GPT-4.5
Nothing here. The model returned empty. We stared at it for a while.
GPT-4.5 vs Pony Alpha
Compare GPT-4.5 by OpenAI against Pony Alpha by OpenRouter, context windows of 128K vs 200K, tested across 24 shared challenges. Updated April 2026.
Which is better, GPT-4.5 or Pony Alpha?
GPT-4.5 and Pony Alpha are both competitive models. GPT-4.5 costs $75/M input tokens vs $0/M for Pony Alpha. Context windows: 128K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-4.5 and Pony Alpha
GPT-4.5 is made by openai while Pony Alpha is from openrouter. GPT-4.5 has a 128K token context window compared to Pony Alpha's 200K. On pricing, GPT-4.5 costs $75/M input tokens vs $0/M for Pony Alpha.
Our Verdict
GPT-4.5
Pony Alpha
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Too close to call
Writing DNA
Style Comparison
Similarity
95%
GPT-4.5 uses 2.3x more transitions
GPT-4.5
Pony Alpha
63%Vocabulary52%
16wSentence Length15w
0.57Hedging0.40
4.7Bold5.9
6.4Lists4.4
0.00Emoji0.00
1.30Headings0.71
0.54Transitions0.23
Based on 11 + 20 text responses
vs
Ask 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.
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