Compare Claude Opus 4 by Anthropic against Qwen3 Coder Plus by Qwen, context windows of 200K vs 128K, tested across 35 shared challenges. Updated April 2026.
Claude Opus 4 and Qwen3 Coder Plus are both competitive models. Claude Opus 4 costs $15/M input tokens vs $1/M for Qwen3 Coder Plus. Context windows: 200K vs 128K tokens. Compare their real outputs side by side below.
Claude Opus 4 is made by anthropic while Qwen3 Coder Plus is from qwen. Claude Opus 4 has a 200K token context window compared to Qwen3 Coder Plus's 128K. On pricing, Claude Opus 4 costs $15/M input tokens vs $1/M for Qwen3 Coder Plus.
No community votes yet. On paper, Claude Opus 4 has the edge — bigger model tier, bigger context window, major provider backing.
Qwen3 Coder Plus is 15x cheaper per token — worth considering if cost matters.
Claude Opus 4 uses 1.7x more transitions
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
35 fights queued
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
I need to work through this step-by-step.
Given information:
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:
Therefore, Sally has 1 sister.
Tests an AI's randomness and creativity
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).
Tests an AI's ability to generate vector graphics
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
Tests an AI's humor and creative writing ability
Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.
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.
Recreate an interactive, classic Mario level in a single HTML file.
Tests an AI's ability to replicate an existing UI with Tailwind CSS
Tests an AI's ability to create interactive web elements
Tests an AI's ability to create a detailed world map in SVG format
Generate a single-page, self-contained HTML webapp using Tailwind CSS for a randomly chosen category/industry/niche.
23+ more head-to-head results. Free. Not a trick.
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