You can now make Claude your iPhone's Siri — and two more AI shifts that landed at once

In two days, Apple, OpenAI, and Google all rebuilt the assistant you use. The common thread for builders: the model behind your tools, and the one you reach for, is being swapped out from under you — and now you get to pick it.

Here's the 90-second video version if you want the quick pass first:

1. Apple opened Siri — and you can set Claude as your default AI

At WWDC 2026 (Tim Cook's final keynote), Apple shipped a rebuilt Siri that runs on a custom 1.2-trillion-parameter Google Gemini model, with a three-tier routing system: simple requests stay on-device, harder ones go to Apple's Private Cloud Compute, the heaviest route to Google Cloud.

The part that matters for builders: iOS 27 lets you set Claude, ChatGPT, Gemini, or Grok as your default AI across Siri, Writing Tools, and Image Playground.
Apple reportedly pays Google around one billion dollars a year for the model, and anonymizes data before it reaches Google.

Why it matters: the phone's system-level assistant is no longer a single closed provider. If you build with Claude, you can now make it the default surface on the device — and the same opening is a new distribution channel for anyone shipping an AI experience.

2. OpenAI is rebuilding ChatGPT into an agent "superapp"

OpenAI is rolling out its largest ChatGPT redesign since launch: from a question-and-answer tool into a superapp that takes actions for its ~900 million weekly users. "Chat is dead," a senior employee told the Financial Times. (This is the realization of the May plan to unify ChatGPT, Codex, and the API.)

Agents book travel, write code, and run multi-step tasks.
Third-party apps like Canva and Booking run inside ChatGPT over MCP, with checkout via Stripe.

Why it matters: if you build tools, ChatGPT is becoming a platform you can ship into — exposed over MCP, so your app can live where users already are. Agentic commerce (apps on MCP, payments on Stripe) is the surface to watch.

3. Gemini 3.5 Flash is now the default everywhere

Google made Gemini 3.5 Flash the default model for the Gemini app and AI Mode in Search, globally — roughly four times faster than comparable models, at lower cost. In Gemini Enterprise it's enabled by default and can't be switched off. (Follow-up to last month's Flash pricing change.)

Why it matters: the model quietly running behind Search and the Gemini app just changed. If you call Gemini in your stack, it's worth re-testing your cheap, high-volume calls on Flash — frontier-level quality at 4x speed is the kind of thing that moves your API bill.

The assistant you use, the platform you build on, and the model behind your stack all moved at once. Watch today's full episode, or catch a new one every day on dani / AI News & Creative.