Name: Sergio Mattei's post on X, curated on eChai
Uploaded: 2026-09-30T01:29:10+05:30
Description: We can finally show what we've been cooking. 🧑🍳 Here's some details about it that I really like: First, the home view is really beautiful--the team cooked with the design. Rich previews the...

OpenAI DevDay 2026

ChatGPT Space

Curated from X →

Sergio Mattei, who works on the Codex app at OpenAI, on the details of Space, a thread of nine posts filed here as one in its own order; Tibo pointed readers to it as the one thing to read about Space. The film is the thread's fifth post, visualizations embedded in a page.

Sergio Mattei 30 Sep 2026

We can finally show what we've been cooking. 🧑‍🍳

Here's some details about it that I really like:

First, the home view is really beautiful--the team cooked with the design. Rich previews the documents you've been working on:

Ask complex questions and generate text inline without breaking flow.

A photo printer generates images for you. Add creative artwork to your Pages.

Turn images and tables into beautiful, widescreen displays.

Embed rich, multiplayer visualizations and apps within your pages.

This one's mind blowing btw--

Prompt blocks. Embed one-click chat prompts for readers.

And to celebrate the launch of Space, we're dropping one more icon choice for your Dock.

Introducing the Spaceblossom.

Appearing shortly in a Settings section near you.

Now, of course, there's so many more amazing things that I haven't mentioned:

⋅Collaborative editing
⋅Bring in your dots to keep pages up to date!
⋅@ChatGPT in the comments
...and much much more

we hope you like it!
https://x.com/ajambrosino/status/2104991411930357862

More from OpenAI DevDay 2026

The verdict

Curated from X →

Token Gremlin at the end of the day, on the gap between what OpenAI built up and what many people were waiting for.

Token Gremlin 5h

I’ve been getting dozens of DMs from people saying how disappointed they were with DevDay, and I think the reason is pretty clear. OpenAI built an enormous amount of hype around this event, so a lot of users went in expecting some kind of “miracle.”

Many were specifically waiting for a direct answer to Opus 5.5 in raw performance. Instead, OpenAI’s answer was much more about speed, efficiency, and cost.

To be fair, a smaller group absolutely loved that approach. GPT-6.1 Sol being much cheaper while getting close to Astra-level capability is genuinely impressive. But for a lot of people, that wasn’t the thing they were waiting for.

Then there’s the usage limits. The announced reductions hit people hard, especially because many users already felt constrained before DevDay. Cutting limits during an event that was supposed to make people excited was always going to leave a bad taste.

And I think Plus users are probably the most frustrated group right now. They were hoping for something meaningful in ChatGPT itself, but GPT-6.1 Sol launched in Work and Codex only. So once again, the obvious question is: "Where is Chat mode?"

I don’t think DevDay was a bad event. There were genuinely impressive launches here. But I do think there’s a very real gap between what OpenAI hyped, what users expected, and what many of them actually received. That’s worth listening to.

@thsottiaux @ajambrosino @JustinBleuel @victornunez @OpenAI @ChatGPT
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From the floor

Curated from X →

OpenAI's developer account on the 48 hours of side quests that followed the keynote.

OpenAI Developers 6h

Ready for a DevDay side quest?

10 builder challenges.
5 Codex Micros up for grabs.

Complete any 5 side quests to earn 1 raffle ticket for each.

48 hours. Join from anywhere 🌎
Dots

Curated from X →

Max Weinbach, an analyst at Creative Strategies, who could not make it to DevDay and had a dot handle the cancellations instead.

Max Weinbach 6h

This is kind of cool with dots

I got a little bit sick in Hawaii and after an 8 1/2 hour delay last Monday, the idea of flying to San Francisco for Dev Day was simply not happening (I appreciate the invite OpenAI, it was just too much all like 5 days before)

But I had dots go cancel my non-refundable hotel and flight and try to get me a refund. It emailed the hotel, who didn’t respond. After 2 days it decided to email the general manager of the hotel and request it, then got the GM to approve the cancellation with no fee. It noticed there was a $210 charge on my card after the GM agreed, so it followed up to ask why for me.

It also submitted a request with Delta for me, citing the 8.5 hour delay and saying the idea of getting on a plane after that was brutal and requesting an exception. I got a call an hour ago from support saying they’ll approve the request and do a full refund.

Couldn’t make it to Dev Day, but it still got me a full refund on 2 non-refundable bookings.

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