Grok examples: 87 real use cases with prompts

Find a washing machine deal within budget in a Black Friday sale with Grok

When their old washing machine died, a UAE-based poster asked Grok for help buying a new one within budget. The poster says Grok suggested links, compared options and asked what suited them best, and they got their first-ever Black Friday deal, saving around 600 AED, with delivery due in three days.

Find a check-engine air leak a mechanic missed with Grok and ChatGPT

After their mechanic swapped 3 parts without fixing a check engine light and was about to replace another, a driver stopped the mechanic and used ChatGPT and Grok instead. The driver says they found the air leak on their own and fixed the light.

Turn a set of favourite recipes into a week's meal plan, weekend baking schedule and aisle-sorted grocery list with Grok

To feel less stressed for the week, the poster (@FeralHWife85) gave Grok five dinner recipes, a potato bun recipe, a French bread recipe and three sourdough recipes and asked it to plan the week's meals and the weekend around them. The poster says it did so flawlessly and produced a grocery list organized by store department.

Fight off a £5,800 landlord claim in court using Grok and ChatGPT

A UK poster says a former landlord tried to sue them for £5,800 in a year-long dispute. They used Grok and ChatGPT for the whole process from start to finish instead of paying a lawyer's quoted £3,000, and say they won and received the court's closure letter. They add that this is not legal advice.

Plan a week of shellfish-free, macro-friendly meals with overlapping ingredients using Grok

A poster asked Grok 4 for a week of meals for someone allergic to shellfish, hitting fitness macros, with 30 minutes max to cook and overlapping ingredients. The poster says that within 10 minutes they had 5 breakfasts, lunches and dinners with portions, one grocery list and a Sunday prep schedule, and after week one reports about 30% less grocery spending and 5+ hours saved, with less produce going to waste.

Diagnose a washing machine fault and get exact part numbers from Grok instead of calling a repairer

Instead of calling a repairer or buying a new washing machine, the poster (@notswlfty1) asked Grok for help. Grok gave step-by-step diagnosis instructions and the exact part numbers needed, and the poster fixed the machine, estimating the saving at about $2,000.

Let a teenager run a California road trip itinerary with Grok and update it daily from family feedback

On a week-long drive north from Los Angeles on Highway 101, David Stevenson handed the itinerary to their daughter, who produced one with Grok within minutes and ran it through CarPlay. As the family spent longer at places they liked, the daughter kept Grok updated and it revised the plan, adapting each day to their feedback. They visited places and restaurants they'd never have found themselves, all of which were great, with manageable driving between stops.

Get a Chevy Volt fault diagnosed on the roadside with Grok, before the dealer agreed

When a 2018 Chevy Volt had a problem, James Benson described it to Grok on the spot. Grok said the battery energy control module (BECM) needed replacing, that it was under extended warranty, and how to temporarily get home. The dealership initially said Grok was wrong, but after diagnosing the car found it was the BECM and covered by warranty.

Handle parking, road tolls and EV charging questions on a European road trip with ChatGPT and Grok

On a family road trip through Germany, Austria, Italy, Croatia and Slovenia, a poster used ChatGPT and Grok as an on-the-go assistant: planning village visits, walks and beaches, finding fairly-priced safe parking, choosing local beers and wines, and answering first-time EV road-trip questions such as where to buy national vignettes online, road taxes and trip-time estimates.

Fix a tankless water heater a company called 'shot' with Grok and ChatGPT

After a repair company said their tankless water heater was shot and quoted $6,900 to install a new one, a homeowner watched YouTube videos and chatted with Grok 4 and OpenAI's o3 model. The homeowner says they fixed it themselves the next morning in less than 30 minutes and then called the company to get their $100 back.

Find out a broken AC is just a bad thermostat with Grok and Gemini

When their AC stopped working and none of half a dozen companies could come before Friday, a poster asked Grok and Gemini. The poster says they correctly diagnosed a broken thermostat, probably saving hundreds of dollars and 2 days without AC.

Turn booked appointments into a realistic Washington DC itinerary with restaurants using Grok

Ahead of a trip to DC, a poster gave Grok the appointments already set, the hotel locations and the remaining sights the group wanted to see. The poster says it produced an itinerary and, when prompted again, restaurants near the must-do stops to save searching once there, and called the result incredible.

Plan a month-long family road trip with kosher meals using ChatGPT and Grok

Planning a month-long road trip for a family of seven, a poster used ChatGPT and Grok to map routes between national parks without backtracking, break long drives into kid-friendly segments, find lodging that fits, research kosher food and the kitchen kit needed for Shabbos, and create packing lists. They note it didn't understand kosher certification symbols and that it's not perfect.

Get an Expedia cancellation refund with Grok's help reaching the right agent

Stuck in Expedia's cancellation process and not getting the refund they believed they were owed, a poster asked Grok for help and found the Expedia phone number. They say the Expedia agent then helped them get a refund.

Choose an insurance-covered breast pump and nursery basics with Grok

A first-time mom whose insurance offered 2 pages of free or heavily discounted breast pumps had no idea where to start. They say Grok narrowed their choices by asking a few good questions, suggested a $5 fridge thermometer so milk stored in their wonky dorm fridge stays safe, and recommended a lamp and baby monitor.

Repair a chewed garden hose with Grok's measuring tips

After squirrels chewed through their garden hose, a poster described the problem to Grok. The poster says it explained how to measure the hose's inside diameter and what the standard hose-fitting repair looks like, and the fix was a piece of cake.

Build a university decision matrix for a daughter choosing between four schools, using Grok for data

A parent built a one-page decision matrix to help their daughter choose between the four universities that accepted the student, using Grok as the data source and factoring in Florida's Bright Futures scholarships. They shared it so the daughter could adjust the scoring and add criteria themselves.

Trace a car transmission problem to a faulty fuse with Grok

A driver with a transmission problem talked it through with Grok, which suggested troubleshooting steps. The driver says the cause turned out to be a faulty fuse, avoiding an expensive repair shop bill.

Narrow down an intermittent furnace problem before the HVAC visit with Grok

With their furnace acting up intermittently again, a poster ran all the symptoms and everything they'd tried through Grok. They say it walked them through the most likely issues and narrowed them down a lot; even if they couldn't fix it themselves, it armed them with information to cut troubleshooting time so the HVAC company would come prepared.

Recreate grandma's bread pudding from memory with Grok

Years after last making their grandma's bread pudding, a poster gave Grok the basics of the recipe they remembered instead of searching for hours. The poster says the recipe Grok came back with was exactly what they were looking for.

Get a Tesla's 12V power outlet working again with Grok

An X user says they wanted to plug in a Starlink but think they fried something by plugging 12V gear into the Tesla's 16V cigarette-lighter outlet, and didn't expect to get a service appointment in time. They say Grok troubleshot the problem and helped them reset the eFuse, and the Tesla is fixed.

Graph monthly traffic deaths for two states with Grok

The poster says they asked Grok to graph Iowa traffic deaths per month for the last five years, then California, to check whether a roadside death counter looked low; they shared the charts.

Rank used cars to test-drive and get a test-drive checklist with Grok

An X user says they gave Grok all the cars they were considering test-driving and it evaluated and ranked them, then gave them a detailed list of what to check on the test drive at each speed and under the hood. They say they bought a one-owner car with 48k miles and no accidents from CarMax.

Troubleshoot a misbehaving espresso machine with Grok

An X user gives Grok a shout-out for helping them fix their HP printer and then, the 'biggest challenge of all', their Breville espresso machine, which they say now works better than it has in years.