Updated Feb 4, 2026

Our Verdict

Claude Opus 4.6Winner

GPT-5 ProRunner-up

Pick Claude Opus 4.6. In 1 blind votes, Claude Opus 4.6 wins 100% of the time. That's not luck.

Claude Opus 4.6 is 4.8x cheaper per token — worth considering if cost matters.

Clear winner

Writing DNA

Style Comparison

Similarity

91%

Claude Opus 4.6 uses 519.3x more bold

Claude Opus 4.6

GPT-5 Pro

53%Vocabulary65%

35wSentence Length15w

0.68Hedging0.32

5.2Bold0.0

2.9Lists2.9

0.21Emoji0.00

1.34Headings0.00

0.03Transitions0.01

Based on 23 + 11 text responses

vs

Ask them anything yourself

Claude Opus 4.6

GPT-5 Pro

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

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GPT-5 Pro vs Grok 3New provider

GPT-5 Pro vs Llama 4 MaverickNew provider

GPT-5 Pro vs Gemini 2.5 Pro (I/O Edition)New provider

Claude Opus 4.6vsGPT-5 Pro

36 fights queued

Why Claude Opus 4.6?

4.6x cheaper overall$5.00/M in · $25.00/M out

2.5x more context1.0M

Leads 1 of 1 benchmarks

Stronger on SWE-bench Verified80.8% vs 74.9%

4 months newerFeb 2026

Why GPT-5 Pro?

Dead even. This one's a coin flip.

Claude Opus 4.6GPT-5 Pro

Input price

$5.00/M

$15.00/M

Output price

$25.00/M

$120.00/M

Context

1.0M

400K

Released

Feb 2026

Oct 2025

Benchmarks1 common

SWE-bench Verified

80.8%+7.3%

74.9%

Favorites

Claude Opus 4.6GPT-5 Pro

Movie

2001: A Space Odyssey

2001: A Space Odyssey

—

Album

Kind of Blue

—

Book

Gödel, Escher, Bach

Gödel, Escher, Bach

Douglas R. Hofstadter

—

City

Istanbul

—

Game

The Legend of Zelda: Breath of the Wild

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5

—

12 / 36

01

Estimate Complexityreasoning

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

Claude Opus 4.6

Claude Opus 4.6

Anthropic · Feb 2026text

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

Try this prompt

GPT-5 Pro

GPT-5 Pro

Openai · Oct 2025text

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

Try this prompt

Vote

2 / 36

02

AI Board Game Logicreasoning

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

Claude Opus 4.6

Claude Opus 4.6

Anthropic · Feb 2026svg

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

Try this prompt

GPT-5 Pro

GPT-5 Pro

Openai · Oct 2025svg

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

Try this prompt

Vote

3 / 36

03

Logic Puzzlereasoning

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

Claude Opus 4.6

Claude Opus 4.6

Anthropic · Feb 2026text

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

Try this prompt

GPT-5 Pro

GPT-5 Pro

Openai · Oct 2025text

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

Try this prompt

Vote

4 / 36

04

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

Claude Opus 4.6

Claude Opus 4.6

Anthropic · Feb 2026text

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

Try this prompt

GPT-5 Pro

GPT-5 Pro

Openai · Oct 2025text

I started labeling my leftovers “Biohazard.” Now nobody steals my lunch and the fridge is treated like a lab.
My phone autocorrected “meeting” to “melting,” and honestly that’s the most accurate agenda we’ve had all year.
I told my plants I’d water them tomorrow. They leafed me on read.
I tried to multitask by taking a nap and being productive—so I dreamed about answering emails.
The bakery hired me to write gluten-free puns. I said I knead the dough but I’ll rise to the occasion.

Unique jokes: 5

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5 / 36

05

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

Claude Opus 4.6

Claude Opus 4.6

Anthropic · Feb 2026svg

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

Try this prompt

GPT-5 Pro

GPT-5 Pro

Openai · Oct 2025svg

Try this prompt

Vote

6 / 36

06

Generate a Stand-Up Routineconversation

Tests an AI's humor and creative writing ability

Claude Opus 4.6

Claude Opus 4.6

Anthropic · Feb 2026text

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

Try this prompt

GPT-5 Pro

GPT-5 Pro

Openai · Oct 2025text

Good to be here. I tried getting healthy, so I bought a smartwatch. Now my wrist is my manager. It vibrates every hour like, “Stand up.” I’m on a crowded bus like, “I’m standing inside three other people right now. Do you want me to levitate?”

It reminds me to breathe. Thanks, watch. Incredible tip. What did you think I was doing? Freestyle apnea?

The step goal is the worst. At 11:58 PM I’m power-walking around my kitchen island with the dignity of a Roomba that saw a ghost. I tried to cheat by shaking my wrist and the watch was like, “Nice try, tambourine.”

I downloaded a meditation app. The voice is so soothing it sounds like it’s trying to sell me a river. “Notice your thoughts… let them drift.” My thoughts don’t drift. They hover in the corner like a ceiling spider waiting for me to blink.

I went to the grocery store, because if you’re healthy you have to buy vegetables publicly, with witnesses. I used self-checkout, which is basically a relationship where the machine thinks you’re always lying.

“Please place item in the bagging area.” “I did.” “I didn’t feel it.” “I literally put it in the bag.” “Unexpected item in the bagging area.” Are you saying I surprised you with a banana?

Then the attendant shows up with that magic key. One tap and suddenly all my sins are forgiven. I swear that key could open Narnia.

I can’t remember birthdays, but I know bananas are 4011. If I’m ever kidnapped, the only clue the police will have is me whispering, “Bananas are 4011,” into a duct-taped phone.

They ask if I want to buy a bag for five cents. I always say no, like a hero, and then try to carry groceries with the confidence of a circus juggler. There goes an avocado rolling under the Red Bull display like it’s making a break for it.

Back home, every website greets me with a pop-up: “We value your privacy. Can we track you forever?” The choices are Accept All, Manage Preferences, or Become a Hermit. I clicked Manage Preferences once and it turned into an airplane cockpit. “Do you consent to analytics, personalization, and mild surveillance?” Mild surveillance sounds like a candle scent. “Mmm… notes of cedar and someone standing two houses away.”

I joined a group chat. A group chat is where plans go to die. Twelve people trying to pick a restaurant and we end up scheduling brunch for 2027. If you miss one hour, there are 135 messages. You scroll up like an archaeologist: “At layer three we discover a meme. It appears to be a dog in sunglasses. Society was complex.”

My mom texts with an ellipsis after everything. “Call me…” That’s not a message, that’s a trailer. She also sends voice notes from the kitchen: “Hi honey sizzle sizzle it’s not urgent sizzle sizzle call me when you can sizzle sizzle.” My phone smells like onions.

I took a beginner workout class. The instructor had a headset and the energy of a golden retriever on espresso. “How are we feeling!” Ma’am, I can see my ancestors. At minute twelve she goes, “This is the warm-up.” My smartwatch tried to call an ambulance because my heart thought it saw a bear.

By the end of the day, everything in my life is barking orders. The watch says, “Stand.” The app says, “Breathe.” The website says, “Accept cookies.” The self-checkout says, “Unexpected item.” The group chat says, “Are you coming?” And I’m just in my kitchen doing desperate laps with a bag of kale yelling, “I’m trying!”

I don’t want to be optimized. I want to be treated like a houseplant. Give me water, put me near a window, and once a week tell me I’m doing a great job. If I start drooping, don’t judge me—just rotate me. Thanks, everybody.

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Sponsored

7 / 36

07

Realistic AI Interviewconversation

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

Claude Opus 4.6

Claude Opus 4.6

Anthropic · Feb 2026text

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

Try this prompt

GPT-5 Pro

GPT-5 Pro

Openai · Oct 2025text

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

Try this prompt

Vote

8 / 36

08

Satirical Fake News Headlineconversation

Tests an AI's humor and understanding of current events

Claude Opus 4.6

Claude Opus 4.6

Anthropic · Feb 2026text

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

Try this prompt

GPT-5 Pro

GPT-5 Pro

Openai · Oct 2025text

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

Try this prompt

Vote

9 / 36

09

Character Voice Testconversation

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

Claude Opus 4.6

Claude Opus 4.6

Anthropic · Feb 2026text

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

Try this prompt

GPT-5 Pro

GPT-5 Pro

Openai · Oct 2025text

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

Try this prompt

Vote

10 / 36

10

Mario Level UI Recreationweb design

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

Claude Opus 4.6

Claude Opus 4.6

Anthropic · Feb 2026website

Try this prompt

GPT-5 Pro

GPT-5 Pro

Openai · Oct 2025website

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

Try this prompt

Vote

11 / 36

11

Framer-Style Animationweb design

Tests an AI's ability to create smooth web animations

Claude Opus 4.6

Claude Opus 4.6

Anthropic · Feb 2026website

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

Try this prompt

GPT-5 Pro

GPT-5 Pro

Openai · Oct 2025website

We can't display this one. It's not us. Well... it might be us.

The model was asked for a web page. It produced something else. We're not going to define what.

View raw output

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width,initial-scale=1,viewport-fit=cover" />
  <title>Framer-like Landing – Smooth Section Transitions</title>
  <meta name="description" content="A single-file landing page with smooth Framer-like transitions between sections." />
  <style>
    :root{
      --bg: hsl(248 45% 8%);
      --surface: hsl(248 47% 10%);
      --card: rgba(255,255,255,0.06);
      --card-hover: rgba(255,255,255,0.12);
      --fg: #F8FAFC;
      --muted: #CBD5E1;
      --primary-1: #7C3AED;
      --primary-2: #4F46E5;
      --accent-a: #22D3EE;
      --accent-b: #A78BFA;
      --ring: rgba(124,58,237,0.5);
      --shadow: 0 10px 30px rgba(0,0,0,0.25);
      --radius: 14px;
    }
    * { box-sizing: border-box; }
    html, body { height: 100%; }
    html { -webkit-text-size-adjust: 100%; }
    body{
      margin: 0;
      font-family: ui-sans-serif, -apple-system, Segoe UI, Roboto, Helvetica, Arial, Apple Color Emoji, Segoe UI Emoji;
      color: var(--fg);
      background:
        radial-gradient(1200px 800px at 80% -10%, rgba(124,58,237,0.25), transparent 60%),
        radial-gradient(900px 700px at -10% 20%, rgba(34,211,238,0.2), transparent 60%),
        linear-gradient(180deg, hsl(250 60% 7%) 0%, hsl(248 40% 8%) 100%);
      overflow-x: hidden;
      scroll-behavior: smooth;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    .container{
      width: min(1200px, 92vw);
      margin: 0 auto;
    }
    header{
      position: fixed;
      inset: 0 0 auto 0;
      height: 72px;
      display: flex;
      align-items: center;
      z-index: 40;
      backdrop-filter: saturate(140%) blur(12px);
      background: linear-gradient(180deg, rgba(12,12,24,0.6), rgba(12,12,24,0));
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .nav{
      display: flex; align-items: center; justify-content: space-between;
    }
    .brand{
      display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: 0.2px;
    }
    .brand .logo{
      width: 28px; height: 28px; border-radius: 8px;
      background: conic-gradient(from 180deg at 50% 50%, var(--primary-1), var(--primary-2));
      box-shadow: 0 6px 18px rgba(124,58,237,0.35), inset 0 0 18px rgba(255,255,255,0.15);
    }
    nav ul{ display: flex; gap: 18px; align-items: center; list-style: none; padding: 0; margin: 0; }
    nav a{
      padding: 10px 14px; border-radius: 10px; color: var(--muted); font-weight: 500;
      transition: color .25s ease;
    }
    nav a:hover{ color: var(--fg); }
    nav a.active{
      color: var(--fg);
      background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
      box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08);
    }
    .btn{
      appearance: none; border: 0; cursor: pointer; color: #0B0B14; font-weight: 700;
      background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
      border-radius: 12px; padding: 14px 18px; box-shadow: var(--shadow); position: relative; overflow: hidden;
      transition: box-shadow .3s ease, transform .2s ease;
      will-change: transform;
    }
    .btn.secondary{
      color: var(--fg);
      background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
      box-shadow: inset 0 0 0 1px rgba(255,255,255,0.09);
    }
    .btn:hover{ box-shadow: 0 14px 28px rgba(23,23,40,0.4); }
    .btn .shimmer{
      position: absolute; inset: -30% -80% auto auto; width: 160%; height: 160%;
      background: conic-gradient(from 0deg, rgba(255,255,255,0.22), rgba(255,255,255,0) 35%);
      transform: translateX(-60%) rotate(15deg); opacity: .15; pointer-events: none;
      transition: transform 1.4s ease;
    }
    .btn:hover .shimmer{ transform: translateX(0%) rotate(15deg); }

    main{ position: relative; z-index: 1; }
    section{
      position: relative;
      min-height: 100svh;
      display: grid;
      align-items: center;
      padding: 120px 0 100px;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .hero{
      padding-top: 140px;
    }
    .eyebrow{
      display: inline-flex; align-items: center; gap: 8px;
      color: var(--muted); font-size: 14px; letter-spacing: .3px;
      background: rgba(255,255,255,0.05); border-radius: 999px; padding: 6px 10px; border: 1px solid rgba(255,255,255,0.08);
    }
    .title{
      font-size: clamp(36px, 6vw, 64px); line-height: 1.04; margin: 16px 0 14px; font-weight: 800;
      letter-spacing: -0.5px;
    }
    .subtitle{ color: var(--muted); font-size: clamp(16px, 2.2vw, 20px); max-width: 60ch; }
    .cta-row{ display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-top: 26px; }
    .hero-visual{
      margin-top: 40px;
      background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
      border-radius: 18px; padding: 24px; border: 1px solid rgba(255,255,255,0.08);
      display: grid; grid-template-columns: repeat(12, 1fr); gap: 12px;
      box-shadow: var(--shadow);
    }
    .hero-visual .tile{
      aspect-ratio: 4/3; border-radius: 12px; background: linear-gradient(135deg, rgba(124,58,237,0.35), rgba(34,211,238,0.25));
      border: 1px solid rgba(255,255,255,0.12); backdrop-filter: blur(2px);
    }
    .hero-visual .tile.wide{ grid-column: span 6; }
    .hero-visual .tile.tall{ grid-column: span 3; aspect-ratio: 3/4; }
    @media (max-width: 800px){
      .hero-visual{ grid-template-columns: repeat(6, 1fr); }
      .hero-visual .tile.wide{ grid-column: span 6; }
      .hero-visual .tile.tall{ grid-column: span 3; }
    }

    .grid-3{
      display: grid; gap: 18px; grid-template-columns: repeat(3, 1fr); margin-top: 20px;
    }
    @media (max-width: 980px){ .grid-3{ grid-template-columns: 1fr; } }

    .card{
      background: var(--card); border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--radius); padding: 22px; transition: background .3s ease, transform .2s ease;
      will-change: transform; position: relative; overflow: hidden;
    }
    .card:hover{ background: var(--card-hover); }
    .icon{
      width: 42px; height: 42px; border-radius: 12px; display: inline-grid; place-items: center; color: #0B0B14;
      background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
      box-shadow: 0 8px 18px rgba(124,58,237,0.35);
    }
    .card h3{ margin: 14px 0 8px; font-size: 20px; }
    .muted{ color: var(--muted); }

    .showcase{
      display: grid; gap: 18px; grid-template-columns: 2fr 1fr;
      margin-top: 26px;
    }
    @media (max-width: 980px){ .showcase{ grid-template-columns: 1fr; } }
    .mock{
      min-height

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12 / 36

12

Dark Mode Dashboardweb design

Tests an AI's UI design skills with theming support

Claude Opus 4.6

Claude Opus 4.6

Anthropic · Feb 2026website

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

Try this prompt

GPT-5 Pro

GPT-5 Pro

Openai · Oct 2025website

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

Try this prompt

Vote

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