Gemini 3 Pro vs GPT 5.2: A Blind Test Reveals Code Red DNA
December 2025 · 6 minute readI ran a blind A/B test between Gemini 3 Pro and GPT 5.2 on my slash command converter. Same prompt, same input. One gave me 60 lines I could use. The other gave me 250 lines I had to rewrite. The difference wasn’t the prompt—it was the training.