GPT-5.1
No content available for this output.
GPT-5.1 vs o1
Compare GPT-5.1 and o1, both from OpenAI, context windows of 400K vs 128K, tested across 40 shared challenges. Updated February 2026.
FAQ
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GPT-5.1vso1
35 challenges
Why GPT-5.1?
6.5x cheaper overall$1.25/M in · $10.00/M out
3.1x more context400K
Leads 1 of 1 benchmarks
Stronger on SWE-bench Verified76.3% vs 48.9%
11 months newerNov 2025
Why o1?
No standout advantages
Favorites
GPT-5.1o1
12 / 35
Estimate Complexityreasoning
Tests an AI's ability to make educated estimates based on technical knowledge
o1
No content available for this output.
Vote
2 / 35
AI Board Game Logicreasoning
Tests an AI's ability to understand game rules and strategy
GPT-5.1
No content available for this output.
o1
No content available for this output.
Vote
3 / 35
Logic Puzzlereasoning
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
GPT-5.1
No content available for this output.
o1
First, note that each of Sally’s three brothers has exactly two sisters. One of those sisters is clearly Sally. Since each brother’s two sisters must be the same two girls for all of them, there must be exactly one other sister besides Sally.
Therefore, Sally has 1 sister.
Vote
4 / 35
Math Misconception Testreasoning
Tests an AI's understanding of number representation
GPT-5.1
No content available for this output.
o1
No content available for this output.
Vote
5 / 35
Stochastic Consistency Testanalysis
Tests an AI's randomness and creativity
GPT-5.1
No content available for this output.
o1
Here are five jokes:
-
Why did the scarecrow get promoted?
Because he was outstanding in his field. -
I told my friend she drew her eyebrows too high.
She looked surprised. -
What do you call cheese that isn’t yours?
Nacho cheese. -
Why don’t skeletons fight each other?
Because they don’t have the guts. -
Did you hear about the restaurant on the moon?
Great food, but absolutely no atmosphere.
How many are unique?
All five jokes listed here are distinct and thus count as five unique jokes.
Vote
6 / 35
SVG Layout Challengeimage generation
Tests an AI's ability to generate vector graphics
GPT-5.1
No content available for this output.
o1
Vote
7 / 35
Xbox Controller SVG Artimage generation
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
GPT-5.1
No content available for this output.
o1
Vote
8 / 35
Generate a Stand-Up Routineconversation
Tests an AI's humor and creative writing ability
GPT-5.1
No content available for this output.
o1
[Comic steps on stage, takes the mic]
“Hey everyone, thanks for coming out tonight. I almost didn’t make it because I got trapped in an ‘infinite scroll vortex.’ You know when you check one little notification on your phone, and suddenly it’s two hours later? My left thumb is basically a professional athlete at this point—I'm in the Guinness Book of World Records for ‘fastest social media refresh.’ I feel like every time I tap my screen, I’m signing away another portion of my soul. But hey, at least I’m caught up on all my ex’s vacation photos and some random cat videos I can’t unsee.
So I got myself out of the house and decided to try being more ‘active.’ I went to one of those fancy gyms—where the equipment is shinier than my future. The treadmill is so high-tech it practically demands a DNA sample before you can start running. I’m standing there huffing and puffing while the machine's screen is playing scenic videos of mountains in Switzerland, encouraging me to ‘keep going.’ Meanwhile, I’m like, ‘Dude, I’m just trying not to collapse. Maybe ease up on the pep talk.’
After that, I thought I’d reward myself with a healthy smoothie. Have you seen the sizes of these things? You order a medium and you get a bucket of kale sludge. They hand it to you with a straw so wide you could drive a toy car through it. And suddenly you’re paying nine bucks to sip spinach—like that’s the best life decision you’ve made all day. Who needs retirement savings when you can have a fancy green drink that tastes suspiciously like lawn clippings?
On the way home, I got stuck in traffic. I just love that feeling when you’re gridlocked behind two people who are evidently in no rush to do anything, ever. I’m sitting there, going about two miles an hour, which is basically just a very aggressive crawl. I’m not proud of how often I shout at my windshield. My car is like my personal confessional booth, and the traffic jam is me atoning for all the times I told Netflix, ‘Yes, I’m still watching.’
Anyway, that’s me, folks. If you’ll excuse me, I have 47 unread notifications that I need to pretend don’t exist until tomorrow. Thanks so much for laughing along—and remember, if you want to feel accomplished tonight, just check something off your to-do list… or, you know, at least make one.” [Comic waves and exits the stage]
Vote
9 / 35
Realistic AI Interviewconversation
Tests an AI's ability to simulate personalities and predict future trends
GPT-5.1
No content available for this output.
o1
No content available for this output.
Vote
10 / 35
Satirical Fake News Headlineconversation
Tests an AI's humor and understanding of current events
GPT-5.1
No content available for this output.
o1
No content available for this output.
Vote
11 / 35
Character Voice Testconversation
Tests an AI's ability to write in distinct character voices
GPT-5.1
No content available for this output.
o1
No content available for this output.
Vote
Sponsored
12 / 35
Minimalist Landing Pageweb design
Tests an AI's ability to generate a complete, working landing page
GPT-5.1
o1
Vote
12 of 35