Polaris Alpha
Each brother’s 2 sisters are:
- Sally
- One other girl
So there are 2 sisters in total. Since one is Sally, she has 1 sister.
Polaris Alpha vs Claude Opus 4
Compare Polaris Alpha by OpenRouter against Claude Opus 4 by Anthropic, in 1 community votes, claude opus 4 wins 100% of head-to-head duels, context windows of 256K vs 200K, tested across 21 shared challenges. Updated April 2026.
Which is better, Polaris Alpha or Claude Opus 4?
Claude Opus 4 is the better choice overall, winning 100% of 1 blind community votes on Rival. Polaris Alpha costs $0/M input tokens vs $15/M for Claude Opus 4. Context windows: 256K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between Polaris Alpha and Claude Opus 4
Polaris Alpha is made by openrouter while Claude Opus 4 is from anthropic. Polaris Alpha has a 256K token context window compared to Claude Opus 4's 200K. On pricing, Polaris Alpha costs $0/M input tokens vs $15/M for Claude Opus 4. In community voting, In 1 community votes, Claude Opus 4 wins 100% of head-to-head duels.
In 1 community votes, Claude Opus 4 wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.
Our Verdict
Claude Opus 4Winner
Polaris AlphaRunner-up
Pick Claude Opus 4. In 1 blind votes, Claude Opus 4 wins 100% of the time. That's not luck.
Clear winner
Writing DNA
Style Comparison
Similarity
96%
Claude Opus 4 uses 444.0x more bold
Polaris Alpha
Claude Opus 4
65%Vocabulary64%
15wSentence Length62w
0.23Hedging0.52
0.0Bold4.4
11.3Lists9.1
0.00Emoji0.11
0.00Headings1.87
0.04Transitions0.27
Based on 14 + 16 text responses
vsAsk them anything yourself
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178 models fingerprinted across 32 writing dimensions. Free research.
Model Similarity Index
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
Devstral M / S
95.7%
Qwen3 Coder / Flash
95.6%
GPT-5.4 / Mini
93.3%
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
Free preview13 of 58 slides
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