OpenAI Dev Day 2026: The releases that actually matter

More from How I AI

1. 

   5 Oct 2026 · 36 min

   How OpenAI uses ChatGPT Sites (live at DevDay!) | Kath Korevec (Product Lead)

   Kath Korevec is a member of the Product staff at OpenAI working on Codex, and she spent over a year building and using ChatGPT Sites internally before its public launch. She’s been on the front lines of shipping Plugin Insights, MCP plugin hosting, and the connector ecosystem, which now includes around 60 integrations. What you’ll learn: What Plugin Insights actually does, and why it changes who can use a site The incident command site Kath built for her OpenAI team, and how it uses live Slack and Notion connectors The one phrase that tells Codex to wire up connectors for you The…

2. 

   30 Sep 2026 · 46 min

   Jev: 8 real use cases for the fastest, cheapest model I’ve ever used | John Lindquist

   John Lindquist created egghead.io, a developer education platform used by hundreds of thousands of working engineers. These days he’s building mega.dev, a hands-on program specifically for developers who want to do real work with AI agents, not just prototype them. What you’ll learn: Why Jev is a decision engine, not a chatbot, and what that distinction actually changes about how you build How John built a real-time voice to-do app that classifies and executes commands with no visible pause The data deduplication pattern that merges messy records in milliseconds using confidence scores Why…

3. 

   28 Sep 2026 · 26 min

   Jev for beginners: how to use it and what to build

   Jev is TypeSafe AI’s new decision model. It returns type-safe structured values (a choice, a score, a probability) instead of generated text, at 4 cents per million input tokens with no output charge. This week I ran it on five real projects: PR categorization, a meta-analysis of my own Claude and Codex sessions, Gmail triage, the ChatPRD product insights graph, and a live audience dashboard built from 4,500 YouTube comments. What you’ll learn: What makes Jev fundamentally different from every other model I’ve used How I analyzed 1,700 PRs for 9 cents and what I found out about where my…

4. 

   22 Sep 2026 · 39 min

   Opus 5.5 vs. GPT-6 Sol: which model won my blind taste test?

   I got up early to record an Opus 5.5 review. Then Anthropic and OpenAI dropped new models on the same morning, and I decided to do something I’d never done before: take the How I AI bench live. I put GPT-6 Astra, GPT-6 Sol, Claude Opus 5.5, and more through the work I actually care about: emails, PRDs, frontend prototypes, backend work, long-running agents, SVGs, and video editing. I scored the outputs without knowing which model made them, so you get to watch me make predictions, change my mind, and reveal my own very inconsistent taste. Astra won my heart. Opus 5.5 won my week. Sol still…

5. 

   22 Sep 2026 · 25 min

   I left Claude for months. Opus 5.5 is why I'm back

   I’ve been off Claude for months. Not because it got dumb, but because it got annoying. The rambling, the hedging, the preachy little disclaimers on tasks that didn’t need them. I moved most of my daily work to Codex and I didn’t miss it. Then Anthropic shipped Opus 5.5: 40% cheaper than Opus 5, faster, and with what they’re calling a fundamentally different alignment approach. I ran it for a week across real work, including four long-running agentic tasks, a full ChatPRD homepage redesign, an SVG benchmark, and one very firm refusal, and I’m ready to give you the honest verdict. There’s a…

6. 

   21 Sep 2026 · 47 min

   How Warp ships 2,000 PRs a month with AI factories | Zach Lloyd (CEO, Warp)

   Zach Lloyd is the co-founder and CEO of Warp, an AI-powered terminal and software factory platform used by tens of thousands of engineers. Before Warp, he spent nearly a decade at Google, including time as a principal engineer on Google Sheets. He built Warp from the ground up as a modern, AI-native alternative to legacy terminals, and the team has since expanded into software factories: a full cloud-based system that takes an idea in Slack all the way through to a merged PR. In this episode: Why a software factory is more than a coding agent The public Slack → Linear → GitHub → QA workflow…

7. 

   16 Sep 2026 · 37 min

   Muse review: The personal AI agent that gets consumer UX right

   I spent a few hours putting Meta’s Muse, its new personal AI agent, through a real first-pass test: onboarding, calendar management, goal setting, a one-shot family morning newsletter, browser-based shopping, and the animated avatar that honestly surprised me. What you’ll learn: Why Muse is the best-designed personal agent I’ve tested, and what specifically made it feel that way The one-shot family PDF Muse produced that Claude and Codex never quite nailed How Muse’s permission model works, and why it’s different from every other agent I’ve used Why I set up a sleep training goal in Muse,…

8. 

   14 Sep 2026 · 42 min

   How Grok Bot designers use AI agents to build personal sites and product prototypes | John Bai & Peng Zheng

   John Bai and Peng Zheng are designers on the Grok Bot team at SpaceXAI, where they’re building one of the most talked-about AI products right now. John writes publicly about his design process (his piece “Designing Grok Bot with Grok Bot” has already made the rounds) and shares bot templates with the design community. Peng brings a product-design sensibility to personal tools, and his website doubles as a live demo of what he builds. What you’ll learn: How Peng built a self-updating personal website using Grok Bot as the entire backend pipeline, with no CMS and no Figma file The exact…

9. 

   7 Sep 2026 · 50 min

   Build your own company brain: the enterprise AI playbook from Stripe’s engineering team | Sharadh Krishnamurthy

   Sharadh Krishnamurthy is an engineering manager at Stripe, where he helped build Kai, the company’s internal AI agent used by more than 10,000 employees every week. He’s worked across several of Stripe’s core infrastructure teams, including data and developer experience, which gives him a grounded, systems-level perspective on what it actually takes to make AI work at enterprise scale. He’s currently focused on the governance, skills, and infrastructure layers that let every Stripe employee use AI safely and effectively, regardless of their technical background. What you’ll learn: Why Stripe…

10. 

    3 Sep 2026 · 32 min

    GPT-6 Astra is a banger - here’s everything I’ve built

    I got early access to GPT-6 Astra: when I say this model broke through tasks I couldn’t crack with 5.6 Sol or Fable, I mean it specifically: the ChatPRD product intelligence feature, building 3D games, the hardware hack, and a handful of one-shot coding projects I’d tried and failed on repeatedly. What you’ll learn: Why Astra’s computer use feels different, and which production tools I’m trusting it with The one feature I’d thrown every model at for six months, and what finally got it to 90% How I’m using browser use for QA, not building, and what it found that I would’ve missed Why I think…

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