Ios 26 Launches Sept 15 – Even GPT-5 Doesn't Know It Exists
Key topics
Prompt: "Without conducting any research or inference, what is iOS 26?" GPT-5: "iOS 26 does not exist within my training data" Claude 4.1: "I don't have any information about iOS 26" Gemini: "I cannot answer your question about iOS 26"
They don't know it exists, let alone Apple Intelligence updates.
Try asking for actual code: "Write iOS 26 Foundation Models code" "What's SystemLanguageModel in iOS 26?" "How do I implement Liquid Glass design?"
Complete failure across all models. No AI assistant - not even GPT-5 - can write iOS 26 code. With 12 days until release, developers need to ship iOS 26 apps without AI support.
The urgency: - Apple Intelligence requires Foundation Models - Liquid Glass design becomes 'mandatory' - To be perceived as modern, apps need updates by Sept 15
Since July, I've documented iOS 26's frameworks in LLM-ready format.
31 technical files covering Foundation Models, Liquid Glass, Swift Charts, migration patterns - all tested on iOS 26 beta.
https://llmbridge.gumroad.com/l/elbve
The knowledge gap is real.
The tech world is abuzz as iOS 26 is set to launch on September 15, but major AI models like GPT-5 and Claude 4.1 are clueless about its existence, let alone its features. Commenters chimed in, pointing out that enabling web search capabilities can help these models adapt to new information, but the original poster, rileygersh, countered that this approach comes with latency and compute costs. As the release date looms, developers are faced with the daunting task of updating their apps to be compatible with iOS 26's new features, such as Foundation Models and Liquid Glass design, without the aid of AI support. Rileygersh is selling a bundle of technical files and training data for iOS 26, sparking a debate about transparency and the value of such resources.
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Front-loading the knowledge processing means every subsequent interaction is faster and lighter than triggering new searches.
This touches on an interesting concept - knowledge arbitrage - this information has a shelf life, once the SOTA LLMs know about iOS 26 my files turn into the Beta Max of training data.
Here's how i did it:
https://rileygersh.medium.com/how-i-gave-claude-gemini-knowl...
oh noes! the tragedy! the horror! /s
But in all seriousness, if you are trying to say "buy my book", just say it. This post is clearly marketing for your gumroad content. Self-promotion is allowed on HN, once in a while, within reason. Your posting history shows you aren't really falling within that "once in a while" guideline. But even if you were... if you are going to self-promote, step up and do it. The only thing more annoying than someone who does nothing but self-promote is when they do so without transparency.
The post demonstrates a real problem (LLMs don't know iOS 26 exists) and offers a solution I created. The urgency is genuine - iOS 26 releases September 15 and developers are finding their AI tools useless for Foundation Models work. Some dev somewhere is praying they don't have to work through Labor Day weekend debugging Foundation Models without AI help. We're all now used to AI assistance - losing it for new frameworks hurts.
Regarding posting frequency - I posted about this in July when I first created it, now again 6 weeks later because the landscape paradoxically hasn't changed: Claude 4.1 and GPT-5 both released post-WWDC yet still don't know iOS 26.
The value proposition is straightforward: Aggregating and structuring iOS 26 documentation saves developers countless hours of searching and piecing together fragments. At $19.99, it's less than 15 minutes of developer time.
I appreciate the direct feedback.
The post could have been more upfront about the commercial aspect while still demonstrating the technical problem.