension. The asset downloader extension uses StoreDownloaderExtension , returning SystemLanguageModel.Adapter.isCompatible(assetPack) from shouldDownload , and the app group on app and asset download extension is the same. I have exported the adapter with toolkit 26.0.0, obtaining: adapterIdentifier = fmadapter-FiutoAdapter-1234567 I have packaged the asset pack using xcrun ba-package and uploaded it to App Store Connect via Transporter, and I get the "ready for internal and external testing" state on App Store Connect, and I have uploaded my app build on TestFlight after the asset pack was marked as ready. I used this code: let adapter = try SystemLanguageModel.Adapter(name: "FiutoAdapter") let ids = SystemLanguageModel.Adapter.compatibleAdapterIdentifiers(name: "FiutoAdapter") // ids == ["fmadapter-FiutoAdapter-1234567"] for await status in AssetPackManager.shared.statusUpdates(forAssetPackWithID: ids.first!) { } I expect the download to start and the stream to yield first .began, then .downloading(progress) and .finished. Actually, compatibleAdapterIdentifiers returns the correct ID, the stream is correctly acquired but i get zero events, so no .began/.downloading/.failed/.finished. Important things: I don't get any error in Console as well; I tested this as an internal tester on TestFlight Tested on iPhone 16 Pro, running iOS 26.3.1 - more than 50GB of free space Apple Intelligence is enabled and set in Italian Background downloads are enabled. I've already checked if the adapter identifier matches regex fmadapter-\w+-\w+ , i tried to reinstall the build, rebooting the device, reupload the asset pack, and also checked that the foundation models adapter entitlement is present on both targets. Is there a known way to diagnose why statusUpdates is silent (no log subsystem seems to show why) in this exact configuration? Is there maybe any delay between asset pack approval on App Store Connect and availability to TestFlight internal testers that I do not know of? I've checked other threads for applicable solutions and I've found that this is similar to the symptom reported in this thread: https://developer.apple.com/forums/thread/805140 / (FB20865802) and also i'm internal tester and on stable iOS 26.3.1, so the limitations from this thread: https://developer.apple.com/forums/thread/793565 shouldn't apply. Thanks

Setup: macOS 26.4 Xcode 26.4 Claude premium subscription Claude account logged in Xcode settings The issue usually surfaces after initially setting up Claude integration in Xcode and then leaving Xcode open for at least a day or so. The integration works initially (right after logging in). But then after some time it starts responding with this error. Failed to authenticate. API Error: 401 {"type":"error","error":{"type":"authentication_error","message":"OAuth token has expired. Please obtain a new token or refresh your existing token."},"request_id":"req_011Ya....."} Restarting Xcode does not help. The only thing that helps is log out from Claude account and log back in. Sounds like the token refresh logic is broken or missing. Please improve moving forward.

Hi guys, Two annoying issues I'm having at the moment with agentic coding. Xcode signs out of Claude every single day and gives the error Failed to authenticate. API Error: 401. The only solution is go to settings and sign out of Claude and in again. Apple removed the little arrow to select the model, so now every time you start a new conversation you have to pick the model. I just want to start a new conversation with the model I'm using. The extra click is a time waster. Any solutions would be appreciated. Thanks

After installing iOS 26.4 the Foundation Models instruction following and tool calling capabilities have been degraded significantly. The model is not usable anymore. Examples: This works: "Is the car plugged in?" This does not work: "Tell me if the car is plugged in" Anything with the work "frunk" (front trunk) triggers Guardrail Violation. Phrases like "Lock Pride" also trigger Guardrail Violation (Pride is the name of the car). Tool calling only works half the time for really obvious things.

I'm trying to use Xcode 26.3's official MCP Server (xcrun mcpbridge) on an Intel Mac（15.7.4）, but it crashes immediately. Run xcrun mcpbridge in Terminal： dyld[3809]: Symbol not found: _$s10AppSandbox17ASBBinaryIdentityC14teamIdentifierSSSgvg Referenced from: /Applications/Xcode.app/Contents/Developer/usr/bin/mcpbridge Expected in: /System/Library/PrivateFrameworks/AppSandbox.framework/Versions/A/AppSandbox [1] 3809 abort xcrun mcpbridge Observations The same command works on an Apple Silicon Mac (M1, macOS 26.3).