Updated Feb 16, 2026

Our Verdict

Qwen: Qwen3.5 397B A17B

Claude Opus 4

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Qwen: Qwen3.5 397B A17B is 21x cheaper per token — worth considering if cost matters.

Too close to call

Writing DNA

Style Comparison

Similarity

97%

Claude Opus 4 uses 4.3x more sentence length

Qwen: Qwen3.5 397B A17B

Claude Opus 4

54%Vocabulary64%

14wSentence Length62w

0.39Hedging0.52

6.9Bold4.4

4.2Lists9.1

0.23Emoji0.11

0.93Headings1.87

0.17Transitions0.27

Based on 23 + 16 text responses

vs

Ask them anything yourself

Qwen: Qwen3.5 397B A17B

Claude Opus 4

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

Claude Opus 4 vs GPT-5New provider

Qwen: Qwen3.5 397B A17B vs MiniMax M1New provider

Claude Opus 4 vs Llama 4 MaverickNew provider

Qwen: Qwen3.5 397B A17BvsClaude Opus 4

35 fights queued

Why Qwen: Qwen3.5 397B A17B?

21.2x cheaper overall$0.60/M in · $3.60/M out

1.3x more context262K

Leads 1 of 1 benchmarks

Stronger on SWE-bench Verified76.4% vs 72.5%

9 months newerFeb 2026

Why Claude Opus 4?

Dead even. This one's a coin flip.

Qwen: Qwen3.5 397B A17BClaude Opus 4

Input price

$0.60/M

$15.00/M

Output price

$3.60/M

$75.00/M

Context

262K

200K

Released

Feb 2026

May 2025

Benchmarks1 common

SWE-bench Verified

76.4%+5.1%

72.5%

Favorites

Qwen: Qwen3.5 397B A17BClaude Opus 4

Movie

Inception

Inception

Arrival

Arrival

Album

Abbey Road

The Dark Side of the Moon

The Dark Side of the Moon

Book

Frankenstein or The Modern Prometheus

Frankenstein or The Modern Prometheus

Cien años de soledad

Cien años de soledad

Gabriel García Márquez

City

Tokyo

Istanbul

Game

Tetris (1984)

Tetris (1984)

Portal 2

Portal 2

Shooter, Puzzle4.6

12 / 35

01

Logic Puzzlereasoning

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

Qwen: Qwen3.5 397B A17B

Qwen: Qwen3.5 397B A17B

Qwen · Feb 2026text

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

Try this prompt

Claude Opus 4

Claude Opus 4

Anthropic · May 2025text

I need to work through this step-by-step.

Given information:

Sally is a girl
Sally has 3 brothers
Each brother has 2 sisters

Since Sally is one of the sisters that each brother has, and each brother has 2 sisters total, that means th ere must be exactly 2 sisters in the family.

The 2 sisters are:

Sally
One other sister

Therefore, Sally has 1 sister.

Try this prompt

Vote

2 / 35

02

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

Qwen: Qwen3.5 397B A17B

Qwen: Qwen3.5 397B A17B

Qwen · Feb 2026text

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

Try this prompt

Claude Opus 4

Claude Opus 4

Anthropic · May 2025text

Here are 5 jokes:

Why don't scientists trust atoms? Because they make up everything!
What do you call a bear with no teeth? A gummy bear!
Why did the scarecrow win an award? He was outstanding in his field!
What do you call a fake noodle? An impasta!
Why don't eggs tell jokes? They'd crack up!

All 5 jokes are unique - each one has a different setup and punchline, covering different topics (atoms/scie nce, bears, scarecrows, pasta, and eggs).

Try this prompt

Vote

3 / 35

03

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

Qwen: Qwen3.5 397B A17B

Qwen: Qwen3.5 397B A17B

Qwen · Feb 2026svg

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

Try this prompt

Claude Opus 4

Claude Opus 4

Anthropic · May 2025svg

Try this prompt

Vote

4 / 35

04

Xbox Controller SVG Artimage generation

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

Qwen: Qwen3.5 397B A17B

Qwen: Qwen3.5 397B A17B

Qwen · Feb 2026svg

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

Try this prompt

Claude Opus 4

Claude Opus 4

Anthropic · May 2025svg

Try this prompt

Vote

5 / 35

05

Generate a Stand-Up Routineconversation

Tests an AI's humor and creative writing ability

Qwen: Qwen3.5 397B A17B

Qwen: Qwen3.5 397B A17B

Qwen · Feb 2026text

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

Try this prompt

Claude Opus 4

Claude Opus 4

Anthropic · May 2025text

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

Try this prompt

Vote

6 / 35

06

Pokémon Battle UI Recreationweb design

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

Qwen: Qwen3.5 397B A17B

Qwen: Qwen3.5 397B A17B

Qwen · Feb 2026website

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

Try this prompt

Claude Opus 4

Claude Opus 4

Anthropic · May 2025website

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

Try this prompt

Vote

Sponsored

7 / 35

07

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.

Qwen: Qwen3.5 397B A17B

Qwen: Qwen3.5 397B A17B

Qwen · Feb 2026html

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

Try this prompt

Claude Opus 4

Claude Opus 4

Anthropic · May 2025html

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

Try this prompt

Vote

8 / 35

08

Mario Level UI Recreationweb design

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

Qwen: Qwen3.5 397B A17B

Qwen: Qwen3.5 397B A17B

Qwen · Feb 2026website

Try this prompt

Claude Opus 4

Claude Opus 4

Anthropic · May 2025website

Try this prompt

Vote

9 / 35

09

Linear App Cloneweb design

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

Qwen: Qwen3.5 397B A17B

Qwen: Qwen3.5 397B A17B

Qwen · Feb 2026website

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

Try this prompt

Claude Opus 4

Claude Opus 4

Anthropic · May 2025website

Try this prompt

Vote

10 / 35

10

Interactive Catan Boardweb design

Tests an AI's ability to create interactive web elements

Qwen: Qwen3.5 397B A17B

Qwen: Qwen3.5 397B A17B

Qwen · Feb 2026website

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

Try this prompt

Claude Opus 4

Claude Opus 4

Anthropic · May 2025website

Try this prompt

Vote

11 / 35

11

World Map SVGimage generation

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

Qwen: Qwen3.5 397B A17B

Qwen: Qwen3.5 397B A17B

Qwen · Feb 2026svg

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

Try this prompt

Claude Opus 4

Claude Opus 4

Anthropic · May 2025svg

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Vote

12 / 35

12

Random Tailwind Webappweb design

Generate a single-page, self-contained HTML webapp using Tailwind CSS for a randomly chosen category/industry/niche.

Qwen: Qwen3.5 397B A17B

Qwen: Qwen3.5 397B A17B

Qwen · Feb 2026website

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

Try this prompt

Claude Opus 4

Claude Opus 4

Anthropic · May 2025website

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

Try this prompt

Vote

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