👕 Can Your T-Shirt Count Your Sit-Ups?

In today’s email:

👕 A smart T-shirt that tracks your workouts without making you look like Iron Man? Yep, it’s real—and it counts your reps, too.

📄 OpenAI just dropped a PDF export feature that turns AI reports into professional-grade documents—with citations, formatting, and shareability baked in.

🧠 One journalist tested every major AI assistant so you don’t have to—and the results range from genius to “please unsubscribe.”

Curious? Let’s dive in!

🏋️ Smart T-Shirt Tracks Your Workouts

A group of researchers at Cornell University created a smart T-shirt that tracks your exercise and posture without making you look like a robot or suffocating you in a tight fit. They call it SeamFit, and it’s comfy, washable, and doesn’t require bulky sensors.

Here’s the cool stuff:

• SeamFit uses conductive threads sewn into the shirt’s seams to detect body movements.

• It tracks exercises like lunges and sit-ups with up to 89% accuracy and can even count your reps (off by less than one on average).

• The shirt sends data to a computer via Bluetooth, where an AI model figures out which exercise you’re doing and how many reps you’ve completed.

• It’s machine washable (remove the detachable circuit board first!), and even after a few washes, it still works pretty well.

• The shirt’s sensors, which collect data on human movements, also have potential uses in robotics and human-computer interactions.

Soon, you could be wearing a smart T-shirt to track your workouts just like any regular old cotton tee.

📁 OpenAI Adds PDF Export

OpenAI just made your life much easier with a nifty new feature: PDF export for Deep Research reports. This means you can now download in-depth research reports with all the bells and whistles—tables, images, clickable citations, and proper formatting—just like a polished professional document. No more fiddling around with copying and pasting.

Here’s what’s happening:

• Enterprise Focus: OpenAI’s shifting gears to focus on the enterprise market, making sure their AI tools fit seamlessly into business workflows.

• PDF Export: Now, you can export reports as PDFs for easy sharing with colleagues and clients. It's a game-changer for those who need polished, verifiable documents.

• Citations: The clickable citations ensure the research is credible, which is crucial for industries like finance or law.

Key points:

• Seamless integration into existing workflows. No need to adapt to new formats or systems.

• Verifiable sources—essential for business use, especially when it comes to compliance.

• Improved shareability—because AI research is only valuable if it can be shared with decision-makers.

OpenAI’s PDF export might seem small, but it’s actually a big deal for business adoption. Sometimes, it’s the little features that make the biggest difference.

💭 Which AI Is Actually Worth It?

Do you wanna know which AI is worth your time and which one’s just blowing digital smoke? Kelsey Piper from Vox.com turned her life into a sci-fi movie and went on a grand tour of all the hottest AI assistants — so you don’t have to. Some are brilliant, and others are not so much.

Kelsey tried everything — Claude 3.7, ChatGPT 4o, Gemini 2.5, Grok 3, and even a shopping-savvy Chinese AI named Manus. She’s got subscriptions coming out of her ears, and she canceled Midjourney, which is like breaking up with a moody artist who still paints better than you.

Here’s the scoop:

• 🖼 Best for images: ChatGPT-4o — it turned a meh family photo into a Norman Rockwell-style gem on the first try.

• 📸 Prompting tip: Be polite, challenge the AI, and weirdly enough... ask it to try harder. Seriously.

• ✍️ Best for fiction: Gemini 2.5 if you’re broke, GPT-4.5 if you’re bougie.

• 🧠 Best for creepy internet sleuthing: Grok 3 used to read entire Twitter profiles. Now it barely remembers breakfast.

Kelsey’s ultimate takeaway? AI can be magical — if you treat it like a moody genius. And always, always have a prompt strategy.

Other cool AI stuff that is trending right now 🔥🔥

🚨 AI experts are sounding the alarm with a nuclear-era throwback, urging companies to run the numbers before unleashing super-intelligent systems that could make humanity the sidekick in its own story. - Read more

👎 Klarna's bringing back humans after going AI-crazy, and Duolingo's getting roasted online for its own "AI-first" move—it looks like the future of work isn't as simple as just replacing people with robots. - Read more

🛑 Trump fired the head of the Copyright Office, Shira Perlmutter, right after she refused to let tech giants like Elon Musk off the hook for using copyrighted works to train AI. - Read more

🧠 Turns out your brain still beats AI when it comes to figuring out who’s chatting, who’s crossing the street, and who’s just awkwardly standing there—so maybe don’t trust your self-driving car to read the room just yet. - Read more

🎧 Spotify’s AI DJ just got chatty—now you can boss it around with voice commands and finally stop pretending it knows your vibe better than you do. - Read more