First impressions of GPT-6 Astra from developers // TRAIN BRAIN

First impressions of GPT-6 Astra from developers

See what Ben Davis, Peter Gostev, and Tom Krcha are building with GPT-6 Astra, from a playable 3D history of London to new directions for a matcha shop website to solving a DEF CON puzzle with parallel agents.
GPT-6 Astra helps them explore ideas, stay on track, and tackle problems that previously felt out of reach.

OpenAI

OpenAI’s mission is to ensure that artificial general intelligence benefits all of humanity. ...

Introducing the Decisions API

Building a custom website to stay on top of business with ChatGPT

The dots demo, take two | OpenAI DevDay 2026

Introducing dots, always-on agents built to handle everything.

The Defender's Window at enterprise scale with Standard Chartered

Building the partner ecosystem with Sophos

GPT-6 Astra in practice: Turning ideas into projects

Jump Trading points GPT-6 Astra to its most ambiguous, difficult tasks

Reimagining IT with ChatGPT

Meet ChatGPT: Ask Your First Question | OpenAI Academy

How to Ask ChatGPT Better Questions | OpenAI Academy

Use ChatGPT to Organize Everyday Tasks | OpenAI Academy

How to Spot Scam Messages with ChatGPT | OpenAI Academy

ChatGPT Privacy: What Not to Share and When to Double-Check | OpenAI Academy

Create a Coloring Page with ChatGPT | OpenAI Academy

Assess Usage and Value of ChatGPT Work

Detecting wildfires with ChatGPT

How Fyxer built an AI executive assistant people trust

GPT-6 Astra needs less babysitting

GPT-6 Astra added unexpected details

GPT-Live-1 is now in the API

GPT-6 Astra handles the editing busywork

GPT-6 Astra built a font playground

Introducing the Agents API

In Harmony

Two blind brothers using ChatGPT to navigate life and run their nonprofit

Helping a small business go big with ChatGPT

Discovering new antibiotics with ChatGPT

ChatGPT Work, now powered by GPT-6 Astra

GPT-6 Astra turned London into a game

GPT-6 Astra First Impressions From Businesses

Introducing GPT-Image-2.5 in the API

Templates with ChatGPT Images 2.5

Introducing ChatGPT Images 2.5

GPT-6 Astra cracked a DEF CON puzzle

Use ChatGPT Work to analyze ad performance and refine creative

Use ChatGPT Work to build custom creative tools

Use ChatGPT Images to explore campaign concepts

Use ChatGPT Work to create campaign emails

Use ChatGPT Work to turn marketing ideas into finished work

First impressions of GPT-6 Astra from developers

Introducing GPT-6 Astra: the most intelligent and aligned model in the world.

Tennis (:30)

Use Your Computer and Browser

Talk to ChatGPT Work

Create Slides, Docs, and Templates

Use ChatGPT Work on Your Phone

Build a Shareable Site

Scheduled Tasks

Getting Started with ChatGPT Work

Delivering more meals to more moms with ChatGPT

How to Build a Personalized Meal Planner with ChatGPT Work

Retirement

Soccer

Mochi

Tennis

Science Class

What Codex Unlocks for loveholidays

How to Manage Your Workspace With ChatGPT Work

Build agent-ready sites with WebMCP

Codex, but make it weird. Hahahacks.

No Limits on Text Chats with ChatGPT

Make information visual with ChatGPT

You Can Just Use Your Voice | ChatGPT Work

What Codex Unlocks for NTT Data

How to Turn a Business Question Into a Strategy Deck With ChatGPT Work | Tutorial

How to Create a Solid Blog Draft With ChatGPT Work | Tutorial

How to Prepare for Customer Meetings With ChatGPT Work | Tutorial

How Base44 Uses GPT-5.6 to Build Apps With 20% Fewer Tokens

Previewing Ultrafast mode: GPT‑5.6 Sol at up to 14X the speed

Inside Cricket’s Smartest Backroom | Rajasthan Royals | ChatGPT @rajasthanroyals

Computer History in ChatGPT

Previewing Ultrafast mode: GPT‑5.6 Sol at up to 14X the speed

Get a daily CFO briefing with ChatGPT Work

Build custom financial forecasting apps with ChatGPT Work

Reconcile quarter-end financials with ChatGPT Work

Use ChatGPT Work to deliver board-ready reporting

Use ChatGPT Work to build custom forecasting apps

You can just finish the work | ChatGPT Work

How to Schedule a Weekly Metrics Report With ChatGPT Work