Linas's Newsletter

Linas's Newsletter

The browser died today: OpenAI and Stripe launch Instant Checkout & the Agentic Commerce Protocol 🤖💳🤖; European banking giants unite to challenge US stablecoin supremacy 🪙🇪🇺

FinTech is Eating the World, 30 September

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Linas Beliūnas
Sep 30, 2025
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Hey Everyone,

Good morning & happy Tuesday! Today’s issue is one of the most impactful ones yet as we’re going to look into OpenAI and Stripe, which just launched Instant Checkout & the Agentic Commerce Protocol (why it’s a game-changer that just killed the browser, what’s next & how FinTechs and other finance firms must adapt + bonus deep dives into Shopify, Google’s & Coinbase’s agentic payments protocols, top AI agent startups and more inside!), and European banking giants that are now uniting to challenge US stablecoin supremacy (what’s the USP here, why it matters and what this means for the future of payments + bonus dive into Cloudflare’s NET Dollar and the ultimate list of stables resources inside). So let’s just jump straight into the groundbreaking stuff 🌶️

The browser died today: OpenAI and Stripe launch Instant Checkout & the Agentic Commerce Protocol 🤖💳🤖

The BIG News 🗞️ $500 billion AI giant OpenAI just introduced Instant Checkout within ChatGPT alongside the Agentic Commerce Protocol (ACP), developed in partnership with FinTech titan Stripe.

This launch enables US-based ChatGPT users across Free, Plus, and Pro tiers to discover and purchase products directly within conversational interfaces, fundamentally altering the traditional e-commerce journey.

E-commerce used to mean 10+ clicks across apps. Now it’s 1 conversation 🤖

Discovery → Comparison → Payment. All inside ChatGPT.

Let’s take a deeper dive into this, understand how it changes the payments game forever, and what to do next to be ready for the agentic AI era.

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