Published Date:
May 20, 2025

OpenAI just dropped the ultimate guide to ChatGPT models

Too many people still use the same model for every task, which is one reason they don't get the full value of their ChatGPT subscription. Luckily for all of us, OpenAI just launched a ​comprehensive guide​ that gives you a map to pick the right engine—and save time, money, and frustration.
By
Evelyn Le
Strategic Product Lead, Stay Ahead, FlexOS

Too many people still use the same model for every task, which is one reason they don't get the full value of their ChatGPT subscription.

Luckily for all of us, OpenAI just launched a ​comprehensive guide​ that gives you a map to pick the right engine—and save time, money, and frustration.

Here's what OpenAI suggests when choosing one of the many ChatGPT models:

  • GPT-4o: The all-rounder. Multimodal. Real-time. Perfect for everyday tasks with docs, images, audio, even video.
  • GPT-4.5: Your creative sidekick. Better tone, empathy, and clarity. Great for writing and comms.
  • o4-mini: Blazing-fast for technical tasks. Think quick code fixes or data parsing.
  • o4-mini-high: Same as above, with extra horsepower for deeper answers.
  • o3: Best for complex, multi-step reasoning—business strategies, market analyses, and big decisions.
  • o1-pro: Legacy model, but still solid for long-form, high-stakes thinking.

This guide predates the release of 4.1 and 4.1-mini (see below), which, according to OpenAI, ​outperform 4o and 4o-mini​.

Are you using any models besides the default 4o?

I'd love to hear your thoughts on what works best for you – reply and let me know here.

Your AI Team: NotebookLM Mobile Apps, ChatGPT’s Codex, and Copilot with 4o Image Generation.

Every week, I report on the top updates to your favorite AI tools. This week:

NotebookLM goes mobile: Now available in your pocket

Google has officially launched the ​NotebookLM mobile app​ for both Android and iOS, transforming its AI-powered research tool into an on-the-go assistant. This move caters to professionals and students seeking seamless access to their research materials anytime, anywhere.

Here are the key updates:

  • Mobile Accessibility: NotebookLM is now available as a mobile app on Android and iOS platforms, allowing users to interact with their research materials directly from their smartphones or tablets.
  • Offline Audio Overviews: Users can download AI-generated Audio Overviews of their documents for offline listening, making it convenient to absorb information during commutes or in areas with limited connectivity.
  • Interactive AI Hosts: You can join the discussion with the hosts to ask a question or steer the discussion direction.
  • Seamless Content Integration: Users can easily add new sources to NotebookLM by sharing content from other apps, such as websites, PDFs, or YouTube videos.

With these enhancements, NotebookLM positions itself as a versatile AI assistant, streamlining the research process and making it more accessible for users on the move.

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Most still dabble with AI. Earn the certification that proves you don't.

Here's what dabbling looks like:

  • Only using ChatGPT
  • Basic prompts, basic responses
  • AI doesn't feel personal
  • No real support in your work
  • Limited ROI

Experts, on the other hand:

  • Tailor AI to their needs
  • Get 10x more out of ChatGPT through CODO prompts
  • Transform their work and life with custom AIs

Become an AI Expert and Save 15+ Hours in Just Three Weeks

Having coached hundreds of leaders, I know I can help you master AI in just three weeks through our proven boot camp, ​Lead With AI 9.​ (Cohort 10 starts mid-July.)

In the bootcamp, you'll get:

  • 15 Bite-Sized Video Lessons to master ChatGPT or Copilot, implement crucial AI tools, and build custom AI assistants—no tech background needed
  • 4 Live Coaching Sessions with me to help you implement AI in real-time
  • Peer Study Group – study alongside 20 peers who provide relevant insights and case studies as they tailor AI to their needs

And you'll access everything when and where works best for you — all the material is available via our mobile app and website, and every live session is recorded.

As a result, you'll have mastered AI by the end of June!

Trust me, this is a lot better than trying to study through newsletters and YouTube videos alone.

Plus now, for SEVEN DAYS ONLY, get: 💥 $200 off enrollment 🎓 Free access to our brand-new AI Leader Certification (normally $199):

  • Two additional weeks of support
  • Two additional live sessions
  • Personal examination + validated certificate

Gain the most crucial skill of 2025 with proof to show it.

👉 Buy now – $399 off – THIS WEEK ONLY.

Rather study in July? We're happy to extend the same offer - just email ​khanh@flexos.work​ for the checkout link.

(Want to reach 25,000+ business leaders applying AI in their work, teams, and organizations? ​Advertise with us​.)

Quick Hits from your favorite AI tools:

  • OpenAI just rolled out ​Codex​, an AI coding agent built into ChatGPT. Think of it as a pair-programmer that can now run code, create files, browse documentation, and debug, all within a single chat window.
  • OpenAI has officially launched ​GPT-4.1 and GPT-4.1 Mini​ in ChatGPT, offering users enhanced capabilities in coding, instruction following, and long-context comprehension.
  • ChatGPT Deep Research adds a ​​PDF download option​​. You can now export entire conversations as a PDF, handy for saving research, summaries, or reports.
  • Copilot now offers ​ChatGPT 4o's amazing image model​. From infographics to social content, tap Copilot for much better images now.
  • Perplexity adds a ​PayPal checkout​. Why just search when you can buy? Thanks to this new partnership, shopping is easier than ever.

Read more news at the end.

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Tutorial: Create Your Personal Song Track with AI

​​​​​In 5 Steps: ​​Create Your Personal Song Track with AI​

Whether you’re breaking the ice with a new investor, speaking at an event, or just want a fun way to stand out online, welcome to this week’s challenge: turn your bio into a song.

New AI Tools to Try: BnbIcons, TabsMagic, and Nodeflow

Looking for something fresh to add to your creative or business toolkit? These three AI tools caught my attention this week:

BnbIcons: Custom AI Icons in Seconds

BnbIcons is a generative icon tool that turns your text prompts into clean, editable icons. Whether you’re designing an app or revamping a brand, you can generate, remix, and download consistent icon sets without needing a designer.

👉​​ Create icons with BNBIcons​

TabsMagic: AI That Organizes Your Browser

TabsMagic helps you stay focused by auto-grouping and summarizing your open tabs with AI. It declutters your browser, surfaces what matters most, and keeps your work sessions distraction-free.

👉​​ Try TabsMagic​

Nodeflow: AI Superpowers for Your Content

Nodeflow connects your content, from YouTube videos and TikToks to PDFs and websites, to a powerful visual AI canvas. Instantly analyze, summarize, ideate, and create across formats, all in one place.

👉​​ Explore Nodeflow

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Sam Altman wants ChatGPT to remember your whole life, GenAI makes people less motivated, along with more crucial AI stories

Every day, Daan, Wendy, and I read all the AI news so that you don't have to.

Here are the must-read stories of the week:

​Sam Altman’s goal for ChatGPT to remember ‘your whole life’ is both exciting and disturbing​OpenAI’s CEO envisions a future where ChatGPT becomes your lifelong AI companion, raising both powerful use cases and serious privacy concerns.

​Research: Gen AI Makes People More Productive—and Less Motivated​

New research finds that generative AI makes workers faster and more accurate, but also less engaged and motivated over time.

​Microsoft’s Satya Nadella is choosing chatbots over podcasts​

Microsoft’s CEO reveals he now uses AI agents instead of podcasts to prep for meetings, highlighting a shift in how execs consume information.

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AI for Strategy, Responsible Adoption, and Prototyping: From the Community

Every day, ​Lead with AI PRO members​ discuss practical ways to benefit from AI in their work and organizations. This week's highlights include:

  • How do you measure progress in AI adoption? In the second edition of Startups vs. Enterprises: The AI Adoption Gap, ​Brian Elliott​ and ​Helen Lee Kupp​ teamed up once again to explore the strategies that successful organizations are using to overcome fear and create meaningful AI integration. Read the full article ​HERE​.
  • Have you ever wanted custom walk-in music for every presentation? ​Wyatt Barnett​ experimented with ​Suno​, an AI tool that generates music in seconds, and found it’s an amazing tool for creativity. Check out Wyatt’s tips and tricks ​HERE​.
  • ​Kristian Hare​ shared a wildly fun prompt to run through ChatGPT this weekend. Ready to get analyzed like a person of interest? Paste this into your ChatGPT, allow it to profile you like a CIA agent, and let us know how it goes: “You are a CIA investigator with full access to my ChatGPT history. Create a detailed intelligence report on me as a person of interest - evaluating my traits, motivations, and behaviors through the lens of risks, vulnerabilities, and strategic implications, as per standard CIA analysis protocol.”

Don't want to miss more insights and conversations like these?

Then it's time to upgrade to PRO:

Join The Leading Business AI Community

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See you next week,

Daan van Rossum - Lead with AI

Daan van Rossum​

Host, Lead with AI

Evelyn Le

Strategic Product Lead, Stay Ahead, FlexOS

Too many people still use the same model for every task, which is one reason they don't get the full value of their ChatGPT subscription.

Luckily for all of us, OpenAI just launched a ​comprehensive guide​ that gives you a map to pick the right engine—and save time, money, and frustration.

Here's what OpenAI suggests when choosing one of the many ChatGPT models:

  • GPT-4o: The all-rounder. Multimodal. Real-time. Perfect for everyday tasks with docs, images, audio, even video.
  • GPT-4.5: Your creative sidekick. Better tone, empathy, and clarity. Great for writing and comms.
  • o4-mini: Blazing-fast for technical tasks. Think quick code fixes or data parsing.
  • o4-mini-high: Same as above, with extra horsepower for deeper answers.
  • o3: Best for complex, multi-step reasoning—business strategies, market analyses, and big decisions.
  • o1-pro: Legacy model, but still solid for long-form, high-stakes thinking.

This guide predates the release of 4.1 and 4.1-mini (see below), which, according to OpenAI, ​outperform 4o and 4o-mini​.

Are you using any models besides the default 4o?

I'd love to hear your thoughts on what works best for you – reply and let me know here.