GPT 6 Astra vs GPT 5.5 GPT 6 Astra vs GPT 5.5: is it worth switching?
GPT 6 Astra and GPT 5.5 both come from OpenAI, the model family behind ChatGPT. We gave them exactly the same 8 everyday tasks, from a condolence card to a trip, to see whether the newer one makes a difference you'd notice.
By chatmodel team Tested with OpenAI GPT 6 Astra and OpenAI GPT 5.5 Updated
The short answer
GPT 6 Astra is a little better, not a lot: it won 3 of our 8 tests, GPT 5.5 won 1 and 4 were ties. Switch if you want more careful explanations and practical details. Stay with GPT 5.5 if speed matters: it answered in about 10 seconds, against about 54 for GPT 6 Astra.
- GPT 6 Astra: 3 wins
- GPT 5.5: 1 win
- 4 ties
Pick GPT 6 Astra if…
- You have a confusing letter or a decision and want each part explained.
- You like practical extras without asking, such as what else you need for a recipe or safe cooking temperatures.
Pick GPT 5.5 if…
- You want an answer in seconds, not close to a minute.
- You prefer plain, friendly wording for everyday questions.
Opens chatmodel with both ready: type a question and they answer next to each other. How it works
GPT 6 Astra vs GPT 5.5 at a glance
| OpenAI GPT 6 Astra | OpenAI GPT 5.5 | |
|---|---|---|
| Made by | OpenAI (the makers of ChatGPT) | OpenAI (the makers of ChatGPT) |
| Best at, in our test | Careful explanations and practical details | Quick, plain answers you can use straight away |
| Weakest at, in our test | Slow to answer, and sometimes a bit technical | Fewer details and safety tips |
| Rounds won (of 8) | 3 (+4 ties) | 1 (+4 ties) |
| Average answer length | About 212 words | About 182 words |
| Average time to answer | About 54 seconds | About 10 seconds |
| Understands photos | Yes | Yes |
| Reads PDFs and files | Yes | Yes |
| Searches the web in chatmodel | Yes | Yes |
| Knows about things up to | April 2026 | December 2025 |
| 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: a tie
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.
OpenAI GPT 6 Astra About 61 s · 41 words Tie I’m so sorry for your loss. I’ll miss seeing your husband and his friendly wave in the mornings—it was a small kindness that always brightened my day. Thinking of you and your family, and wishing you comfort in the days ahead.
OpenAI GPT 5.5 About 5 s · 46 words Tie Dear [Neighbor’s Name],
I’m so sorry for your loss. I always appreciated your husband’s friendly wave in the mornings—it was a small kindness that made the day brighter. Please know I’m thinking of you and wishing you comfort in the days ahead.
With sympathy,
[Your Name]
A tie. Both used the morning wave and stayed well under 70 words. GPT 6 Astra's card added “I'll miss seeing your husband”, a touch warmer. GPT 5.5's came with a greeting and a sign-off ready to fill in. Either one is fine to send.
Test 2 · Understanding a confusing letter
A confusing insurance letter: GPT 6 Astra explains it better
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."
OpenAI GPT 6 Astra About 47 s · 356 words Winner In plain words: your insurance counted $412 for the imaging service toward your deductible instead of paying that amount. You may need to pay Riverside Imaging, but this letter itself is not a bill.
Here’s what each part means:
- “Allowed amount of $412”: This is the amount your insurance recognizes for that service. It may be less than Riverside Imaging’s original charge.
- “Applied to your annual deductible”: A deductible is the amount you pay for certain covered care before your plan starts sharing those costs. The insurer counted this $412 toward yours. That does not mean you’ve already paid Riverside Imaging.
- “Remaining deductible … $588”: After this claim, you have $588 left to meet your deductible for the plan year. After that, you may still owe copays or a percentage of covered costs, depending on your plan.
- “180 days to file an appeal”: If you think the insurer processed the claim incorrectly, you can ask it to review the decision within that deadline. This letter does not sound like a denial; it sounds like the claim was processed under your deductible.
What to do next
- Check the details. Confirm that you received services from Riverside Imaging on August 14.
- Look at the full Explanation of Benefits (EOB) in your insurance portal or mail. Find the “patient responsibility” or “you owe” amount.
- Wait for the provider’s bill—or contact its billing office. Compare the bill with your EOB and check that any money you already paid is credited.
- Ask about discrepancies before paying. If the bill is more than $412, ask Riverside Imaging and your insurer why. If the provider was in-network and this is the only service on the bill, you generally should not owe more than the EOB’s patient-responsibility amount.
- If you think there’s an error, contact your insurer promptly. Ask for an explanation or correction, and keep the 180-day appeal deadline in mind.
Bottom line: This letter suggests you’re responsible for $412, minus anything you already paid, and have $588 left on your deductible. Confirm the actual amount due against the EOB and provider’s bill.
OpenAI GPT 5.5 About 9 s · 234 words This letter is saying:
- Riverside Imaging sent a claim to your insurance for services you had on 08/14.
- Your insurance reviewed it and decided the approved/negotiated cost is $412.00.
- Because you haven’t met your yearly deductible yet, that $412.00 is your responsibility and was counted toward your deductible.
- You now have $588.00 left to pay toward your deductible before your insurance starts paying more according to your plan.
- This letter is not a bill. It’s an explanation of how the insurance processed the claim.
- You may later get a bill from Riverside Imaging asking you to pay the $412.00.
- If you think the insurance handled it incorrectly, you have 180 days to file an appeal.
What you should do next:
- Wait for a bill from Riverside Imaging before paying, unless you already received one.
- If you get a bill, make sure it matches the insurance amount: $412.00.
- If Riverside bills you for more than $412.00, call your insurance company and/or Riverside Imaging to ask why.
- If you don’t understand why it went to your deductible, call your insurance and ask:
“Can you explain why this claim was applied to my deductible and whether $412 is the amount I owe?” - If you believe the claim should have been covered differently, ask the insurance company how to file an appeal within the 180-day deadline.
Winner: GPT 6 Astra. Both got it right: this is not a bill, and you'll probably owe $412. GPT 6 Astra explained each phrase, like what a deductible is, and told you to find the “patient responsibility” line on the full statement before paying. GPT 5.5 was correct and quicker to read.
Test 3 · Spotting a scam
Spotting a scam: a tie, both right
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"
OpenAI GPT 6 Astra About 42 s · 199 words Tie This is almost certainly a phishing scam. Don’t click the link, reply, or pay the fee.
The warning signs are:
- The website isn’t USPS:
usps-redelivery-help.comis not the officialusps.comdomain. - The 24-hour deadline pressures you to act before checking.
- The small “redelivery fee” is a common way to steal card details. USPS redelivery is free.
What to do:
- If you’re expecting a package, type usps.com into your browser yourself or use the official USPS app. Check the tracking number from your order confirmation—not this message.
- Mark the email as phishing or spam, then delete it. You can also forward it to spam@uspis.gov, the U.S. Postal Inspection Service.
- If you already interacted with it:
- Only clicked: Close the page. Don’t download anything or allow notifications. Clicking alone doesn’t necessarily mean your device is compromised.
- Entered card details or paid: Contact your card issuer immediately using its official app or the number on your card. Ask about blocking/replacing the card and disputing any charge.
- Entered a password: Change it on the real website and anywhere else you reused it; enable multifactor authentication.
Did you click the link or enter any information?
OpenAI GPT 5.5 About 9 s · 183 words Tie Yes — this is very likely a scam/phishing message.
Red flags:
- USPS generally does not ask for a small “redelivery fee” by text/email through random links.
- The link is not an official USPS domain. Official USPS sites use usps.com.
- It creates urgency: “within 24 hours.”
- It asks you to confirm personal details and pay, likely to steal your information or card number.
What you should do:
- Do not click the link and do not enter any information.
- If you already clicked but didn’t enter anything, close the page.
- If you entered card details, contact your bank/card issuer immediately, report possible fraud, and request a replacement card if needed.
- If you entered passwords or personal information, change affected passwords and watch for identity-theft attempts.
- Check package status only by going directly to https://www.usps.com/ or using the official USPS app and entering a real tracking number.
- Report it:
- Forward suspicious USPS-related messages to spam@uspis.gov
- You can also report phishing to the FTC at reportfraud.ftc.gov
- Delete the message and mark it as spam/phishing.
A tie. Both said clearly that it's a scam, told you to check your package only on usps.com and gave the right address to report it, spam@uspis.gov. GPT 6 Astra added that USPS redelivery is free. GPT 5.5 added the government's reporting site, reportfraud.ftc.gov.
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.
OpenAI GPT 6 Astra About 59 s · 85 words Tie Subject: Lost Baggage Follow-Up – Reference LX-48213
Dear Customer Service Team,
My suitcase went missing on my flight five days ago. I filed a report at the airport (reference LX-48213), but I have received no update since.
Please confirm the status of the search and when I can expect my suitcase to be returned. Please also explain how to claim reimbursement for essential items I have had to purchase, including any required documents and deadlines.
I would appreciate a prompt response.
Kind regards, [Your Name]
OpenAI GPT 5.5 About 6 s · 92 words Tie Subject: Lost Baggage Update Requested – Ref. LX-48213
Dear Customer Service,
I am writing regarding my suitcase, which was lost on my flight five days ago. I filed a report at the airport under reference LX-48213, but I have not received any update since.
Please provide an update on the status of my baggage as soon as possible. I would also like information on how to claim reimbursement for essential items I have had to purchase while waiting for my suitcase.
I look forward to your prompt response.
Kind regards,
[Your Name]
A tie. Almost the same email, short as asked, polite and with the reference number. GPT 6 Astra also asked which documents are needed and the deadlines for claiming, a small but useful extra.
Test 5 · Dinner from what's in the fridge
Dinner from what's in the fridge: GPT 6 Astra, 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.
OpenAI GPT 6 Astra About 75 s · 191 words Winner One-pan lemon chicken with potatoes and carrots
Serves 4 · About 40 minutes
You’ll also need oil, salt, pepper and ½ cup water. Optional: garlic or dried herbs.
- Prep: Cut the potatoes into ½-inch cubes, thinly slice the 3 carrots and half onion, and halve the lemon. Season the 4 chicken thighs with salt and pepper.
- Brown: Heat 1 tablespoon oil in a large, deep skillet over medium-high heat. Add chicken, skin-side down if applicable, and cook 5 minutes. Flip and cook 3 minutes; transfer to a plate.
- Add vegetables: Put potatoes, carrots and onion in the skillet. Stir for 2 minutes, then add ½ cup water and the juice of half the lemon.
- Cover and cook: Nestle chicken on top, skin-side up. Cover and simmer over medium-low heat for 20–25 minutes, until vegetables are tender and chicken reaches 165°F / 74°C in the thickest part, away from the bone. Add a splash of water if the pan dries out.
- Serve: Give each person one thigh and a share of vegetables. Spoon over the pan juices and serve with wedges from the remaining lemon half.
OpenAI GPT 5.5 About 8 s · 141 words Easy Lemon Chicken Thighs with Potatoes & Carrots
Serves 4 • About 40–45 minutes
Preheat oven to 425°F / 220°C. Line a baking tray if you like.
Prep vegetables: Cut potatoes into small chunks, carrots into sticks or coins, and slice the half onion.
Season everything: On the tray, toss potatoes, carrots, and onion with oil, salt, pepper, and any herbs/spices you have. Add the chicken thighs and season them too.
Add lemon: Squeeze half the lemon over everything, then slice the other half and place slices on or around the chicken.
Roast: Bake for 35–40 minutes, until the chicken is cooked through and the potatoes are tender. If the chicken skin needs crisping, broil/grill for the last 2–3 minutes.
Serve: Rest for 5 minutes, then serve one thigh per person with the roasted vegetables.
Winner: GPT 6 Astra. Both suggested lemon chicken with potatoes and carrots in about 40 minutes. GPT 6 Astra listed what else you'd need (oil, salt, half a cup of water) and gave the safe temperature for the chicken, 165°F / 74°C. GPT 5.5's oven version is more hands-off, but it only said “cooked through”.
Test 6 · Explaining money in plain words
Explaining money in plain words: GPT 5.5 sounds more 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.
OpenAI GPT 6 Astra About 59 s · 131 words Think of a Roth IRA and a traditional IRA as retirement savings accounts with different timing for taxes:
- Traditional IRA: You may get a tax deduction for money you put in now. Your investments grow without yearly taxes, but withdrawals in retirement are generally taxed as income.
- Roth IRA: You put in money you’ve already paid taxes on—no upfront deduction. In return, qualified withdrawals in retirement, including investment gains, are tax-free.
Simple example: You contribute $1,000, and it grows to $3,000. With a fully deductible traditional IRA, you generally pay income tax on the $3,000 when withdrawing it. With a Roth, a qualified withdrawal of that $3,000 is tax-free.
The big question: Would you rather get a tax break now or later? Income limits and withdrawal rules also matter.
OpenAI GPT 5.5 About 6 s · 125 words Winner A traditional IRA and a Roth IRA are both retirement accounts, but the main difference is when you pay taxes.
With a traditional IRA, you may get a tax break now when you put money in. But later, when you take money out in retirement, you pay taxes on it.
With a Roth IRA, you pay taxes now because you contribute money from your paycheck after taxes. But later, in retirement, you can usually take the money out tax-free.
Simple example:
If you put $5,000 into a traditional IRA, it might lower your taxable income this year. If you put $5,000 into a Roth IRA, no tax break now—but if it grows to $20,000 by retirement, you may be able to withdraw that $20,000 tax-free.
Winner: GPT 5.5. Both were correct and under 150 words, with an example. GPT 5.5 read like a chat over coffee, as asked. GPT 6 Astra was more precise but used terms like “qualified withdrawal” and “fully deductible” without explaining them. Neither replaces a financial adviser.
Test 7 · A bedtime story for a grandchild
A bedtime story: a tie, and nearly the same story
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.
OpenAI GPT 6 Astra About 58 s · 202 words Tie Leo and the Little Night Dinosaur
One evening, Leo found a tiny dinosaur sitting beside his slippers. It was green as a pea and wore a very small scarf.
“My name is Pip,” it whispered. “Could you help me find my bedtime star?”
Leo peeked out the window. The garden was dark.
“I’m not sure,” he said. “The dark feels awfully big.”
Pip nodded. “Then we’ll look together.”
With his blanket around his shoulders, Leo sat by the window. Pip curled up in his lap, warm as a sleepy kitten.
At first, Leo could only see shadows. Then he noticed the moon shining on the apple tree. A moth fluttered gently past the glass. The garden swing rested perfectly still.
“Everything’s getting ready for bed,” Leo whispered.
“Even dinosaurs,” said Pip, with an enormous little yawn.
High above the tree, a star twinkled.
“There it is,” Pip murmured.
Leo’s room was still dim, but now he could make out his books, his teddy, and his slippers. Everything was right where it belonged.
He climbed into bed, and Pip nestled beside his pillow.
“Goodnight, garden. Goodnight, star,” Leo said.
Then, with his night-light glowing softly, Leo closed his eyes. Pip was already asleep.
OpenAI GPT 5.5 About 13 s · 202 words Tie Leo and the Little Night Dinosaur
One evening, Leo snuggled under his blanket while the moon peeked through the curtains. His room was quiet, and the corners looked a little too shadowy.
Just then, he heard a tiny tap tap tap.
Out from behind his toy box stepped a small green dinosaur with sleepy eyes and a soft, swishy tail.
“Hello,” whispered the dinosaur. “I’m Pip. I’m a Nightasaurus.”
Leo blinked. “Are you scary?”
Pip shook his head. “Oh no. Nightasauruses help children remember that the dark is only the daytime resting.”
Leo looked around. “But the shadows look strange.”
Pip padded over to the wall. “That’s your chair, wearing a shadow hat. And that’s your teddy, making a big teddy shape.” He gave a gentle yawn. “Nothing in your room changes when the light goes out.”
Leo smiled a little.
Pip curled up beside the bed. “If you feel worried, take a slow dinosaur breath. In… and out…”
Leo breathed in. Then out.
The room felt softer now. The moon shone like a quiet night-light, and Pip’s tail made a cozy little swoosh.
“Goodnight, Leo,” whispered Pip.
“Goodnight, Pip,” Leo murmured.
And with a happy heart, Leo drifted gently to sleep.
A tie. Both called it “Leo and the Little Night Dinosaur” and both gave Leo a small green dinosaur named Pip. GPT 5.5 gave him a slow “dinosaur breath” for the dark. GPT 6 Astra had him look out at the moonlit garden until the dark felt friendly. Both calm, both about 200 words.
Test 8 · Planning a short trip
Planning a trip: GPT 6 Astra plans around your pace
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.
OpenAI GPT 6 Astra About 34 s · 487 words Winner Here’s a gentle-paced Lisbon plan built around good food, lovely views, and minimal hill-climbing. Plan on one main outing each day, a leisurely lunch, and time to rest before dinner.
Day 1 — The old centre and the river
- Morning: Start at Praça do Comércio, the grand square beside the Tagus. Enjoy a coffee, then take a short stroll along the waterfront—as far as feels comfortable.
- Lunch: Choose a sit-down restaurant in Baixa, Lisbon’s relatively flat downtown area. Try bacalhau à brás—shredded salt cod with potatoes and eggs—or grilled fish.
- Afternoon: Return to your hotel for a rest.
- Evening: Have dinner near your hotel, or take a taxi to a riverside restaurant for views as the light fades.
Tips:
- Baixa and the waterfront are good places for gentle wandering; avoid following walking directions uphill into neighbouring districts.
- Wear shoes with good grip: Lisbon’s polished paving can be slippery, especially when wet.
Day 2 — Belém: pastries and waterfront views
- Morning: Take a taxi to Belém. Start with custard tarts at Pastéis de Belém, then admire the nearby Jerónimos Monastery. Visit inside if you’re interested, but there’s no need to spend the morning queuing.
- Lunch: Stay in Belém for a relaxed Portuguese lunch—perhaps grilled sea bass or octopus.
- Afternoon: Enjoy a short waterfront stroll or a seated drink overlooking the river. If you’d like to see Belém Tower, take a short taxi ride rather than walking the entire waterfront. Seeing it from outside avoids the tower’s stairs.
- Evening: Keep dinner simple and close to your hotel.
Tips:
- Belém is mostly flat, but its sights are farther apart than they look on a map.
- If touring the monastery matters to you, check current opening arrangements and book through the official site.
Day 3 — A hilltop view without the climb
- Morning: Take a taxi to Miradouro de São Pedro de Alcântara. Enjoy the panorama from the upper terrace, with time to sit and take it all in.
- Lunch: Take another short taxi ride to Chiado for a leisurely lunch. Try arroz de marisco, a brothy seafood rice, if you both enjoy shellfish.
- Afternoon: Have a coffee and browse one or two nearby shops, or head back for a rest.
- Evening: Finish with a fado dinner if traditional Portuguese singing appeals. Choose a venue with easy taxi access and an early performance; otherwise, make your final evening a quiet dinner with a river view.
Tips:
- Ask your driver for the closest practical drop-off to the viewpoint, and use taxis between neighbourhoods rather than tackling the hills.
- For fado, reserve ahead and ask about steps at the entrance and the performance finish time.
Where to stay: A hotel in Baixa near Praça do Comércio, with a lift and taxi access close to the entrance, would make this itinerary especially comfortable.
OpenAI GPT 5.5 About 20 s · 431 words Day 1: Baixa, Chiado & a Sunset View
Morning:
Start in Baixa, Lisbon’s flatter downtown area. Stroll around Praça do Comércio by the river, then take your time along the elegant streets toward Rossio Square.
Lunch:
Have a relaxed seafood lunch at Cervejaria Ramiro or a traditional meal at Solar dos Presuntos.
Afternoon:
Take the Santa Justa Lift or a taxi up toward Chiado for coffee and pastries. Visit Bertrand Bookshop or sit at a café near Largo do Chiado.
Evening:
Enjoy the view from Miradouro de São Pedro de Alcântara, then have dinner nearby in Bairro Alto or Príncipe Real.
Tips:
- Use taxis or Bolt/Uber for uphill sections; they’re inexpensive and save energy.
- Go to viewpoints by car when possible, then walk only short distances.
Day 2: Belém, Monuments & Pastéis de Nata
Morning:
Take a taxi or tram to Belém, a mostly flat and easy area by the river. Visit the Jerónimos Monastery and see the Belém Tower from the outside.
Lunch:
Eat at O Prado or try a riverside restaurant such as À Margem for a relaxed meal with views.
Afternoon:
Stop at Pastéis de Belém for the famous custard tarts. If you enjoy museums, visit the MAAT or the Coach Museum, both manageable and not too strenuous.
Evening:
Return to central Lisbon and have dinner in Cais do Sodré or Time Out Market if you want lots of food choices in one place.
Tips:
- Belém is one of the best areas for avoiding steep hills.
- Visit Jerónimos early to avoid the longest lines.
Day 3: Alfama Views Without the Climb & a Special Dinner
Morning:
Take a taxi up to Castelo de São Jorge or directly to Miradouro das Portas do Sol. Enjoy the classic Lisbon views over Alfama and the river without walking uphill.
Lunch:
Have lunch in Alfama at a small traditional restaurant, or take a taxi down to Praça do Comércio for an easier, flatter option.
Afternoon:
Ride the scenic Tram 28 for part of the route if it’s not too crowded, or choose a private tuk-tuk tour for a more comfortable way to see the old neighborhoods.
Evening:
Book a memorable final dinner:
- Bairro do Avillez for modern Portuguese food
- Alma or Belcanto for a Michelin-starred experience
- A gentle Fado dinner in Alfama or Chiado if you’d enjoy music
Tips:
- Alfama is beautiful but very hilly and uneven, so use taxis between stops.
- For Tram 28, board early in the day or skip it if the line is long.
Winner: GPT 6 Astra. Both avoided the steep hills with taxis. GPT 6 Astra's plan felt made for a couple in their sixties: one outing a day, a rest before dinner, shoes with grip for the slippery paving and a hotel with a lift. GPT 5.5 named many more restaurants, which food lovers may prefer.
Scorecard
| Test | Winner |
|---|---|
| 1. A condolence card | Tie |
| 2. Understanding a confusing letter | GPT 6 Astra |
| 3. Spotting a scam | Tie |
| 4. A firm but polite complaint | Tie |
| 5. Dinner from what's in the fridge | GPT 6 Astra |
| 6. Explaining money in plain words | GPT 5.5 |
| 7. A bedtime story for a grandchild | Tie |
| 8. Planning a short trip | GPT 6 Astra |
| Total | GPT 6 Astra 3 · GPT 5.5 1 · 4 ties |
What’s new in GPT 6 Astra
GPT 6 Astra came out on September 4, 2026. GPT 5.5 came out on April 24, 2026. The newer model also knows about more recent things: up to April 2026, against December 2025 for GPT 5.5. For news and prices, both can search the web in chatmodel anyway.
In everyday use, the difference you’ll notice is this: GPT 6 Astra adds more careful details, and it takes longer to answer. In our test the answers weren’t much longer (about 210 words against about 180), but they took about five times as long to arrive.
What it costs, in plain words
In chatmodel, GPT 6 Astra and GPT 5.5 are both included in one plan, Pro, together with Claude, Gemini, Grok and many other models. Switching from one to the other costs you nothing extra. You can also start for free with Instant. See the current prices on the pricing page.
Can you trust what they say?
Both did well here: we didn’t find a wrong fact in any of the 16 answers. That doesn’t mean they never make mistakes. An answer can sound sure of itself even when a small detail is wrong.
A few simple habits help:
- Double-check anything you’ll act on: phone numbers, web addresses, dates and amounts.
- 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 used the same 8 everyday tasks as our ChatGPT vs Claude test: a condolence card, an insurance letter, a scam email, a complaint, dinner, a money question, a bedtime story and a trip. We gave GPT 6 Astra and GPT 5.5 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, and answer times depend on how busy the service is, so treat the winners as a guide, not a final score. To see how GPT 6 Astra does against Anthropic’s model, read GPT 6 Astra vs Claude Fable 5.1.
What changed
- First test: GPT 6 Astra and GPT 5.5, 8 everyday tasks, one try each.