OpenAI Dev Day 2026: The releases that actually matter

OpenAI unveiled Dots, Spaces, Sites, the GPT-6.1 Sol model, the vision-enabled Decisions API, and Astra ultrafast at its DevDay 2026 event in San Francisco, according to a first-person account from developer and ChatPRD founder Claire Vo. Vo tested the releases early, building a collaborative sketchpad with Astra ultrafast and a prompt-driven 3D world for her kids that cost about $97, and said she is still withholding a full verdict on Dots while calling Spaces potentially one of the most underhyped announcements for human-agent collaboration. The episode also covers the Agents API, computer use, plugins, and Codex plan updates.

I spent the day at OpenAI’s DevDay in San Francisco, and I have good news and bad news: OpenAI released a lot of stuff. In this episode, I break down the announcements worth paying attention to - and show you what happened when I tested some of them early. We’ll meet my Dot, explore why Spaces and Sites could matter for how teams work, and get into the model and API updates I’m most excited about as a developer. I use the Decisions API to find podcast thumbnails where nobody looks awkward, build a collaborative sketchpad with Astra ultrafast, and let my kids redesign a 3D world in real time. That last experiment cost about $97. My wallet has thoughts. These are my early impressions: what’s promising, what still feels rough, and what I think you should try first. Listen or watch on YouTube https://youtu.be/pJNM1z9l5mU , Spotify https://open.spotify.com/episode/6YEf51ENKks86DejRTOi23 , or Apple Podcasts https://podcasts.apple.com/us/podcast/openai-dev-day-2026-the-releases-that-actually-matter/id1809663079?i=1000792403879 What you’ll learn: 1. What OpenAI’s Dots can do, how I’ve been using mine, and why I’m waiting to give a full verdict 2. Why Spaces might be one of the most underhyped announcements for collaboration between humans and agents 3. How Sites with connectors and plugins could help teams share internal tools with the right data permissions 4. Where GPT-6.1 Sol fits in my model stack—and why speed and cost matter 5. What vision adds to the Decisions API, including my thumbnail-selection and hot dog demos 6. What Astra ultrafast makes possible for interactive AI apps, from collaborative drawing to a changing 3D game 7. Where the speed feels magical, where the experience still needs work, and what it costs In this episode, we cover: 00:00 https://www.youtube.com/watch?v=pJNM1z9l5mU OpenAI DevDay recap—and pressing the Codex reset button 00:58 https://www.youtube.com/watch?v=pJNM1z9l5mU&t=58s Dots: early impressions and rough edges 06:57 https://www.youtube.com/watch?v=pJNM1z9l5mU&t=417s&pp=0gcJCWMAwfN6Pr3D Spaces: working with humans and agents 10:37 https://www.youtube.com/watch?v=pJNM1z9l5mU&t=637s Sites, connectors, and sharing internal tools 13:06 https://www.youtube.com/watch?v=pJNM1z9l5mU&t=786s Models and platform: GPT-6.1 Sol 14:36 https://www.youtube.com/watch?v=pJNM1z9l5mU&t=876s Decisions API: fast decisions with vision 15:27 https://www.youtube.com/watch?v=pJNM1z9l5mU&t=927s Finding better podcast thumbnails with AI 16:29 https://www.youtube.com/watch?v=pJNM1z9l5mU&t=989s Hot dog or not hot dog? 17:17 https://www.youtube.com/watch?v=pJNM1z9l5mU&t=1037s Astra ultrafast: speed, pricing, and possibilities 18:50 https://www.youtube.com/watch?v=pJNM1z9l5mU&t=1130s The Other Pencil: drawing alongside AI 19:45 https://www.youtube.com/watch?v=pJNM1z9l5mU&t=1185s Little Starship: a 3D world you can change with a prompt 21:24 https://www.youtube.com/watch?v=pJNM1z9l5mU&t=1284s The $97 AI game—and what it makes possible 22:25 https://www.youtube.com/watch?v=pJNM1z9l5mU&t=1345s Agents API, computer use, plugins, and plan updates 23:03 https://www.youtube.com/watch?v=pJNM1z9l5mU&t=1383s What I’d try first Tools referenced: • ChatGPT: Dots, Spaces, and Sites: https://chatgpt.com/ https://chatgpt.com/ • Codex: https://openai.com/codex/ https://openai.com/codex/ • OpenAI API — GPT-6.1 Sol, Decisions API, and Astra ultrafast: https://platform.openai.com/ https://platform.openai.com/ • Jev: https://typesafe.ai/ https://typesafe.ai/ Other references: • OpenAI DevDay 2026: https://devday.openai.com/ https://devday.openai.com/ Where to find Claire Vo: ChatPRD: https://www.chatprd.ai/ https://www.chatprd.ai/ Website: https://clairevo.com/ https://clairevo.com/ LinkedIn: https://www.linkedin.com/in/clairevo/ https://www.linkedin.com/in/clairevo/ Production and marketing by https://penname.co/ https://penname.co/ . For inquiries about sponsoring the podcast, email \ email protected\ https://www.lennysnewsletter.com/cdn-cgi/l/email-protection .