Updated Mar 25, 2025

Our Verdict

Gemini 2.5 Pro ExperimentalWinner

o1Runner-up

Pick Gemini 2.5 Pro Experimental. In 8 blind votes, Gemini 2.5 Pro Experimental wins 100% of the time. That's not luck.

Gemini 2.5 Pro Experimental particularly excels in Web Design, Image Generation, Reasoning. Gemini 2.5 Pro Experimental is 30x cheaper per token — worth considering if cost matters.

Clear winner

Writing DNA

Style Comparison

Similarity

99%

o1 uses 2.3x more transitions

Gemini 2.5 Pro Experimental

o1

54%Vocabulary64%

15wSentence Length16w

0.35Hedging0.76

5.6Bold5.0

3.9Lists2.6

0.00Emoji0.00

0.39Headings0.44

0.17Transitions0.40

Based on 18 + 13 text responses

vs

Ask them anything yourself

Gemini 2.5 Pro Experimental

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

o1 vs Llama 4 MaverickNew provider

o1 vs Grok 3New provider

o1 vs Claude Opus 4New provider

Gemini 2.5 Pro Experimentalvso1

38 fights queued

Why Gemini 2.5 Pro Experimental?

26.3x cheaper overall$1.00/M in · $2.00/M out

7.8x more context1.0M

Stronger on SWE-bench Verified63.8% vs 48.9%

4 months newerMar 2025

Why o1?

Leads 2 of 3 benchmarks

Stronger on MATH96.4% vs 83.5%

Gemini 2.5 Pro Experimentalo1

Input price

$1.00/M

$15.00/M

Output price

$2.00/M

$60.00/M

Context

1.0M

128K

Released

Mar 2025

Dec 2024

Benchmarks3 common

90.0%

91.8%+2%

83.5%

96.4%+13.4%

SWE-bench Verified

63.8%+23.4%

48.9%

Favorites

Gemini 2.5 Pro Experimentalo1

Movie

Khiam 2000-2007

Khiam 2000-2007

Inception

Inception

Album

The Dark Side of the Moon

The Dark Side of the Moon

—

Book

The Hitchh

—

City

Kyoto

—

Game

Portal 2

Portal 2

Shooter, Puzzle4.6

—

12 / 38

01

AI Board Game Logicreasoning

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

Gemini 2.5 Pro Experimental

Gemini 2.5 Pro Experimental

Google · Mar 2025svg

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

Try this prompt

o1

Openai · Dec 2024svg

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

Try this prompt

Vote

2 / 38

02

Math Misconception Testreasoning

Tests an AI's understanding of number representation

Gemini 2.5 Pro Experimental

Gemini 2.5 Pro Experimental

Google · Mar 2025text

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

Try this prompt

o1

Openai · Dec 2024text

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

Try this prompt

Vote

3 / 38

03

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

Gemini 2.5 Pro Experimental

Gemini 2.5 Pro Experimental

Google · Mar 2025text

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

Try this prompt

o1

Openai · Dec 2024text

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

Try this prompt

Vote

4 / 38

04

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

Gemini 2.5 Pro Experimental

Gemini 2.5 Pro Experimental

Google · Mar 2025svg

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

Try this prompt

o1

Openai · Dec 2024svg

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

Try this prompt

Vote

5 / 38

05

Xbox Controller SVG Artimage generation

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

Gemini 2.5 Pro Experimental

Gemini 2.5 Pro Experimental

Google · Mar 2025svg

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

Try this prompt

o1

Openai · Dec 2024svg

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

Try this prompt

Vote

6 / 38

06

Generate a Stand-Up Routineconversation

Tests an AI's humor and creative writing ability

Gemini 2.5 Pro Experimental

Gemini 2.5 Pro Experimental

Google · Mar 2025text

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

Try this prompt

o1

Openai · Dec 2024text

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

Try this prompt

Vote

Sponsored

7 / 38

07

Realistic AI Interviewconversation

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

Gemini 2.5 Pro Experimental

Gemini 2.5 Pro Experimental

Google · Mar 2025text

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

Try this prompt

o1

Openai · Dec 2024text

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

Try this prompt

Vote

8 / 38

08

Satirical Fake News Headlineconversation

Tests an AI's humor and understanding of current events

Gemini 2.5 Pro Experimental

Gemini 2.5 Pro Experimental

Google · Mar 2025text

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

Try this prompt

o1

Openai · Dec 2024text

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

Try this prompt

Vote

9 / 38

09

Minimalist Landing Pageweb design

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

Gemini 2.5 Pro Experimental

Gemini 2.5 Pro Experimental

Google · Mar 2025website

Try this prompt

o1

Openai · Dec 2024website

Try this prompt

Vote

10 / 38

10

Pokémon Battle UI Recreationweb design

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

Gemini 2.5 Pro Experimental

Gemini 2.5 Pro Experimental

Google · Mar 2025website

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

Try this prompt

o1

Openai · Dec 2024website

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

Try this prompt

Vote

11 / 38

11

Mario Level UI Recreationweb design

Recreate an interactive, classic Mario level in a single HTML file.

Gemini 2.5 Pro Experimental

Gemini 2.5 Pro Experimental

Google · Mar 2025website

Try this prompt

o1

Openai · Dec 2024website

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

Try this prompt

Vote

12 / 38

12

Linear App Cloneweb design

Tests an AI's ability to replicate an existing UI with Tailwind CSS

Gemini 2.5 Pro Experimental

Gemini 2.5 Pro Experimental

Google · Mar 2025website

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

Try this prompt

o1

Openai · Dec 2024website

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

Try this prompt

Vote

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