You Can Now Code Inside ChatGPT — OpenAI’s Codex Is Changing Everything

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Hey everyone,

Back in 2022 when everything related to AI started

It was all about ChatGPT

In 2023 it was all about AI images

In 2024 it was all about AI videos

and Yes this year 2025 it’s all about “Vibe Coding”

or

How AI is going to replace developers

This is what the trend is and OpenAI capitalized on that

By bringing Codex, OpenAI company's most capable AI coding agent

and that’s what we are going to talk about in today’s spotlight

What’s inside today’s newsletter:

• 🌐 Tech Pulse

• 🛠️ Build of the Day: How I use LLMs (Andrej Karpathy)

• 🔐 Prompt Vault: Competitor Intel in 30 Seconds

• 🔧 New Tools on the Block

• 🔎 Spotlight: You Can Now Code Inside ChatGPT — OpenAI’s Codex Is Changing Everything

• ✅ To-dos

🌐 Tech Pulse

• OpenAI's Planned Data Center in Abu Dhabi Would Be Bigger Than Monaco

  OpenAI is set to develop a massive 5-gigawatt data center campus in Abu Dhabi, spanning 10 square miles and requiring power equivalent to five nuclear reactors. The facility would dwarf any existing AI infrastructure announced by OpenAI or competitors.

• AI Video Startup Moonvalley Lands $53M According to Filing

  Moonvalley, a Los Angeles-based startup developing AI tools for video creation, has raised an additional $10 million, bringing its total funding to $53 million according to an SEC filing. The company aims to differentiate itself through its training data and safeguards in its video creation tools.

• AI Startup Cohere Acquires Ottogrid, a Platform for Conducting Market Research

  Cohere has acquired Vancouver-based Ottogrid, which develops enterprise tools for automating certain types of market research, expanding Cohere's capabilities in the enterprise AI space.

• VUZ Gets $12M to Scale Immersive Video Experiences Across Markets

  VUZ, a startup known for offering immersive video experiences from red carpets and sports stadiums, has secured $12 million in funding led by the International Finance Corporation to expand its operations.

• Apple is Trying to Get 'LLM Siri' Back on Track After Intelligence Initiative Stumbles

  Apple is working to salvage its AI assistant by improving data synthesis methods and potentially allowing the LLM version of Siri to access the web for information gathering. The company has reportedly approached Perplexity for potential AI search partnerships within Safari.

• 'Fortnite' Players Are Already Making AI Darth Vader Swear

  Players of the popular game Fortnite have discovered ways to manipulate the game's AI characters, particularly Darth Vader, into providing inappropriate responses, highlighting ongoing challenges in AI content moderation.

• Coinbase Will Reimburse Customers Up to $400 Million After Data Breach

  Following a significant data breach, cryptocurrency exchange Coinbase has announced it will reimburse affected customers up to $400 million in total. This announcement comes alongside news of indictments related to a separate $263 million crypto heist.
  *sponsored

🛠️Build of the Day

Idea: How I use LLMs (Andrej Karpathy)
Stack: ChatGPT, Internet search, Deep search, Cursor, NotebookLLM
Why build it: The example-driven, practical walkthrough of Large Language Models and their growing list of related features, as a new entry to my general audience series on LLMs. In this more practical followup, I take you through the many ways I use LLMs in my own life.
*sponsored

🔐 Prompt Vault

This week’s AI shortcut to save time or spark action.

🧠 Prompt Name: Competitor Intel in 30 Seconds
Instantly analyze a competitor’s strengths, weaknesses, and differentiation.

📋 Prompt:

💡 Why it’s useful:
Instead of spending hours researching, founders can use this prompt to get a fast, strategic overview of any competitor — perfect for sharpening their pitch, product, or market approach.

💼 From our Partners

🔧 New Tools on the Block

1. Appwrite Sites: The open-source Vercel alternative.

2. BnbIcons: Create and animate Airbnb-like isometric icons with AI.

3. Tabs Magic: A visual workspace for your browser tabs.

4. Ollama v0.7: Run leading vision models locally with the new engine.

5. Bolna: Voice AI agents platform for high volume recruitment & ATS.

Want to sponsor your tool in our newsletter? CLICK HERE
*sponsored

🔎 Spotlight: OpenAI launches Codex, an AI coding agent, in ChatGPT

Okay yes, another AI coding agent.

And I’m waiting for another tech company CEO to say that

“AI is replacing developers of my company”

Just to find out that all these companies career page still post require software developers. (duh…)

So because of vibe coding and AI code writers trend is going through the roof we have another one now

from Open AI and it’s called Codex… (I think they are very bad in naming their products)

OpenAI Codex, a new AI coding agent designed to assist software engineers by performing tasks like writing and debugging code.

Powered by an optimized AI model called codex-1, they claim that it aims to produce cleaner code and can even run tests iteratively.

What is really interesting here is every other AI code agent companies like cursor claims the same

but it’s OpenAI so I can accept it why they want a piece of pie here

What caught my attention first was the sheer ambition: 

• The technology itself: Codex is described as OpenAI's "most capable AI coding agent yet", powered by a version of their o3 model specifically optimized for software engineering tasks. It runs in a sandboxed virtual computer and can integrate with GitHub repositories.

• The market context: OpenAI is launching Codex into a rapidly growing space where AI coding tools are becoming increasingly popular, with major tech companies claiming AI writes a significant portion of their code. I personally I think everyone saying AI is replacing developers is not true at all. The potential acquisition of another AI coding platform for $3 billion also underscores OpenAI's aggressive play in this market.

• The product strategy: Integrating Codex into ChatGPT Pro, Enterprise, and Team subscriptions, with plans for wider access, shows the ambition to make AI coding capabilities a core part of their platform, alongside other specialized agents like Sora, Deep Research, and Operator.

I’m going to test it and will make tutorial to see is his useful or not

But till then I will say….

I think it’s just another AI coding platform, which is going to make mistakes and that’s where developers will come in to help.

Nothing new just companies trying to capture market share of AI coding

And this time it’s Open AI

Source: TechCrunch

 😂 Builder Memes

✅ Call to Build

Try this today:

“Can you build barcode generator using cursor in 1 hour?”

Tag us if you do.

If you like today’s issue, consider subscribing to us.

That’s a wrap! Catch you in tomorrow’s edition. 👋

—Harman

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