GPT-5.1-Codex-Mini
Nothing here. The model returned empty. We stared at it for a while.
GPT-5.1-Codex-Mini vs Pony Alpha
Compare GPT-5.1-Codex-Mini by OpenAI against Pony Alpha by OpenRouter, context windows of 400K vs 200K, tested across 47 shared challenges. Updated April 2026.
Which is better, GPT-5.1-Codex-Mini or Pony Alpha?
GPT-5.1-Codex-Mini and Pony Alpha are both competitive models. GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $0/M for Pony Alpha. Context windows: 400K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.1-Codex-Mini and Pony Alpha
GPT-5.1-Codex-Mini is made by openai while Pony Alpha is from openrouter. GPT-5.1-Codex-Mini has a 400K token context window compared to Pony Alpha's 200K. On pricing, GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $0/M for Pony Alpha.
Our Verdict
GPT-5.1-Codex-Mini
Pony AlphaRunner-up
No community votes yet. On paper, GPT-5.1-Codex-Mini has the edge — bigger model tier, bigger context window, major provider backing.
Too close to call
Writing DNA
Style Comparison
Similarity
96%
Pony Alpha uses 9.2x more headings
GPT-5.1-Codex-Mini
Pony Alpha
65%Vocabulary52%
20wSentence Length15w
0.56Hedging0.40
3.3Bold5.9
3.4Lists4.4
0.00Emoji0.00
0.08Headings0.71
0.05Transitions0.23
Based on 13 + 20 text responses
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Some models write identically. You are paying for the brand.
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.
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