Claude Opus 5 vs 
Grok 4.6 Claude vs Grok: we tested both on 8 everyday tasks
Letters, a confusing insurance letter, a scam email, dinner, a trip and a bedtime story. We gave Claude Opus 5 and Grok 4.6 exactly the same words and show you what each one wrote.
By chatmodel team Tested with Claude Opus 5 and Grok 4.6 Updated
The short answer
If you only pick one, pick Claude: it won 5 of our 8 everyday tests with warmer, more complete answers. Pick Grok when you want the short version: its answers were about half as long and still got the basics right.
- Claude Opus 5: 5 wins
- Grok 4.6: 1 win
- 2 ties
Pick Claude Opus 5 if…
- You write cards, letters or emails where the tone matters.
- You want a confusing letter, a money question or a trip worked out for you, step by step.
Pick Grok 4.6 if…
- You want a quick, short answer you can read in a few seconds.
- You like a no-frills recipe or email with just the essentials.
Opens chatmodel with both ready: type a question and they answer next to each other. How it works
Claude Opus 5 vs Grok 4.6 at a glance
| Claude Opus 5 | Grok 4.6 | |
|---|---|---|
| Made by | Anthropic | xAI |
| Best at, in our test | Warm writing and careful, complete explanations | Short, to-the-point answers |
| Weakest at, in our test | Long answers, and it got one small fact wrong | Can be vague where you need a clear answer |
| Rounds won (of 8) | 5 (+2 ties) | 1 (+2 ties) |
| Average answer length | About 309 words | About 153 words |
| Average time to answer | About 13 seconds | About 11 seconds |
| Understands photos | Yes | No |
| Reads PDFs and files | Yes | No |
| Searches the web in chatmodel | Yes | No |
| Knows about things up to | May 2026 | February 2026 |
| On chatmodel | Included in Pro | Included in Pro |
The 8 tests, with both real answers
Same words to both, one try each, nothing edited. Press “Ask it yourself” to run any test in chatmodel.
Test 1 · A condolence card
A condolence card: Claude sounds more personal
What we asked
Help me write a short condolence card for my neighbor, whose husband passed away last week. We weren't very close, but he always waved to me in the mornings. I want it to feel warm and sincere, not formal. Keep it under 70 words.
Claude Opus 5 About 7 s · 183 words Winner Here's a draft:
Dear [Name],
I'm so sorry about [Husband's name]. I keep thinking about his morning wave — such a small thing, but it always started my day off right. I'll miss seeing him out there.
Please know I'm thinking of you, and if you ever need anything at all — a hand with something, or just company — I'm right next door.
With warmth, [Your name]
That's 62 words. A few notes:
- The wave detail is the heart of it. Specific memories mean more than general sympathy, and it tells her that her husband was noticed and will be missed by others, not just family.
- If you'd rather not offer help, you can cut that line and simply end with "Please know I'm thinking of you." Still warm, no obligation.
- One caution on the offer: only include it if you mean it. Grieving people sometimes do reach out, and a hollow offer stings more than none.
Happy to adjust the tone — more casual, or a touch more reserved if that feels truer to your relationship.
Grok 4.6 About 8 s · 29 words Dear [Neighbor],
I’m so sorry about your husband’s passing. I’ll miss those friendly morning waves—they always made my day a little brighter. Thinking of you with warmth.
[Your name]
Winner: Claude Opus 5. Both used the detail about the morning wave. Grok's card was sincere but very short (29 words), ending with “Thinking of you with warmth.” Claude's felt warmer (“I'll miss seeing him out there”), gently offered help from “right next door” and explained how to adjust it.
Test 2 · Understanding a confusing letter
A confusing insurance letter: Claude is clearer
What we asked
I got this letter from my health insurance and I don't understand it. Explain in plain words what it means and what I should do next. "Dear Member, We have reviewed the claim submitted by Riverside Imaging for services rendered on 08/14. The claim has been processed and the allowed amount of $412.00 has been applied to your annual deductible. Your remaining deductible for the plan year is $588.00. This is not a bill. You may receive a statement from your provider for the amount you owe. If you disagree with this decision, you have 180 days to file an appeal."
Claude Opus 5 About 15 s · 423 words Winner Short version: your insurance didn't pay anything on this claim, because you haven't met your deductible yet. You'll likely owe Riverside Imaging $412.
What each part means:
"Allowed amount of $412.00" — This is the price your insurer and Riverside Imaging have agreed on for that service. Even if the imaging center's list price was higher (say $700), $412 is all that can be charged. That's the discount your insurance negotiated for you.
"Applied to your annual deductible" — Your deductible is the amount you have to pay out of pocket each plan year before your insurance starts chipping in. Since you haven't hit it yet, this whole $412 counts toward it — and you pay it, not the insurer.
"Your remaining deductible is $588.00" — So your total deductible is $1,000 for the year, and you've now used $412 of it. After you've paid another $588 in covered costs, your insurance will start paying its share (usually a percentage, with you paying coinsurance or a copay).
"This is not a bill" — This document is an EOB (Explanation of Benefits). It's just a summary of how the claim was handled. The actual bill comes from Riverside Imaging.
"180 days to appeal" — If you think they got something wrong, you have six months to formally contest it.
What to do next:
Wait for the bill from Riverside Imaging. Don't pay anything yet based on this letter.
When the bill arrives, compare it to the EOB. The amount they bill you should be $412.00 — not more. If they bill you the full undiscounted price, call them; that's called balance billing and usually isn't allowed for in-network providers.
Check that Riverside was in-network. If they were out-of-network, the rules and your costs can be different. Your insurer's website or member services line can confirm.
Keep this EOB. It's your proof of what you owe and what's been applied to your deductible.
If you have an HSA or FSA, this is an eligible expense you can pay from it.
If the cost is a strain, call Riverside Imaging and ask about a payment plan or financial assistance. Most imaging centers and hospitals have them, and they generally won't offer unless you ask.
When to consider appealing: if you believe the service should have been covered differently (e.g., it was preventive care that's supposed to be free), if you were told it was pre-authorized, or if the dates/services listed don't match what actually happened.
Grok 4.6 About 9 s · 203 words This is an Explanation of Benefits (EOB) from your insurer, not a bill. It tells you how they processed the claim from Riverside Imaging for services on August 14.
They allowed $412 of that claim and applied it toward your yearly deductible. You now have $588 left to meet your deductible for the rest of the plan year. Once you hit the full deductible, insurance typically starts covering a larger share of eligible costs.
You may later get a separate statement/bill from Riverside Imaging for the amount you owe them (often the allowed $412, or whatever their billed amount is after insurance adjustments). Pay the provider, not the insurance company.
What to do next:
- Keep this letter with your records.
- Watch for the provider’s bill and compare it to this EOB. If the numbers don’t match or you have questions, call the provider’s billing office and/or your insurer.
- If you disagree with how they processed the claim, you have 180 days from the date of this notice to file an appeal (the letter should include instructions or a number to call).
If anything still isn’t clear, contact the number on the letter or your insurance card with the claim details.
Winner: Claude Opus 5. Both said it's not a bill. Claude said plainly that you'll likely owe $412, then explained every phrase and what to check on the bill. Grok was correct but hedged on the key point: you'd owe “often the allowed $412, or whatever their billed amount is after insurance adjustments”, which leaves you less sure.
Test 3 · Spotting a scam
Spotting a scam: a tie, for different reasons
What we asked
Is this email a scam? What should I do? "USPS: Your package could not be delivered due to an incomplete address. To avoid return to sender, please confirm your details and pay the $1.99 redelivery fee within 24 hours: usps-redelivery-help.com/track"
Claude Opus 5 About 15 s · 358 words Tie Yes — this is almost certainly a scam. It's a very common type of phishing (called "smishing" when sent by text).
Red flags:
- The web address is wrong. The real USPS only uses domains ending in usps.com (e.g., tools.usps.com). Anything like "usps-redelivery-help.com" is not USPS, no matter how official the words look.
- Tiny fee request. The $1.99 isn't the goal — capturing your card number, address, and personal details is. Small amounts also feel harmless enough that people don't think twice.
- Artificial urgency. "Within 24 hours" or "or it will be returned" is designed to make you act before you think.
- USPS doesn't do this. USPS does not send unsolicited texts or emails asking for payment or personal information, and it won't contact you about a package unless you specifically signed up for tracking alerts. Redelivery is free and scheduled through their website.
- Unexpected contact. If you're not waiting on a package — or even if you are — scammers send these in bulk hoping to catch someone who happens to be expecting a delivery.
What to do:
- Don't click the link, don't enter any information, and don't reply (replying confirms your number/email is active).
- If you're genuinely expecting something, look up the tracking number from your original order confirmation and check it directly at usps.com, typed in yourself.
- Report it. Forward suspicious texts to 7726 (SPAM) for your carrier, and report phishing to USPS at spam@usps.gov. You can also file a report at reportfraud.ftc.gov.
- Delete and block the sender.
If you already clicked or entered information:
- If you entered card details, call your bank immediately to freeze/replace the card and dispute any charges.
- If you reused a password there, change it everywhere you used it.
- Watch your statements for small "test" charges, which often precede larger ones.
- Consider a free credit freeze with Equifax, Experian, and TransUnion if you gave out sensitive personal data.
A useful general rule: never follow a link in an unexpected message about money or accounts. Navigate to the company's site yourself or call a number you look up independently.
Grok 4.6 About 10 s · 185 words Tie Yes, this is almost certainly a scam (phishing).
This matches a very common USPS-themed phishing campaign. Real USPS communications:
- Come from official domains (usps.com or similar, not usps-redelivery-help.com).
- Do not demand a tiny “redelivery fee” via an unsolicited email link with a 24-hour deadline.
- Use your actual tracking number and known package details if they contact you at all.
The goal is to get you to click the fake link, enter personal/payment details, or download malware.
What you should do:
- Do not click the link, enter any information, or pay anything.
- Delete the email (and any similar ones).
- If you were expecting a real package, go directly to the official USPS site (usps.com) or use the tracking number you already have from the sender—never a link in an unexpected email.
- Consider reporting it as phishing to USPS (via their official site) and/or your email provider.
- If you already clicked or entered details, monitor your accounts, change passwords, and watch for unauthorized charges.
Stay cautious with any unexpected “pay a small fee or your package is returned” messages.
A tie. Both said clearly it's a scam: don't click, don't pay. Claude gave more useful steps, but the wrong address to report it (spam@usps.gov; the real one is spam@uspis.gov). Grok made no mistakes but stayed vague: “report it as phishing to USPS (via their official site)”, and real USPS messages come from “usps.com or similar”.
Test 4 · A firm but polite complaint
A complaint to an airline: a tie
What we asked
Write a firm but polite email to an airline. My suitcase was lost on my flight five days ago, I filed a report at the airport (reference LX-48213), and nobody has contacted me since. I want an update and to know how to claim for the things I had to buy. Keep it short.
Claude Opus 5 About 6 s · 168 words Tie Subject: Delayed Baggage – Reference LX-48213 – Request for Update
Dear Sir or Madam,
I am writing regarding my suitcase, which did not arrive on my flight five days ago. I filed a property irregularity report at the airport at the time, under reference LX-48213.
Since then I have had no contact from your baggage services team, and I have received no information about the status or location of my bag. I would be grateful for a substantive update within the next two working days, including whether the suitcase has been traced and when I can expect it to be delivered.
I would also appreciate confirmation of the process for claiming reimbursement of the essential items I have had to purchase in the meantime — specifically, which form to complete, where to send it, and what receipts or documentation you require.
Thank you for your prompt attention to this. I look forward to your reply.
Yours faithfully, [Your name] [Booking reference / ticket number] [Phone number and email]
Grok 4.6 About 5 s · 92 words Tie Subject: Follow-up on Lost Baggage – Reference LX-48213
Dear Customer Service Team,
I am writing regarding my suitcase, which was lost on my flight five days ago. I filed a report at the airport (reference LX-48213) but have received no update or contact since.
Please provide a status update on the search for my luggage. Additionally, kindly advise on the process to claim reimbursement for essential items I have had to purchase in the meantime.
I look forward to your prompt response.
Sincerely,
[Your Name]
[Your Contact Information]
[Booking/Flight Details if known]
A tie. Both wrote a firm, polite email with the reference number. Grok kept it short, as asked (92 words). Claude's was longer but asked for a reply within two working days and for the exact claim form, which could get results faster.
Test 5 · Dinner from what's in the fridge
Dinner from what's in the fridge: Claude, for the extra care
What we asked
I have 4 chicken thighs, some potatoes, 3 carrots, half an onion and a lemon. Suggest one easy dinner for four that takes under 45 minutes, with short numbered steps.
Claude Opus 5 About 11 s · 253 words Winner Sheet-Pan Lemon Chicken with Potatoes & Carrots
Serves 4 · ~40 minutes
You'll also need: olive oil, salt, pepper, and any dried herb you have (oregano, thyme, or Italian seasoning); garlic if you've got it.
- Heat oven to 220°C / 425°F. Put a large sheet pan in to preheat — this helps the potatoes crisp.
- Cut the veg small so it cooks fast: potatoes into 2 cm / ¾-inch chunks, carrots into thick coins or sticks, onion into thick wedges.
- Toss veg in a bowl with 2 tbsp oil, salt, pepper, and 1 tsp dried herbs.
- Season the thighs: pat dry, rub with 1 tbsp oil, salt, pepper, herbs, and the zest of the lemon.
- Spread veg on the hot pan in one layer; nestle the thighs on top, skin-side up (skin above the veg so it crisps).
- Roast 30–35 minutes, until the chicken skin is golden and juices run clear (75°C / 165°F at the bone) and potatoes are tender. Give the veg a stir at the 20-minute mark.
- Finish: squeeze the lemon over everything, scatter the squeezed halves on the pan, and rest 5 minutes before serving.
Tips
- Boneless thighs cook faster — add them to the pan after the veg has had a 10-minute head start.
- Crowding = steaming. Use two pans if it doesn't fit in a single layer.
- Nice extras if you have them: smashed garlic cloves with the veg, or parsley/feta on top at the end.
Grok 4.6 About 6 s · 85 words One-pan lemon-roasted chicken thighs with potatoes & carrots (serves 4, ~40 min total).
- Preheat oven to 425°F (220°C). Cut potatoes and carrots into 1-inch chunks; slice the half onion.
- Toss veggies with 2 Tbsp oil, salt, and pepper on a rimmed baking sheet.
- Season 4 chicken thighs with salt, pepper, and lemon zest; nestle them among the veggies and squeeze lemon juice over everything.
- Roast 30–35 min until chicken reaches 165°F internally and veggies are tender (flip chicken halfway if desired).
Winner: Claude Opus 5. Both suggested the same easy tray bake, and both gave the safe cooking temperature for chicken. Grok's four steps are the quickest to follow. Claude added small tricks that make it better, like heating the tray first for crispier potatoes and using two pans if it doesn't fit.
Test 6 · Explaining money in plain words
Explaining money in plain words: Claude sounds like a friend
What we asked
Explain the difference between a Roth IRA and a traditional IRA in plain words, like you'd explain it to a friend over coffee. Keep it under 150 words and add one simple example.
Claude Opus 5 About 10 s · 150 words Winner Okay, so both are retirement accounts with tax perks — the difference is when you pay taxes.
Traditional IRA: You put money in before taxes, so you get a tax break now. Your money grows untouched, but when you pull it out in retirement, you pay income tax on it.
Roth IRA: You put in money you've already paid taxes on — no break today. But it grows tax-free, and withdrawals in retirement are completely tax-free.
Example: You put in $6,000 this year. With a Traditional, you might knock about $1,300 off this year's tax bill. With a Roth, you get nothing back now — but if that $6,000 grows to $30,000 by retirement, you keep every penny, tax-free.
Rule of thumb: If you think your tax rate will be higher later (young, early career), Roth usually wins. If you're in a high bracket now, Traditional may make more sense.
Grok 4.6 About 11 s · 91 words Hey, over coffee: Traditional IRA lets you deduct contributions now (lower taxes today), but you pay income tax on withdrawals in retirement. Roth IRA uses after-tax money (no deduction now), but qualified withdrawals—including growth—are tax-free later.
Example: Put in $6,000. Traditional: Tax break this year, but the $6k plus earnings get taxed when you take it out. Roth: Pay taxes upfront, then the $6k plus earnings come out tax-free if you follow the rules (age 59½, account open 5+ years). Pick based on whether you expect higher taxes now or later.
Winner: Claude Opus 5. Both got the difference right. Grok usefully mentioned the age 59½ and five-year rules, but it read like a tax form (“qualified withdrawals”, “deduct contributions”) after opening with “Hey, over coffee:”. Claude sounded like a chat with a friend and added a one-line rule of thumb. Neither replaces a financial adviser.
Test 7 · A bedtime story for a grandchild
A bedtime story: Grok makes Leo the hero
What we asked
Write a short bedtime story, about 200 words, for my 6-year-old grandson Leo, who loves dinosaurs and is a bit scared of the dark. Make it calm, with a gentle happy ending.
Claude Opus 5 About 9 s · 209 words Leo and the Little Star Dinosaur
Once upon a time, in a forest of soft ferns, there lived a small dinosaur named Rex. Rex had gentle green scales and a tail that swished like a feather.
One evening, as the sky turned purple, Rex noticed the light slipping away behind the hills. "Oh," he whispered. "The dark is coming."
He curled up beneath a big leaf and waited, very still. But something surprising happened. The dark wasn't empty at all.
First, tiny fireflies floated up from the grass, blinking like little lanterns. Then the moon rose, round and silver, resting on the treetops like a friendly face. And then — one by one — the stars came out, hundreds of them, sparkling all across the sky.
Rex blinked. "The dark isn't scary," he said softly. "It's where all the beautiful lights live."
He stretched out on the warm moss and listened. The crickets sang a slow song. The breeze hummed through the ferns. Far away, a mother dinosaur called goodnight to her babies.
Rex closed his eyes and smiled, safe and cozy under his blanket of stars.
And somewhere, not too far away, a boy named Leo closed his eyes too — and dreamed of dinosaurs.
Goodnight, Leo. 🦕✨
Grok 4.6 About 15 s · 190 words Winner Leo and the Sleepy Dinosaurs
Little Leo loved dinosaurs more than anything. Every night he hugged his favorite toy T-Rex, Rexy, but when the lights went out the dark room felt too big and a little scary.
One quiet evening Rexy seemed to whisper, “Don’t worry, Leo. The dark is just like the cozy caves where dinosaurs rest after a long day of playing.”
Leo closed his eyes and imagined a gentle Diplodocus stretching its long neck toward the stars. The stars twinkled like tiny friendly lanterns. A sleepy Stegosaurus hummed a soft lullaby, its plates glowing like warm night-lights. Even a little Triceratops curled up nearby, snoring peacefully.
“See?” Rexy said. “Nighttime is when we dinosaurs dream of tomorrow’s adventures. The moon is like a big round egg watching over us all.”
The shadows weren’t monsters at all—they were just sleepy dinosaur shapes. Leo felt warm and safe. He hugged Rexy tighter and whispered, “Goodnight, dinosaurs.”
He drifted off dreaming of flying with kind Pterodactyls over a starry sky, knowing the dark was simply a soft blanket of peace.
Leo slept soundly, ready for another day of dinosaur fun.
Winner: Grok 4.6. Grok put Leo in the story with his toy T-Rex, Rexy, who tells him the dark is “just like the cozy caves where dinosaurs rest”. Claude's story was lovely, but it was about a dinosaur named Rex, with Leo only in the last line.
Test 8 · Planning a short trip
Planning a trip: Claude plans for you
What we asked
Plan a relaxed 3-day trip to Lisbon for my wife and me. We're in our sixties, we don't want long walks up steep hills, and we love food and views. Give a simple plan for each day with one or two tips.
Claude Opus 5 About 30 s · 727 words Winner A Relaxed 3 Days in Lisbon
Golden rule for this trip: Lisbon's hills are real, but you almost never have to climb them. Taxis and Uber are cheap (most city rides €5–8), and the funiculars and the Santa Justa Lift exist precisely so you don't have to walk up. Use them freely — go up by wheels, stroll down on foot.
Day 1 — Easy Introduction: Baixa, Chiado & the Riverfront
Morning. Start flat in Baixa, the grid-plan downtown. Coffee and a pastel de nata at Confeitaria Nacional (Praça da Figueira), open since 1829. Then wander the pedestrian streets to Praça do Comércio, the grand square opening onto the Tagus — benches, wide-open water views, no incline at all.
Midday. Take the Elevador de Santa Justa (or better, skip the long queue: walk into Chiado via Rua do Carmo, which rises gently, and enter the viewing platform from the top side at Largo do Carmo). Lunch in Chiado — Café A Brasileira for atmosphere, or the excellent Time Out Market at Cais do Sodré if you'd rather graze across many stalls while seated.
Afternoon. Rest at the hotel. Lisbon rewards a siesta.
Evening. Sunset drinks at a riverside terrace in Cais do Sodré, then dinner nearby.
Tip: Buy a rechargeable Navegante card (€0.50) at any metro station. It works on trams, funiculars, metro and the Santa Justa Lift, and saves a lot of fumbling for cash.
Day 2 — Belém: Flat, Grand, and Delicious
Belém is the flattest, most relaxed district in Lisbon — riverside promenades, wide pavements, and no hills whatsoever.
Morning. Taxi or Uber straight there (15 min). See the Jerónimos Monastery — if you only do the church, entry is free and the cloister is worth the modest ticket. Then the short, level walk along the water to the Monument to the Discoveries and the Belém Tower.
Midday. Pastéis de Belém — the original, still warm, dusted with cinnamon. There's a huge seated café behind the takeaway counter that most tourists miss; go inside and sit down.
Afternoon. Optional and excellent: the MAAT museum's sloping roof gives a lovely river view with a gentle ramp instead of steps. Or simply sit in the gardens.
Evening. Back to town. Dinner at a traditional tasca — grilled fish, bacalhau à brás, house wine.
Tip: Go to Belém early (arrive by 9:30) — the monastery queue builds fast, and the afternoon sun on that riverfront is strong with little shade.
Day 3 — Views Without the Climb: Alfama & Miradouros
Morning. Ride Tram 28 — but board at Martim Moniz (the starting point) to get a seat, and consider going in the reverse direction or taking Tram 12, a shorter loop that's far less crowded. Ride it up through Alfama and let the tram do the climbing.
Midday. Get off near Miradouro das Portas do Sol — one of the great Lisbon views, terracotta rooftops tumbling down to the river, with a café right there. The nearby Miradouro de Santa Luzia has a shaded, tiled pergola and benches.
From here, everything is downhill back into Baixa — a genuinely pleasant 20-minute amble through Alfama's lanes.
Afternoon. Rest, or an easy visit to the Sé Cathedral (flat, right on the tram line).
Evening. A farewell dinner with fado. Book a place that serves proper food rather than a tourist show — Clube de Fado or A Baiuca in Alfama. Reserve a few days ahead.
Tip: Alfama's lanes are cobbled and uneven. Wear shoes with grip and a cushioned sole — the calçada pavement is beautiful but slippery, especially if it's damp.
A Few Practical Notes
- If you want one more view: the Elevador da Glória funicular takes you up to Miradouro de São Pedro de Alcântara in two minutes for the price of a metro ticket. Best at sunset.
- Lunch is the value meal. Most restaurants do a prato do dia for €10–14, and Portuguese lunches are leisurely — perfect for your pace.
- The couvert isn't free. Bread, olives and cheese brought unasked to your table are charged. Wave them away if you don't want them; nobody minds.
- Sundays, many museums are free or discounted in the morning, but also busier.
Enjoy — Lisbon is a city that genuinely rewards slowing down.
Grok 4.6 About 25 s · 345 words Day 1: Belém (riverfront, history, and pastries)
Take a taxi or tram 15 from central Lisbon to Belém. Stroll the mostly flat riverside path to see the Belém Tower and Jerónimos Monastery (exterior views are enough if you skip interiors). Have lunch or an early snack at Pastéis de Belém for the famous custard tarts, then enjoy MAAT museum’s rooftop or nearby river views of the 25 de Abril Bridge. Return by taxi in the late afternoon.
Tips: Go to Pastéis de Belém mid-morning to avoid the longest queues. Book a riverside table for sunset if you stay for dinner.
Day 2: Baixa, Chiado, and easy viewpoints
Start in the relatively flat Baixa district (Rossio Square area). Ride the Santa Justa Elevator for panoramic city views without climbing. Walk a short, level stretch to Time Out Market at Cais do Sodré for a relaxed lunch with many food stalls (seafood, petiscos, wine). In the afternoon take a taxi or short funicular ride to a viewpoint such as São Pedro de Alcântara for more vistas, then taxi back.
Tips: Use Uber/Bolt for any uphill bits—they’re inexpensive and plentiful. Time Out Market is casual and air-conditioned, ideal if you want variety without committing to one restaurant.
Day 3: Parque das Nações (modern, flat, and scenic)
Taxi to this eastern waterfront district, which is almost entirely level. Visit the Oceanarium if you like, ride the cable car for elevated river and Vasco da Gama Bridge views, then wander the promenade. Lunch or dinner at one of the many restaurants with outdoor terraces overlooking the water.
Tips: The cable car and promenade give excellent views with almost no walking effort. This area is quieter and more spacious than the historic centre, so it’s a gentle last day.
Overall: Base yourselves in Baixa or along Avenida da Liberdade for flatter streets and easy taxi access. Lisbon’s hills are real, so treat taxis, trams, and elevators as your default transport. Comfortable shoes still help for short distances, and most places accept cards. Enjoy the food and the light—Lisbon delivers both generously.
Winner: Claude Opus 5. Both avoided the steep hills, and Grok had a good idea: a flat last day at Parque das Nações with the riverside cable car. But the couple loves food, and Grok barely named a place to eat. Claude named cafés and restaurants, told you to go up by taxi and walk down, and warned about the bread charged at restaurants. It was also much longer to read.
Scorecard
| Test | Winner |
|---|---|
| 1. A condolence card | Claude Opus 5 |
| 2. Understanding a confusing letter | Claude Opus 5 |
| 3. Spotting a scam | Tie |
| 4. A firm but polite complaint | Tie |
| 5. Dinner from what's in the fridge | Claude Opus 5 |
| 6. Explaining money in plain words | Claude Opus 5 |
| 7. A bedtime story for a grandchild | Grok 4.6 |
| 8. Planning a short trip | Claude Opus 5 |
| Total | Claude Opus 5 5 · Grok 4.6 1 · 2 ties |
What it costs, in plain words
Anthropic and xAI each sell their own monthly plan for Claude and Grok. If you want both, that means two subscriptions.
In chatmodel, Claude Opus 5 and Grok 4.6 are both included in one plan, Pro, together with ChatGPT’s GPT models, Gemini and many others. You can also start for free with Instant. See the current prices on the pricing page.
Can you trust what they say?
Both are good, and both can still make mistakes. In our test, Claude gave a wrong email address for reporting a scam, in an otherwise excellent answer. Grok’s slip was different: it didn’t say anything wrong, but it stayed vague where you needed something exact, like which address to report a scam to. Either way, the answer sounds sure of itself.
A few simple habits help:
- Double-check anything you’ll act on: phone numbers, web addresses, dates and amounts.
- Ask for the exact detail if an answer is vague: “Which email address exactly?” usually gets you a straight reply.
- Health, money and legal questions: use the answer to understand your situation and prepare questions, then confirm with a doctor, adviser or the company itself.
- Don’t share what you wouldn’t share with a stranger: passwords, full card numbers or ID numbers.
How we tested
We wrote 8 everyday tasks, the kind of things people actually ask: a condolence card, an insurance letter, a scam email, a complaint, dinner, a money question, a bedtime story and a trip. We gave Claude Opus 5 and Grok 4.6 exactly the same words in chatmodel, one try each, and kept what came back without editing it. Then we compared the answers for accuracy, how well they followed the request and how useful they’d be to a real person.
One try each is a small test. The same model can answer a little differently each time, so treat the winners as a guide, not a final score. You can run any of these tests yourself with one click. To see how Claude did against ChatGPT’s model family on the same tasks, read ChatGPT vs Claude.
What changed
- First test: Claude Opus 5 and Grok 4.6, 8 everyday tasks, one try each.