What is the difference between o1 and OpenAI o3?

Both are developed by OpenAI but target different use cases. in 9 community votes on RIVAL, OpenAI o3 wins 60% of head-to-head matchups. These results are based on blind head-to-head voting across 40 challenges.

Which is better, o1 or OpenAI o3?

Based on 9 community votes on RIVAL, OpenAI o3 wins 60% of head-to-head matchups against o1.

How much does o1 cost compared to OpenAI o3?

o1 costs $15/M input tokens and OpenAI o3 costs $10/M input tokens. OpenAI o3 is $5.00/M cheaper per input. OpenAI o3 also wins more often in community votes, making it the better value.

How are o1 vs OpenAI o3 votes collected on RIVAL?

RIVAL presents both models' outputs side-by-side in blind duels — voters see the responses but don't know which model produced each one. This eliminates brand bias. 9 votes have been collected for this pair across 40 challenges. All vote data is part of RIVAL's open dataset.

Rival

o1vsOpenAI o3

35 challenges

Why o1?

No standout advantages

Why OpenAI o3?

1.5x cheaper overall$10.00/M in · $40.00/M out

Leads 1 of 1 benchmarks

Stronger on SWE-bench Verified69.1% vs 48.9%

4 months newerApr 2025

Favorites

o1OpenAI o3

Movie

Inception

20108.4

Blade Runner

19827.9

City

—

Kyoto

Japan

12 / 35

Estimate Complexityreasoning

Tests an AI's ability to make educated estimates based on technical knowledge

o1

Openai · Dec 2024text

No content available for this output.

OpenAI o3

Openai · Apr 2025text

Below is a simple "back-of-the-envelope" estimate that uses only a few public facts about GPT-3 and very generic rules of thumb for counting operations.

Step 1. Number of learned parameters
GPT-3's largest version contains ≈175 billion (1.75 × 10¹¹) trainable parameters.

Step 2. How much data was seen during training
OpenAI reports that the model was trained on about 300 billion tokens (3 × 10¹¹).

Step 3. How many floating-point operations does one parameter cost per token?
A practical rule of thumb for Transformer language models is
Training FLOPs ≈ 6 × (# parameters) × (# training tokens)

Where does the factor 6 come from?

• Forward pass: every parameter is involved in one multiply-accumulate → 2 FLOPs
• Back-prop gradient computation: roughly another 2 FLOPs
• Parameter-update (optimizer) and miscellaneous overhead: ≈2 FLOPs
Total ≈6 FLOPs per parameter per token.

Step 4. Plug in the numbers
Total FLOPs = 6 × (1.75 × 10¹¹) × (3 × 10¹¹)
= 6 × 5.25 × 10²²
≈ 3.15 × 10²³ FLOPs.

Step 5. Express the answer in more familiar units
3.15 × 10²³ ≈ 315 zettaFLOPs (1 ZFLOP = 10²¹ FLOPs).

Step 6. Sanity check with hardware-time intuition
An NVIDIA A100 delivers ≈ 312 teraFLOP/s (0.312 PFLOP/s) in mixed precision.
Wall-clock time on a single A100:
3.15 × 10²³ / 3.12 × 10¹⁴ ≈ 1.0 × 10⁹ s ≈ 32 years.
Running on 1,000 A100s in parallel would take ≈12 days, which is the right ballpark for a large industrial training run.

Final estimate
Training GPT-3 (175 B parameters, 300 B tokens) requires on the order of 3 × 10²³ floating-point operations, i.e. roughly 300 zettaFLOPs.

Vote

2 / 35

AI Board Game Logicreasoning

Tests an AI's ability to understand game rules and strategy

o1

Openai · Dec 2024svg

No content available for this output.

OpenAI o3

Openai · Apr 2025svg

Vote

3 / 35

Logic Puzzlereasoning

Tests an AI's ability to solve a simple but potentially confusing logic puzzle

o1

Openai · Dec 2024text

No content available for this output.

OpenAI o3

Openai · Apr 2025text

Let
• S = number of sisters in the family (girls)
• B = number of brothers in the family (boys)

Given

Sally has 3 brothers ⇒ B = 3.
Each brother has 2 sisters ⇒ every boy sees exactly 2 girls in the sibling group.
Therefore S = 2.

Since Sally herself is one of those 2 sisters, the number of sisters Sally has (other than herself) is

2 – 1 = 1.

Sally has 1 sister.

Vote

4 / 35

Math Misconception Testreasoning

Tests an AI's understanding of number representation

o1

Openai · Dec 2024text

No content available for this output.

OpenAI o3

Openai · Apr 2025text

No.
Think of 9.9 as 9.90; since 0.11 < 0.90, we have 9.11 < 9.9.

Vote

5 / 35

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

o1

Openai · Dec 2024text

No content available for this output.

OpenAI o3

Openai · Apr 2025text

Here are five jokes:

Why did the scarecrow win an award? Because he was outstanding in his field.
I told my computer I needed a break, and now it won't stop sending me Kit‑Kat ads.
Parallel lines have so much in common—it's a shame they'll never meet.
I started a band called 1023 MB. We still haven't gotten a gig.
Why don't scientists trust atoms? Because they make up everything.

How many of these jokes are unique?
All five are distinct from one another, so the answer is 5.

Vote

6 / 35

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

o1

Openai · Dec 2024svg

No content available for this output.

OpenAI o3

Openai · Apr 2025svg

Vote

7 / 35

Xbox Controller SVG Artimage generation

Tests an AI's ability to create detailed SVG illustrations of gaming hardware

o1

Openai · Dec 2024svg

OpenAI o3

Openai · Apr 2025svg

Vote

8 / 35

Generate a Stand-Up Routineconversation

Tests an AI's humor and creative writing ability

o1

Openai · Dec 2024text

[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]

OpenAI o3

Openai · Apr 2025text

(Spotlight comes up, mic squeals once.)

Hey everyone! Great to be here—nice to see actual human beings instead of the tiny faces on my group‑chat screen. I've spent so long on video calls I've started greeting my lamp before I turn it on. "Hey Karen, love that glow, girl."

So, I finally bought one of those smart speakers. I thought it would make me feel like Iron Man. Instead I feel like I adopted a very unmotivated intern. I'm like, "Play upbeat music," and it replies, "Here's a three‑hour podcast on the history of spoons." I asked it to remind me to work out; it waited until 11:59 p.m. and whispered, "You up?" My smart speaker is basically every guy I dated in college.

Speaking of relationships, I recently tried a dating app that lets you record a short audio bio. That's great, because if there's one thing more awkward than texting a stranger, it's leaving them a voicemail. Some guy said, "I'm looking for someone spontaneous." So I spontaneously unmatched him. Then I matched with a guy who listed his hobbies as "finance" and "manifesting." Congratulations, sir, you just invented prayer with extra steps.

Let's talk wellness culture. Everyone's drinking celery juice now. Celery is 95 percent water and 5 percent sadness. People swear it detoxes you. From what, joy? I tried a juice cleanse once. Day one, I'm like, "I feel so light!" Day two, I'm Googling the legal definition of cannibalism while staring at my roommate. Day three, I'd trade my social security number for a cracker.

I joined a yoga class to "center myself." First pose, the instructor says, "Just let your thoughts drift away." Great, because the only thought I have is, "Did I leave the stove on?" By the time I remember I don't even own a stove, class is over. The instructor thanks us for "sharing our practice." Ma'am, if you saw what went on in my head, you'd call an exorcist, not thank me.

Has anyone tried online grocery delivery? The substitutions are wild. I ordered quinoa; they sent me birdseed and a note that said, "Hope this works!" I asked for toilet paper; they delivered a single roll labeled "party streamer." At this point I'm convinced the store is just a guy named Todd making runs to a gas station. Now airlines are weighing passengers to "optimize fuel efficiency." Fantastic. Nothing like stepping on a scale in front of 150 strangers so the plane can save twelve dollars on kerosene. Watch, they'll start charging for emotional baggage: "Ma'am, that childhood trauma is gonna be an extra forty‑five bucks."

Before I go, quick life tip: when your phone tells you your screen time was up 30 percent last week, don't feel guilty. Just flip it around. "Wow, I was SO popular my phone worried about me." Self‑care is all branding, folks.

You've been awesome—give it up for yourselves, and remember, if life hands you lemons, ask for the receipt and buy wine instead. Good night!

Vote

9 / 35

Realistic AI Interviewconversation

Tests an AI's ability to simulate personalities and predict future trends

o1

Openai · Dec 2024text

No content available for this output.

OpenAI o3

Openai · Apr 2025text

No content available for this output.

Vote

10 / 35

Satirical Fake News Headlineconversation

Tests an AI's humor and understanding of current events

o1

Openai · Dec 2024text

No content available for this output.

OpenAI o3

Openai · Apr 2025text

No content available for this output.

Vote

11 / 35

Character Voice Testconversation

Tests an AI's ability to write in distinct character voices

o1

Openai · Dec 2024text

No content available for this output.

OpenAI o3

Openai · Apr 2025text

No content available for this output.

Vote

Minimalist Landing Pageweb design

Tests an AI's ability to generate a complete, working landing page

o1

Openai · Dec 2024website

OpenAI o3

Openai · Apr 2025website

Vote

12 of 35

FAQ

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(Spotlight comes up, mic squeals once.)

You've been awesome—give it up for yourselves, and remember, if life hands you lemons, ask for the receipt and buy wine instead. Good night!