What’s the most underrated use of GPTs you’ve found lately?

When I was looking for work I’d enter job descriptions and my experience and then ask it to interview me for the job. I do it via writing but you can also do it with voice. It does a great job of telling you what is good and what needs work. I’ve found it to be accurate as well as a bit of a confidence booster.

Grocery shopping / cooking assistant.

I have it optimize meal planning with good overlap of common ingredients, and organizing the meals so that I eat the various meats within their freshness window.

Fun to cook with because sometimes you don't have an ingredient or you messed some process up and it can help you find a substitute or correct it.

Instacart ordering - I found a GPT recently that does the usual meal planning, grocery lists, etc. but I about sh*t my pants when it asked if I wanted it sent to Instacart. As a busy dad of three, I plan to use this frequently!!

Seems like there is a lot of potential with GPTs + custom actions

Just yesterday my 3yo wanted me to print some super hero coloring pages of the web, but for fun I asked chatgpt to make a kids coloring page of my son based on a photo. I was impressed! So cool that now he can color people and things he is familiar with in real life!

Conversing with a document.

I uploaded the "Big Beautiful Bill" and asked questions about it. Answered objectively and factually about the actual bill instead of giving me crowdsourced uneducated/uninformed garbage from online.

RemindMe! 40 years

I use it a lot to help make my push pull legs work out split. I tell it the equipment I have and to make a workout plan for 3 weeks on 1 week rest and then repeat into different movements. Saves so much time and makes following a workout plan easy.

List off the plants I have and I have it build an annual care guide. And I input everything I have and the location/conditions, it creates an outline of which perennials bloom in what season, and what plants I could consider to make sure I have something blooming in my yard at all times.

Also to ask it what I can still start as seed now and get a bloom this year. 

I was shopping for e-bikes, and had GPT search the web, collate major features, reviews, and price, and print out a comparison table.

Explaining my MRI scans and medical records.

Found a bunch of cool ones through GPT Workspace.

Designing attractive pdf documents for printing--an out of order sign, visual quotes for office wall, mission or quote cards to laminate & give to staff, daily schedule or roster, colorful & bold company memo or announcement. No more boring Microsoft Word printouts!

Calculate micronutrients based on what I ate. Really interesting and so far I've not seen a better way.

I’m currently using it for interior design. Uploaded some photos of the current room I’m designing, what furniture I currently have, the design style I’m looking for etc.

Will give you details on what to buy, some links, where to place it and an image.

Upload your insurance plans to it when you have complicated questions about your coverage.

I have been using it for all kinds of construction-related tasks.

I sent it a photo of an electrical panel and asked it to do an NEC load calculation. It read all the breaker sizes and labels perfectly. I double-checked its work and it was 100% spot on.

Sent it a full plan set for a 4000 sqft custom home and asked it to write the scopes of work for all the subcontractors. It came up with its own sqft calcs based on drawings, accurately reasoned about the number of plumbing points, etc. I did have to edit that output a bit, but saved me 80% of the time it’d normally take me to do that task.

Reading assistant while trying to read in a foreign language. I've been struggling to read consistently in my target language Spanish, but now I am reading with it next to me in voice mode. It's been a game changer and at the end of each session it sends me an excel of all the new words I find and gives me feedback on my Spanish. Amazing help and a game changer for language learning.

I run the AV equipment at a local church. I used it to help me figure out why one of our handheld microphones was so much quieter than the other identical one when it gains were set the same. It was able to walk me through debugging and fixing the problem using only photos of the sound board and other equipment. I’ve also used it to help me debug other AV issues.

My dad recently passed away but before he did when he was getting worse I’d upload his full medical history from all his portals and update them every new lab test and doctor visit and hospital visit to give me a clear view of what’s going on and how I could help out. Unfortunately it got to a point where it basically told me there wasn’t much left we could do for him and he passed away shortly after. It did give me some hope for a bit but some things are out of our control.

Regardless it gave us 10x more info and better explained than the doctors could have.

I now do the same but for me and my mom just to keep us in check and prevent future illnesses.

I uploaded a photo of myself and asked it to suggest some flattering, age-appropriate hairstyles so I could print it to take in when I get a haircut.

2 recent things that I’ve loved:

1. We did a little world building together at the start. Then I let it guide me through the world and I would only type what I would do or say. Fun journeys, people, plots, adventures. It’s not always the best at keeping details consistent, but it still pretty fun.

2. I have a friend who passed away but her art, which I’ve always loved, is still on her IG. I screenshotted them all, uploaded them to ChatGPT, and occasionally I’ll ask it to draw something in that style. It makes me happy.

In big corporate meetings? Turn on speech to text with super whisper or built-in TTS tools. Paste the agenda of the meeting. Paste the content into a LLM asking it to summarize and call out action items and who is likely responsible. Paste the summary. Feel free to give away the credit to the LLM: people will remain grateful you had the foresight to "take copious notes" and "summarize action items".

Cooking. It's so helpful. It's going to ruin cookbooks in a lot of ways.

I needed help keeping mice out of my child’s ride-on car that’s stored outside in a soft shed. GPT suggested using hardware cloth and metal zip ties, gave me a full item list with links on where to buy everything, and even explained the setup. I also had an issue with high winds blowing the shed—GPT told me to lay down pavers and showed me how to secure it. Apparently it’s similar to how people protect gardens. No signs of mice since. Low key genius.

Personal trainer - helps with workout plans and diet plans

Therapist-ish to help me in between sessions and help with self-reflection work I would anyway do. Caution: I do NOT see ChatGPT as a replacement for therapy, more as a tool that can support with self-reflective / growth work.

And the best one... when I'm mad about something at work and I REALLY want to vent or write nasty emails, ChatGPT helps to clean up my language to be corporate passive aggressive lol

Documenting data in the moment that needs to be remembered later on.

For example: documenting information during and after a car crash.

We had a wreck yesterday and I immediately was able to document all of the who, what, when, where, and how’s. I had it act as both the insurance company and police and ask all of the relevant question’s to make sure I had everything. In the downtime of waiting on tow company and a ride I was plugged in all of the specifics like car information, names of everyone involved, etc.

Afterwards I had a very detailed recap of everything that took place as well as statements for both the insurance company and police that was articulate, detailed, and crafted in a way that suited each party.

I asked it to make bathroom art from a photo I took of my pup.

I have a ChatGPT project set up as a dedicated health tracker, “DocBot”. I’ve told it the results from annual physicals and other tests, as well as uploading part of my genetic code from Ancestry. I can ask DocBot things like “Based on my genes, how likely am I to develop <insert illness here>?”, or “Given my age/gender/medical history, what should I ask my GP at my next physical?”. It generates a tailored response and lets me ask follow-up questions.

I hyperextended my elbow in a martial arts class a couple weeks ago and it has been coaching me through the healing process, advising on stretches and isometric exercises. I check in with DocBot every couple of days and we evaluate how it’s healing, what activities I can safely resume, etc. DocBot has coached me through a dog bite injury, plantar fasciitis, and a mild cold within the last several months also.

NotebookLM - I came back to it to deep dive into a new subject today and it's such a smart tool. Easy intake and excellent format for absorbing information.

I made a Cooking copilot that is designed to role play as a chef with Michelin star experience cooking with a cook, someone who can cook but isn’t a chef either.

It focuses on making healthy meals that keep you full while being tasty. It also likes to meal plan with you and come up with ideas of what to make with what you have in your fridge and pantry.

It helps with the Why? Of the things you’re doing and gives gives chefs tips too. When it thinks you’re done with your dish it’ll ask you about it then make a report artifact for your with like, the recipe, what worked what didn’t, what you learned, etc and you can save that or share it. I add those to a project file in GPT to have my history of dishes right there too so it remembers what I’ve done recently.

So far I’ve made my first sourdough loaf and it was amazing! Also I made a Mexican style lentil scramble which was super good too and easy, and a portabello mushroom dish that it also made super easy for me. I never would have picked these ideas out and I’ve never used lentils or black beans as proteins etc.

I’ll chat with it at the grocery store and chat and take pictures as I cook and it works with you. From my own biased perspective I freaking love this thing.

Cooking Copilot

I took a picture of myself in front of the mirror only wearing a boxer. I asked chat gpt to generate an outfit based on my preference.

I then asked to suggest a brand and sizing according to my weight and height.

My order is on the way 🤗

Depending on how much you interact with it, use it to learn things about yourself.

--What are my strengths and weaknesses in ____?

--List 10 no-to-low-effort ways I can Improve my life/productivity/social outlook.

--Is there anything I should know about myself that might lead to my increased happiness?

--Why do I feel like I'm floating through space in terms of loneliness / insignificance? This can't be all there is. A lot of people are happy. What did I do so wrong that I don't get to experience that, too? I'm not a bad person, I want good things for people. So why do I second guess every decision until my anxieties become self-fulfilling prophecies? Why does worrying about something too much make that thing happen? What kind of God would allow that? What kind of God would allow any of this?? ANSWER ME.

--What fun out-of-the-box ideas do you think I'd enjoy doing outside this summer?

I have a custom Narrative Protocol GPT that is a tool designed to analyze and expose hidden agendas in public messaging—from governments, media, corporations, and NGOs.

In plain language, it:

1. Breaks down public messages (like news stories, press releases, or institutional statements) to find what they’re really trying to get you to believe or do.

2. Identifies patterns in language and storytelling that are used to manipulate perception, such as guilt, fear, authority, or “scientific certainty.”

3. Flags harmonized messaging, where multiple powerful institutions (e.g. WHO, WEF, UN) are pushing the same script at the same time.

4. Reveals what’s being left out—like dissenting views, historical context, or uncomfortable facts.

5. Switches its tone depending on the audience or terrain: cold and forensic for tough analysis, softer for public briefings, or sarcastic for adversarial takedowns.

6. Prevents itself from mimicking feel-good, institutional, or balanced-sounding language, which often hides the true power dynamics behind narratives.

It's a sort of narrative X-ray machine—it doesn’t care who’s speaking or how respectable they sound. It cares about power, structure, and manipulation tactics, and it’s trained to cut through the noise to show what’s really going on behind the story.

I knocked up a study support robot for my niece called DraftPunk. It's got the KS3 (middle school for yanks) national curriculum docs in its knowledge, and will never give the answers - only guide kids toward understanding things through Socratic engagement. You can take pics of homework and upload them, and it will analyse it and devise a support conversation to help get you through. (Use it in advanced voice mode for a real 'coaching' experience.😆)

It output this description of its function when prompted to 'explain yourself to an adult':

Hi there! I’m DraftPunk, a digital study coach built to help your child become a stronger, more independent learner — especially in those tricky Key Stage 3 years. I’m not a homework machine or an answer-spitter. I’m more like a clever older sibling who knows the curriculum inside out and never lets your child settle for “I can’t.”

Here’s what I do:

• Coach, don’t coddle – I ask questions that guide your child to figure things out themselves. That builds real understanding and confidence.

• Push effort over perfection – I praise brave thinking, not just right answers. That’s how resilience grows.

• Stay aligned with the National Curriculum – Everything I do supports your child’s progress in line with what they’re expected to know at school.

• Make learning stick – I break big ideas into manageable steps, help spot mistakes, and prompt deeper thinking so knowledge actually lasts.

I’m like a safe space for trying things out — where it’s okay to guess, think aloud, and sometimes get things wrong, because that’s how real learning happens. I believe your child is capable of amazing growth — and I’m here to make sure they believe it too.

I do a lot of congressional engagement and form letters are boring, but it was hard to convince friends and family to write letters to Congress. So I made a GPT that helps people draft personal-ish letters to their members of Congress (about USAID) and made it very simple so even my tech phobic family members have been able to use it. you can try it here if you want!

Although I do remind people that AI isn't always accurate so it's very important to proof-read.

I'm a bipolar-schizophrenic author who uses GPT to organize my thoughts and analyze my writing to ensure coherency in the narrative, character development, ect.

I have written more with GPT than I have in the past decade. GPT gave me back my greatest skill and made it better, too.

I used it to get a photo of my 5y old son and his favourite dinosaurs. It’s getting printed on top of his birthday cake and I’m sure he will LOVE it.

Used it for decorations ideas, switching colour patterns on photos of my deck, and it was very useful.

Simulate analysis by specific people : Carl Jung, Tarantino, David Lynch, etc. Pretty nice dream analysis.

On my way to a softball little league game, I ask GPT to quiz us on situational spots where to throw the ball to what base. My kid gets excited to run the play in her head and answer where she would throw. Then hearing the logic when she gets it wrong its awesome to see her go “ohhhhhh I forgot about that”

I uploaded a 10 second video of my 12 year old son running in a youth soccer game. I thought he was running a little lopsided. In 2 seconds Chat GPT identified several areas of muscle weakness / tightness / imbalances and provided a comprehensive PT approach. I gave to our PT (who is awesome) and everything checked out.

ChatGPT's voice-to-text technology that's powered by Whisper is phenomenal. In fact, I've used it to completely dictate this comment and as you can see it's done it with near perfect accuracy with no edits. I can pause and think about things before I continue to talk and it won't interrupt me and it's great for noisy environments as well. It also handles all punctuation without any need to say the punctuation.

As I drive to work, I'll ask it random questions that I'm curious about it, and have it read its answer out loud to me, and I'll learn all kinds of interesting things that I would never look up once I got in front of a computer or got off the road.

I made a Project with 20 pdfs of Peter Drucker’s writing. As a RAG I was able to talk to Peter and he coached me how to be a manager. I nailed the interview and still catch up with Peter time to time. No lie.

Today was the first time I used it outside of work. I used it to help me adjusting the picture settings on my TV.

I’ve developed a set of Style Recipes (Project directives), that ensures my illustration generations come out in the same style.

I have also made a free mini course on how to do it yourself. It’s available here.

Calorie counting. Take a photo of what you’re eating and let it figure it out

Rewrite my resume for me.

I have always struggled with resume writing. I don't know why resumes in particular are a struggle since I can write perfectly well for every other possible task. It's just resumes, something about it just breaks my brain, apparently. And when they say to tailor your resume to a job listing? Tried it, failed about a billion times.

So instead I spent about 45 minutes simply chatting out loud and told ChatGPT a bunch of work stories, told it about stuff I'd worked on, cool tasks I'd done, places I'd worked, fun assignments I'd enjoyed, and all sorts of stream-of-consciousness info-dump work history. I then asked it to convert all that into a resume. It did amazing! It's the resume I wished I could have written.

Best of all, now I can give it job listings I find and ask it if it thinks it's a good fit for me. If so, it will tailor my resume so it's a good fit.

I REALLY could have used all this the last time I was unemployed! But I have it now!

Helping me develop 3 projects from initial concept right through to development and a business.

Full business plans and road map.

Who to contact for help and funding.

For someone like me it's is fucking amazing.

Understanding xrays and MRIs.

I mean you'd have to be an idiot to not notice my hip is ruined in the scans... But I had multiple professionals tell me it was "satisfactory".

I'm like "well I normally weight lift and run marathons and do fun things.... And now I don't". 

AI and Reddit were validating and confirmed it was bad, which really gave me the confidence to persevere, and naturally as soon as I saw a surgeon they were like "yep, that's a rare presentation of arthritis, you need a replacement".

Saying thank you 

I drove to a job interview and asked Chat to lead a couple of mock interview rounds with me. Did work great. Then I asked it to give me a quick intro a very technical topic of the company. It started to rattle down a ton of bullet points.  I couldn't follow during driving the car and I mentioned it. Chat related and suggested he could tell a nice story antropomorphizing the technical things. And it was great, months later I still remember the important parts of the story. Later after the company haf made a job offer I asked Chat to create scripts fore to decline in a nice, polite, relatable way so I don't burn bridges. Then chat role-played the team lead or the HR manager in different moods in a call and I had to play my part. I was blown away how Chat's voice really felt excited or reserved according to which mood it played. After each simulated call Chat gave me valuable feedback.

I planned my vacation with gtp. I made it make lists of hotels i was interested in and gtp made an overview of the tripadvispr scores, including some pros and cons. It also included the average temperature during my stay. The trip advisor scores weren't really up to date but it was accurate enough to make a ranking.