Welcome to the AI Marketing News Round Up. This is Volume 2 for the week of March 29, 2026.
The JPM AI Marketing Dispatch — March 29, 2026.
This week: Anthropic’s Mythos/Capybara model leaked, positioning it as the most capable model to date. OpenAI completes pre-training on Spud as Sora officially shuts down. Shopify agentic storefronts go live inside ChatGPT for 5.6 million merchants. Claude Computer Use launches on macOS. Google and YouTube launch Gemini-powered Creator Partnerships. Anthropic drops long-context pricing surcharge and adjusts peak-hour rate limits. Yahoo Scout introduces Sponsored Events in Gmail. GEO adoption reaches 55% of marketers. Picsart launches an AI agent marketplace for creators. OpenAI renames its safety org to AGI Deployment.
Recap
Anthropic confirms it is testing Mythos, a powerful new AI model described as a “step change in capabilities,” after a data leak (codenamed Capybara) revealed its existence. Meanwhile, OpenAI CEO Sam Altman teased “Spud,” a model he says can “really accelerate the economy,” while the company quietly shut down Sora and renamed its AGI deployment framework.
Claude can now control your Mac. Anthropic launched Computer Use for macOS, letting Claude navigate apps, click buttons, and complete multi-step workflows directly on your desktop. The company also dropped its long-context pricing premium, making 1M-token inputs available at standard rates while introducing peak-hour rate limits.
Shopify is betting big on agentic commerce. The platform unveiled agentic storefronts that let AI agents browse, compare, and purchase products on behalf of consumers. On the ad side, Google and YouTube launched Gemini-powered creator partnership matching to help brands find the right influencer collaborations using AI.
Yahoo Scout is turning inbox and search data into sponsored experiences with a new AI-powered ad format that blends personalization with commerce. Generative Engine Optimization (GEO) adoption has hit 55% among marketers, according to Foundation’s latest research, signaling that optimizing for AI-generated search results is becoming standard practice.
Picsart launched an AI agent marketplace where creators can hire specialized AI assistants for design, editing, and content tasks. And ChatGPT’s revamped shopping experience is already showing strong click-through rates, pushing OpenAI deeper into product discovery and instant checkout.
About Jason Pollak
Jason Pollak is a marketing strategist with over 10 years of experience building campaigns for entertainment brands, artists, and businesses across music, film, television, eCommerce, and B2B SaaS. As Director of Marketing at Young Money Entertainment, he grew Lil Wayne’s Facebook following from 10 million to 50 million and managed over 60 million followers across the roster. He also served as Paid Media Director at Horizon Media, launching major TV shows for History Channel, A&E, WWE, and Lifetime, and led film marketing for Utopia Distribution, generating over $10 million in revenue on a $200K media spend. Jason specializes in paid media, organic social strategy, email automation, SEO, content development, and AI-driven marketing systems. He holds a BA in English Literature from Binghamton University and a Masters in Media Studies from Brooklyn College. Learn more at jasonpollakmarketing.com.
Related reading: Claude Cowork for Marketers: How to Delegate Real Tasks to AI on Your Desktop