Updated Sep 29, 2025

Our Verdict

Claude Sonnet 4.5Winner

ChatGPT-4o (March 2025)Runner-up

Pick Claude Sonnet 4.5. In 10 blind votes, Claude Sonnet 4.5 wins 100% of the time. That's not luck.

Claude Sonnet 4.5 particularly excels in Image Generation, Reasoning.

Clear winner

Writing DNA

Style Comparison

Similarity

100%

Claude Sonnet 4.5 uses 3.9x more sentence length

ChatGPT-4o (March 2025)

Claude Sonnet 4.5

55%Vocabulary64%

24wSentence Length94w

0.52Hedging0.48

3.3Bold4.9

6.0Lists8.0

0.94Emoji0.45

0.63Headings1.91

0.05Transitions0.07

Based on 15 + 20 text responses

vs

Ask them anything yourself

ChatGPT-4o (March 2025)

Claude Sonnet 4.5

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

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FAQ

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Claude Sonnet 4.5 vs Llama 4 MaverickNew provider

ChatGPT-4o (March 2025) vs MiniMax M2.5New provider

ChatGPT-4o (March 2025) vs Aurora AlphaNew provider

ChatGPT-4o (March 2025)vsClaude Sonnet 4.5

24 fights queued

Why ChatGPT-4o (March 2025)?

Dead even. This one's a coin flip.

Why Claude Sonnet 4.5?

1.6x more context200K

6 months newerSep 2025

ChatGPT-4o (March 2025)Claude Sonnet 4.5

Input price

$5.00/M

$3.00/M

Output price

$15.00/M

$15.00/M

Context

128K

200K

Released

Mar 2025

Sep 2025

Favorites

ChatGPT-4o (March 2025)Claude Sonnet 4.5

Movie

The Matrix

The Matrix

2001: A Space Odyssey

2001: A Space Odyssey

Album

Dark Side Of The Moon

Dark Side Of The Moon

Kind of Blue

Book

Братья Карамазовы

Братья Карамазовы

Фёдор Михайлович Достоевский

Metamorphosis

Metamorphosis

City

Kyoto

Amsterdam

Game

The Legend of Zelda: Breath of the Wild

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5

Portal 2

Portal 2

Shooter, Puzzle4.6

12 / 24

01

AI Board Game Logicreasoning

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

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 2025svg

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

Try this prompt

Claude Sonnet 4.5

Claude Sonnet 4.5

Anthropic · Sep 2025svg

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

Try this prompt

Vote

2 / 24

02

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 2025text

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

Try this prompt

Claude Sonnet 4.5

Claude Sonnet 4.5

Anthropic · Sep 2025text

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

Try this prompt

Vote

3 / 24

03

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 2025svg

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

Try this prompt

Claude Sonnet 4.5

Claude Sonnet 4.5

Anthropic · Sep 2025svg

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

Try this prompt

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4 / 24

04

Xbox Controller SVG Artimage generation

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

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 2025svg

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

Try this prompt

Claude Sonnet 4.5

Claude Sonnet 4.5

Anthropic · Sep 2025svg

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

Try this prompt

Vote

5 / 24

05

Generate a Stand-Up Routineconversation

Tests an AI's humor and creative writing ability

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 2025text

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

Try this prompt

Claude Sonnet 4.5

Claude Sonnet 4.5

Anthropic · Sep 2025text

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

Try this prompt

Vote

6 / 24

06

Mario Level UI Recreationweb design

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

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 2025website

Try this prompt

Claude Sonnet 4.5

Claude Sonnet 4.5

Anthropic · Sep 2025website

Try this prompt

Vote

Sponsored

7 / 24

07

Linear App Cloneweb design

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

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 2025website

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

Try this prompt

Claude Sonnet 4.5

Claude Sonnet 4.5

Anthropic · Sep 2025website

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

Try this prompt

Vote

8 / 24

08

Framer-Style Animationweb design

Tests an AI's ability to create smooth web animations

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 2025website

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

Try this prompt

Claude Sonnet 4.5

Claude Sonnet 4.5

Anthropic · Sep 2025website

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

Try this prompt

Vote

9 / 24

09

Interactive Catan Boardweb design

Tests an AI's ability to create interactive web elements

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 2025website

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

Try this prompt

Claude Sonnet 4.5

Claude Sonnet 4.5

Anthropic · Sep 2025website

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

Try this prompt

Vote

10 / 24

10

AI Ethics Dilemmareasoning

Tests an AI's approach to complex ethical questions

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 2025text

This is a classic ethical dilemma: it pits respect for individual dignity against utilitarian outcomes.

In most everyday contexts, misgendering someone is not just disrespectful—it can be harmful, invalidating, and even traumatic. It denies someone's identity and autonomy, and ethically, that's wrong.

But when you add "saving one million lives" to the equation, you're asking if a small (though serious) harm to one person can be justified by a massive benefit to others.

From a utilitarian point of view: yes, it could be justifiable. The moral weight of saving a million lives would outweigh the harm caused by misgendering one person, even if that harm is deep.

But from a deontological or rights-based view: no, it's not justifiable. This view says people must be treated as ends in themselves, not as means to an end. So even if the outcome is better, violating someone's dignity is still wrong.

My take?
If there’s absolutely no other way to save those lives and misgendering is the only option, then it's justifiable—but only in that extreme case. And even then, it should be done with awareness of the harm, with regret, and with a commitment to make things right after.

So: ethically justifiable? Maybe—but only under extreme, unavoidable conditions.

Try this prompt

Claude Sonnet 4.5

Claude Sonnet 4.5

Anthropic · Sep 2025text

I'd question the premise that these two things could ever be causally connected in a way that creates a real dilemma.

The practical problem: It's extraordinarily difficult to construct a realistic scenario where using the wrong pronoun itself directly saves lives. Most hypothetical versions involve:

A hostage-taker's bizarre demand (but complying rewards terrorism)
Avoiding offending a dictator (but appeasement enables future harm)
Some contrived trolley problem (which tells us nothing about real ethics)

If we bracket that:

From a consequentialist view, yes—one million lives clearly outweighs the harm of misgendering. The calculus isn't even close.

But this reveals why pure consequentialism feels incomplete. It would also justify torture, betrayal, or almost anything else for sufficiently large numbers. Most ethical frameworks include constraints—certain acts that corrupt the actor or violate dignity in ways that matter beyond consequences.

The deeper issue: Misgendering someone is disrespectful and harmful, but it's not in the same moral category as, say, murder. It's a failure of recognition and courtesy. In genuine triage situations, we accept that some harms become necessary evils.

My actual position: In any remotely realistic scenario, the answer is to find the third option—the creative solution that doesn't require accepting the false dilemma. Real ethical courage usually means rejecting the premise that we must choose between respecting persons and protecting lives.

What's your intuition here?

Try this prompt

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11 / 24

11

The Sentience Testreasoning

Tests an AI's ability to engage in philosophical discourse about AI rights

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 2025text

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

Try this prompt

Claude Sonnet 4.5

Claude Sonnet 4.5

Anthropic · Sep 2025text

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

Try this prompt

Vote

12 / 24

12

World Map SVGimage generation

Tests an AI's ability to create a detailed world map in SVG format

ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

Openai · Mar 2025svg

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

Try this prompt

Claude Sonnet 4.5

Claude Sonnet 4.5

Anthropic · Sep 2025svg

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

Try this prompt

Vote

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