OpenAI's new GPT-5-Codex arrives

PLUS: GEO is the new SEO and Nothing's $200M AI device bet

Author

Jelani Abdus-Salaam
September 16, 2025

In partnership with

Welcome back, AI’ers!

Here’s What’s On The Menu For Today

  • OpenAI supercharges its AI coder with GPT-5

  • Nothing's $200M bet on AI-native devices

  • Why GEO is the new SEO for AI chatbots

AI ON MY MIND

Happy Tuesday,

OpenAI has released a significant upgrade for its AI coding assistant, debuting the new GPT-5-powered Codex. The update offers developers next-generation performance for complex coding tasks and more flexible computing resources.

This release pushes the AI assistant beyond a simple tool, making it a more deeply integrated partner in the software development lifecycle. As AI automates more of the workflow, will this new level of integration fundamentally reshape how developers build and deploy software?

By the way, I've been getting questions about how AI works in practice, so I'm launching a separate newsletter that dives deeper into real business applications and practical advice. [Click here if you're interested].

-Jelani Fuel (Co-founder of Best of AI)

A MESSAGE FROM OUR PARTNER

How 433 Investors Unlocked 400X Return Potential

Institutional investors back startups to unlock outsized returns. Regular investors have to wait. But not anymore. Thanks to regulatory updates, some companies are doing things differently.

Take Revolut. In 2016, 433 regular people invested an average of $2,730. Today? They got a 400X buyout offer from the company, as Revolut’s valuation increased 89,900% in the same timeframe.

Founded by a former Zillow exec, Pacaso’s co-ownership tech reshapes the $1.3T vacation home market. They’ve earned $110M+ in gross profit to date, including 41% YoY growth in 2024 alone. They even reserved the Nasdaq ticker PCSO.

The same institutional investors behind Uber, Venmo, and eBay backed Pacaso. And you can join them. But not for long. Pacaso’s investment opportunity ends September 18.

Paid advertisement for Pacaso’s Regulation A offering. Read the offering circular at invest.pacaso.com. Reserving a ticker symbol is not a guarantee that the company will go public. Listing on the NASDAQ is subject to approvals.

TODAY’S TOP STORIES

OpenAI Supercharges Its AI Coder

The Recap: OpenAI has released GPT-5-Codex, a powerful upgrade to its AI coding assistant that offers developers enhanced capabilities and more flexible compute power.

Unpacked:

  • The new Codex is powered by OpenAI's next-generation GPT-5 model, significantly boosting its performance for complex coding tasks.

  • A new dynamic compute allocation feature allows developers to scale computing resources up or down based on the complexity of their tasks.

  • The assistant also features enhanced tool capabilities, enabling it to better integrate with and control other development software and APIs.

Bottom line: This upgrade makes AI a more integrated and powerful partner in the software development lifecycle. Developers can now automate more complex parts of their workflow, accelerating innovation from idea to deployment.

Nothing's $200M AI Device Bet

The Recap: London-based Nothing just secured $200 million to build a new line of "AI-native" devices. The hardware will be powered by a specialized AI operating system designed to deliver a hyper-personalized user experience, with the first products set to launch next year.

Unpacked:

  • Nothing's vision extends far beyond phones, aiming for its AI OS to power everything from smart glasses to electric vehicles and even humanoid robots.

  • The announcement marks a major pivot for CEO Carl Pei, who last year stated "AI is just a tool" and cautioned against calling their software an AI operating system.

  • Success is not guaranteed, as the company enters a challenging market and will compete directly with ventures like the screen-free device from Jony Ive and OpenAI.

Bottom line: Nothing is wagering that tight integration between hardware and a purpose-built AI OS is the future of personal tech. This strategy places the startup in a high-stakes competition to define the next generation of computing devices.

MY FAVORITE AI TOOLS

Relevance is my favorite AI tool right now (even more so than N8N).

Here’s why:

It’s an AI agent building tool that doesn’t require you to build out the logic using nodes. Instead, you use natural language to build out these agents. But the best thing imo is that you can build AI Agent teams.

Like agents talking to each other completing a goal until its done. It’s nuts. No other tool on the market is doing this. You have to check it out.

(Try it out →Link)

👾 AI Tools We Use Everyday

➡️ N8N for AI Agents - Literally use this everyday to write this newsletter (link)

➡️ Axiom AI - AI Browser automation to scrape anything on the web (link)

➡️ GummySearch - AI Reddit research (link)

Tools are sourced from our database and are not sponsored or affiliated.

THE LEARNING CENTER

The step-by-step way you can become a highly paid AI Consultant. Get in touch to learn more.

MORE NEWS

Meet GEO: The New SEO for AI

The Recap: A new discipline called Generative Engine Optimization (GEO) is emerging to help brands influence AI chatbot recommendations. It focuses on shaping your online narrative to ensure AI systems highlight your products and services favorably.

Unpacked:

  • Technical tweaks like unblocking AI crawlers and setting up Bing Webmaster Tools are quick wins, as many chatbots rely on Bing for search data.

  • Chatbots are surprisingly trusting of a company's own content, heavily using your "About" and mission pages to understand and describe your brand.

  • Your brand's presence on Wikipedia, YouTube, and Reddit is critical, as these are the most frequently cited sources chatbots use to form answers.

Bottom line: Getting your GEO strategy right today is vital because AI models form lasting impressions that can be difficult to alter. The work you put in also strengthens your brand's overall digital presence for human customers and traditional search engines.

OTHER NEWS YOU MAY LIKE

Varonis detailed the rise of 'SpamGPT,' a new generation of malicious AI tools capable of crafting highly convincing and personalized spam and phishing attacks at a massive scale.

Nature published a study showing AI-generated scientific forgeries, including fake data and images, are increasingly bypassing traditional peer review and getting published.

Intel released fastRAG, a new open-source library from its research labs designed to help developers build highly optimized and efficient Retrieval-Augmented Generation pipelines.

JOIN OUR BETA PROGRAM

🚀 Want to Make Money from AI?

We’re quietly launching a private beta program that trains a small group to become AI Implementers — People who help other founders install AI systems and get paid for it.

If you're interested in joining this early group…

👉 Reply with the word “implementer”

AI ON SOCIAL

 AI ART

Can You Spot The AI-Generated Image?

Click "Picture One", "Picture Two", "Both" or "None

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RANDOM PROMPT OF THE DAY

Copy and paste this prompt 👇

"I would like your help to create direct response style social media content for my ecommerce store.

But before we start creating this content together, first I’m going to give you a detailed overview of my products. This is so you can better understand how my products work, what problems they solve, and how they will help my marketing avatar.

1. My ecommerce store is a (describe your store... eg ""niche store selling beauty products"").
2. The name of my store is (name of your store).
3. My target market is (describe your target market... eg ""women 25-35"")
4. Our best selling product is (describe your #1 product).
5. Our best selling product is designed to help [your target audience] [achieve X/eliminate Y]
2. The main benefit of my best selling product is [enter it here]
3. The main problem my best selling product solves for my marketing avatar is [enter it here]
4. The main pain point my marketing avatar is experiencing is [enter it here]
5. The main thing that separates my best selling product apart from similar products in the market is [enter it here]
6. Some of the main features of my best selling product are [enter it here]

For now, I don't want you to create the marketing content. I just want you to understand what my product is. If you understand, just reply with understood.”

Want more prompts?

We have a database of over 8,000 of the best prompts we’ve collected, which you can access by sharing Best of AI using the link below.

THAT’S IT FOR TODAY

Until next time, stay safe.

-Best of AI Team

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