Plan a vacation with a custom Codex-built website
GPT-5.5 is very smart and the Codex app is easy to use. Task: GPT-5.5 is very smart and the Codex app is easy to use. We recommend you try it out. “Wowowow!” - Claire, excitedly talking about how smart OpenAI’s GPT-5.5 is after it built something awesome on the first try. (Approximately every day). We’ve both been big fans of Claude Code since late last year. But in the last month, we’ve come to love OpenAI’s latest model (GPT-5.5) and agentic app (Codex), both for business work and coding projects. Why do we like it? The biggest reason is simple: GPT-5.5 is very smart. It does detailed work. It needs less instruction. It catches more edge cases on the first pass. As a result, it feels easier to trust its results than Claude’s. Claire uses Codex on her personal projects and appreciates how much it can accomplish with relatively little guidance. On a recent walk, she decided to have Codex build a custom vacation planning website for an upcoming trip. Codex researched hotel availability, mapped options onto Google maps, and deployed to the web, all prompted using remote control on Claire’s phone. She’s also used it to rebuild her AI podcast, make her Peloton dashboard, and work on a rebuild of the Recalc website (coming soon). Katie uses Codex primarily for business work and has found it returns more thorough results. She had both Claude and Codex do deep dives on what emails she’d missed responding to over the past month. Codex returned a complete list and helpfully classified the emails. Claude missed many threads it should have surfaced and needed meaningful additional prompting. We also really like the Codex app. It makes it easy to see everything (conversations, files, rendered markdown and HTML) in one place, which means less flipping between different windows. And because the app works well, business users don’t need to invest in learning the terminal - you can get the best product experience right from the app. So should you try Codex? We think so! If you’re already a Claude Code or Cowork user, it’s a good opportunity to improve your setup to make it seamless to switch back-and-forth between products as needed. If you’re just getting started with agentic AI, Codex makes it incredibly easy. Of course, like all AI, it still has its frustrating moments. And we still gravitate to Claude for design and writing work. But we’ve both had enough “wow, that just worked!” moments with Codex that we think you’ll like it. Download and install the app at https://chatgpt.com/codex/ Download and install the app at https://chatgpt.com/codex/ Log in with your ChatGPT account. On an individual account, you can start for free, although you’ll likely want to upgrade for more usage. Log in with your ChatGPT account. On an individual account, you can start for free, although you’ll likely want to upgrade for more usage. Connect Codex to your other systems. Navigate to “Plugins” in the left panel. Then click the “+” on any system you want to connect to Codex. Click through to authenticate. We primarily use the Gmail, Google Calendar, Google Drive and Slack plugins. There are fewer connectors available natively than in Claude, although we expect more to be added soon. If you have any trouble with authenticating, visit chatgpt.com > Apps > authenticate to the same apps there. Connect Codex to your other systems. Navigate to “Plugins” in the left panel. Then click the “+” on any system you want to connect to Codex. Click through to authenticate. We primarily use the Gmail, Google Calendar, Google Drive and Slack plugins. There are fewer connectors available natively than in Claude, although we expect more to be added soon. If you have any trouble with authenticating, visit chatgpt.com > Apps > authenticate to the same apps there. Begin chatting with Codex! Not sure where to start? Have it help you clear your inbox, analyze data, research a decision, or build a dashboard for your team. Begin chatting with Codex! Not sure where to start? Have it help you clear your inbox, analyze data, research a decision, or build a dashboard for your team. If you’re a Claude Code or Cowork user, you’ll want to port your Claude.md and Skills over to Codex. Codex may ask you if it should migrate these. You can click “Yes” (it won’t affect your Claude setup), but you’ll likely need to have Codex do a bit more work to get everything set up well. More on that towards the end of this post.; tools: Codex. Human role: The original post does not say how a person stayed involved.; limitations: Prerequisites include a ChatGPT account, the Codex app, and authenticated plugins for Gmail, Google Calendar, Drive, and Slack. Remote control is currently Mac-only. The source notes fewer native connectors than competitors and a rocky re-authentication experience. Proposed advice: Manually verify all agent-generated data and website content before publishing, as the source disclaims accuracy and outcomes..
Tools
Published on Agent Work Atlas:
Overview
GPT-5.5 is very smart and the Codex app is easy to use.
Workflow
GPT-5.5 is very smart and the Codex app is easy to use. We recommend you try it out. “Wowowow!” - Claire, excitedly talking about how smart OpenAI’s GPT-5.5 is after it built something awesome on the first try. (Approximately every day). We’ve both been big fans of Claude Code since late last year. But in the last month, we’ve come to love OpenAI’s latest model (GPT-5.5) and agentic app (Codex), both for business work and coding projects. Why do we like it? The biggest reason is simple: GPT-5.5 is very smart. It does detailed work. It needs less instruction. It catches more edge cases on the first pass. As a result, it feels easier to trust its results than Claude’s. Claire uses Codex on her personal projects and appreciates how much it can accomplish with relatively little guidance. On a recent walk, she decided to have Codex build a custom vacation planning website for an upcoming trip. Codex researched hotel availability, mapped options onto Google maps, and deployed to the web, all prompted using remote control on Claire’s phone. She’s also used it to rebuild her AI podcast, make her Peloton dashboard, and work on a rebuild of the Recalc website (coming soon). Katie uses Codex primarily for business work and has found it returns more thorough results. She had both Claude and Codex do deep dives on what emails she’d missed responding to over the past month. Codex returned a complete list and helpfully classified the emails. Claude missed many threads it should have surfaced and needed meaningful additional prompting. We also really like the Codex app. It makes it easy to see everything (conversations, files, rendered markdown and HTML) in one place, which means less flipping between different windows. And because the app works well, business users don’t need to invest in learning the terminal - you can get the best product experience right from the app. So should you try Codex? We think so! If you’re already a Claude Code or Cowork user, it’s a good opportunity to improve your setup to make it seamless to switch back-and-forth between products as needed. If you’re just getting started with agentic AI, Codex makes it incredibly easy. Of course, like all AI, it still has its frustrating moments. And we still gravitate to Claude for design and writing work. But we’ve both had enough “wow, that just worked!” moments with Codex that we think you’ll like it. Download and install the app at https://chatgpt.com/codex/ Download and install the app at https://chatgpt.com/codex/ Log in with your ChatGPT account. On an individual account, you can start for free, although you’ll likely want to upgrade for more usage. Log in with your ChatGPT account. On an individual account, you can start for free, although you’ll likely want to upgrade for more usage. Connect Codex to your other systems. Navigate to “Plugins” in the left panel. Then click the “+” on any system you want to connect to Codex. Click through to authenticate. We primarily use the Gmail, Google Calendar, Google Drive and Slack plugins. There are fewer connectors available natively than in Claude, although we expect more to be added soon. If you have any trouble with authenticating, visit chatgpt.com > Apps > authenticate to the same apps there. Connect Codex to your other systems. Navigate to “Plugins” in the left panel. Then click the “+” on any system you want to connect to Codex. Click through to authenticate. We primarily use the Gmail, Google Calendar, Google Drive and Slack plugins. There are fewer connectors available natively than in Claude, although we expect more to be added soon. If you have any trouble with authenticating, visit chatgpt.com > Apps > authenticate to the same apps there. Begin chatting with Codex! Not sure where to start? Have it help you clear your inbox, analyze data, research a decision, or build a dashboard for your team. Begin chatting with Codex! Not sure where to start? Have it help you clear your inbox, analyze data, research a decision, or build a dashboard for your team. If you’re a Claude Code or Cowork user, you’ll want to port your Claude.md and Skills over to Codex. Codex may ask you if it should migrate these. You can click “Yes” (it won’t affect your Claude setup), but you’ll likely need to have Codex do a bit more work to get everything set up well. More on that towards the end of this post.
Reported result
The source reports subjective success: the agent completed the website build on the first try with minimal guidance, and in a separate email triage task, it returned a complete, classified list where another model missed threads. No quantitative metrics, error rates, or time savings are provided. Acceptance check: Verify the deployed site correctly displays mapped hotel options and that the email classification list matches a manual audit of the inbox.
Human role
The original post does not say how a person stayed involved.
Limitations
Prerequisites include a ChatGPT account, the Codex app, and authenticated plugins for Gmail, Google Calendar, Drive, and Slack. Remote control is currently Mac-only. The source notes fewer native connectors than competitors and a rocky re-authentication experience. Proposed advice: Manually verify all agent-generated data and website content before publishing, as the source disclaims accuracy and outcomes.
Try it
Act as my vacation planning assistant using OpenAI Codex. My trip details are: [replaceable inputs: destination, dates, budget, hotel preferences]. Step 1: Research available hotels matching my criteria. Step 2: Map these options onto Google Maps. Step 3: Build a simple, custom vacation planning website displaying these options and maps. Step 4: Deploy the website. Before deploying, show me a preview of the site and the underlying hotel data for my approval. Do not publish or spend money without my explicit confirmation. If you cannot access Google Maps or deployment tools, ask me for the necessary plugin connections or provide the code for manual deployment. Measure success by checking if the deployed site accurately reflects my preferences and if the hotel data is current.
Source reports are not independently verified. Publication date is the catalog publication date, not the original article date.