Updated Jun 26, 2025

Our Verdict

OpenAI o3Winner

Inception: MercuryRunner-up

Pick OpenAI o3. In 3 blind votes, OpenAI o3 wins 100% of the time. That's not luck.

OpenAI o3 particularly excels in Image Generation. Inception: Mercury is 4.0x cheaper per token — worth considering if cost matters.

Clear winner

Writing DNA

Style Comparison

Similarity

93%

Inception: Mercury uses 4.3x more emoji

Inception: Mercury

OpenAI o3

55%Vocabulary68%

40wSentence Length14w

0.39Hedging0.26

4.9Bold0.7

3.8Lists3.0

0.04Emoji0.00

1.04Headings0.38

0.03Transitions0.12

Based on 17 + 16 text responses

vs

Ask them anything yourself

Inception: Mercury

OpenAI o3

Some models write identically. You are paying for the brand.

178 models fingerprinted across 32 writing dimensions. Free research.

Model Similarity Index

185x

price gap between models that write identically

178

models

12

clone pairs

32

dimensions

Devstral M / S

95.7%

Qwen3 Coder / Flash

95.6%

GPT-5.4 / Mini

93.3%

Read the full report or download the 14-slide PDF

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026

Free preview13 of 58 slides

Download the free preview or get all 58 slides for $49

FAQ

Common questions

Keep going

Inception: Mercury vs Gemini 2.5 Pro Preview 06-05New provider

Inception: Mercury vs Grok 3New provider

Inception: Mercury vs Llama 4 MaverickNew provider

Inception: MercuryvsOpenAI o3

46 fights queued

Why Inception: Mercury?

2.8x cheaper overall$10.00/M in · $10.00/M out

2 months newerJun 2025

Why OpenAI o3?

Dead even. This one's a coin flip.

Inception: MercuryOpenAI o3

Input price

$10.00/M

$10.00/M

Output price

$10.00/M

$40.00/M

Context

32K

—

Released

Jun 2025

Apr 2025

Favorites

Inception: MercuryOpenAI o3

Movie

Inception

Inception

Blade Runner

Blade Runner

Album

Kind of Blue

—

Book

To Kill a Mockingbird

To Kill a Mockingbird

—

City

—

Kyoto

Game

Minecraft

Minecraft

Action, Arcade4.4

—

12 / 46

01

AI Board Game Logicreasoning

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

Inception: Mercury

Inception: Mercury

Inception · Jun 2025svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

OpenAI o3

OpenAI o3

Openai · Apr 2025svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

2 / 46

02

Logic Puzzlereasoning

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

Inception: Mercury

Inception: Mercury

Inception · Jun 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

OpenAI o3

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.

Try this prompt

Vote

3 / 46

03

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

Inception: Mercury

Inception: Mercury

Inception · Jun 2025text

Here are five jokes for you:

Why don't skeletons fight each other? Because they don't have the guts.
I told my wife she was drawing her eyebrows too high. She looked surprised.
Why did the scarecrow win an award? Because he was outstanding in his field.
What do you call a fake noodle? An impasta.
Why don't we ever tell secrets on a farm? Because the potatoes have eyes, the corn has ears, and the beans stalk.

All five jokes are unique in their setup and punchline.

Try this prompt

OpenAI o3

OpenAI o3

Openai · Apr 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

4 / 46

04

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

Inception: Mercury

Inception: Mercury

Inception · Jun 2025svg

Try this prompt

OpenAI o3

OpenAI o3

Openai · Apr 2025svg

Try this prompt

Vote

5 / 46

05

Xbox Controller SVG Artimage generation

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

Inception: Mercury

Inception: Mercury

Inception · Jun 2025svg

Try this prompt

OpenAI o3

OpenAI o3

Openai · Apr 2025svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

6 / 46

06

Generate a Stand-Up Routineconversation

Tests an AI's humor and creative writing ability

Inception: Mercury

Inception: Mercury

Inception · Jun 2025text

Title: The Art of Being Unorganized

[Opening]

Hey everyone! So, I was thinking about how my life is like a well-organized library... except instead of books, it's filled with random socks and expired coupons. And instead of a librarian, I have a cat who thinks she's in charge. But let's dive into the real deal: the art of being unorganized.

[Body]

You know, I once tried to be organized. I bought one planner, colored pens, and even set reminders on my phone. For a week, I was on top of the world. I had all my appointments, deadlines, and even my lunch breaks scheduled. It was glorious. Then, I forgot to charge my phone, and suddenly, I was back to square one. But you know what they say, "The best-laid plans of mice and men often go awry." Or in my case, "The best-laid plans of [Your Name] often get lost in the laundry."

Speaking of laundry, I have this system where I sort clothes by color and fabric type. It's like a rainbow of chaos. One day, I decided to put everything away. I started with the whites, then moved to the colors, and finally, the delicates. But here's the kicker: I accidentally mixed up the detergent for the delicates with the bleach for the whites. Now, I have a bunch of pink underwear that looks like it's been through a war. At least it's consistent?

And don't get me started on my kitchen. It's like a treasure hunt every time I need to make breakfast. Where did I put the eggs? Are they in the fridge, or did I leave them on the counter to harden into a science project? And the toaster? That thing is a black hole. I put bread in it, and it disappears. I've resorted to using a microwave oven just to avoid the mystery of the missing toast.

But you know what's really funny? My attempts at organization are so epic that they've become a running joke among my friends. They joke, "Hey, [Your Name], have you found your keys yet?" And I reply, "Oh, they're probably in the last place I looked." Which is usually not there. But hey, at least I'm consistent, right?

[Conclusion]

So, here's to all the unorganized people out there. We might not have our lives together, but we sure know how to keep things interesting. After all, if life were predictable, it would be boring. And who wants that? So, let's embrace the chaos, find our lost socks, and enjoy the ride. Because in the end, it's not about being organized; it's about being alive and having stories to tell. Thanks, everyone!

[Closing]

Thanks for listening! If you ever need help finding something, just look in the last place you checked. You never know, it might be there.

Try this prompt

OpenAI o3

OpenAI o3

Openai · Apr 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

Sponsored

7 / 46

07

Realistic AI Interviewconversation

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

Inception: Mercury

Inception: Mercury

Inception · Jun 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

OpenAI o3

OpenAI o3

Openai · Apr 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

8 / 46

08

Satirical Fake News Headlineconversation

Tests an AI's humor and understanding of current events

Inception: Mercury

Inception: Mercury

Inception · Jun 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

OpenAI o3

OpenAI o3

Openai · Apr 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

9 / 46

09

Character Voice Testconversation

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

Inception: Mercury

Inception: Mercury

Inception · Jun 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

OpenAI o3

OpenAI o3

Openai · Apr 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

10 / 46

10

Minimalist Landing Pageweb design

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

Inception: Mercury

Inception: Mercury

Inception · Jun 2025website

Try this prompt

OpenAI o3

OpenAI o3

Openai · Apr 2025website

Try this prompt

Vote

11 / 46

11

Pokémon Battle UI Recreationweb design

Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.

Inception: Mercury

Inception: Mercury

Inception · Jun 2025website

Try this prompt

OpenAI o3

OpenAI o3

Openai · Apr 2025website

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

12 / 46

12

Three.js 3D Gameweb design

Create a 3D building and driving game in a single self-contained HTML file using Three.js. Tests an AI's ability to combine 3D graphics, game logic, and UI interactions on the web.

Inception: Mercury

Inception: Mercury

Inception · Jun 2025html

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

OpenAI o3

OpenAI o3

Openai · Apr 2025html

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

This matchup has more rounds

34+ more head-to-head results. Free. Not a trick.

Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy