Learning Brief — 2026-09-28

What we covered

• AI news: AI & Tech Developments
• PM news: From Lenny's Newsletter: 🎙️ How I AI: Jev for beginners + I left Claude for months, Opus 5.5 brought me back + Opus 5.5 vs. GPT-6 Sol bench
• PM learning: From Lenny's Newsletter: 🎙️ How I AI: Jev for beginners + I left Claude for months, Opus 5.5 brought me back + Opus 5.5 vs. GPT-6 Sol bench

Mental model

Make the next experiment small enough to learn quickly.

Summary

TechCrunch — AI: Shopify opens checkout to browser-based AI agents. Shopify is expanding WebMCP support to checkout, allowing browser-based AI agents to update order details and complete purchases with a buyer’s authorization. The Verge — AI: OpenAI’s AI agents need to catch up. OpenAI popularized the modern generative AI chatbot, but as its 2026 DevDay event approaches, it's fallen behind in one of the industry's hottest categories: continuously running, consumer-facing AI agents. On Tuesday, it will likely try to capture the lead in that race. Rumors abound that OpenAI wi TechCrunch — AI: Nvidia launches new platform for reining in rogue AI agents. As the debate rages over whether the recent spate of rogue AI agents is a step toward AGI or a more conventional engineering problem, Nvidia is offering its own answer to problem. Nvidia CEO Jensen Huang on Monday introduced a toolkit of software and hardware products that add independent security l The Verge — AI: AI is supercharging hacking, and your local hospitals and banks aren’t ready. In March, Janice Malone began getting calls about suspicious activity from her nonprofit organization, Vivian's Door. Vivian's Door, headquartered in Alabama, typically provided training, resources, and community to underserved and minority-owned businesses. The work sometimes put it in close contac TechCrunch — AI: Anthropic releases Sonnet 5.5, which it calls a significantly cheaper, faster work partner. Anthropic has released the newest version of its mid-range model, boasting faster response times and less token burn. TechCrunch — AI: Google is killing off Gemini’s Gems in favor of ‘skills’. As all-in-one AI agents like Meta's Muse and Instinct take off, Google is opting to end a feature which built task-specific agents.

Today's PM news comes from Lenny's Newsletter. The story is 🎙️ How I AI: Jev for beginners + I left Claude for months, Opus 5.5 brought me back + Opus 5.5 vs. GPT-6 Sol bench. For a senior PM, the key takeaway is to watch how product decisions and strategy plays out in practice — not just the headline, but the reasoning behind it.

Today's PM learning comes from Lenny's Newsletter. The core idea is 🎙️ How I AI: Jev for beginners + I left Claude for months, Opus 5.5 brought me back + Opus 5.5 vs. GPT-6 Sol bench. What matters for a senior PM is translating the idea into a repeatable habit: define the user problem clearly, pick a metric that actually reflects value, identify the riskiest assumption, and make the next experiment small enough to learn quickly. Good PM content is rarely magic. It is usually disciplined prioritisation dressed up in nicer prose.