Compare Claude Opus 4.5 by Anthropic against Qwen Plus 0728 by Qwen, tested across 54 shared challenges. Updated April 2026.
Claude Opus 4.5 and Qwen Plus 0728 are both competitive models. Compare their real outputs side by side below.
Claude Opus 4.5 is made by anthropic while Qwen Plus 0728 is from qwen.
No community votes yet. On paper, Claude Opus 4.5 has the edge — bigger model tier, newer, major provider backing.
Qwen Plus 0728 uses 4.5x more emoji
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

Compare Claude Opus 4.5 by Anthropic against Qwen Plus 0728 by Qwen, tested across 54 shared challenges. Updated April 2026.
Claude Opus 4.5 and Qwen Plus 0728 are both competitive models. Compare their real outputs side by side below.
Claude Opus 4.5 is made by anthropic while Qwen Plus 0728 is from qwen.
No community votes yet. On paper, Claude Opus 4.5 has the edge — bigger model tier, newer, major provider backing.
Qwen Plus 0728 uses 4.5x more emoji
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

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37+ more head-to-head results. Free. Not a trick.
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49 fights queued
37+ more head-to-head results. Free. Not a trick.
Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy