What is the difference between ChatGPT-4o (March 2025) and Gemini 3 Pro Preview?

ChatGPT-4o (March 2025) is developed by OpenAI while Gemini 3 Pro Preview is developed by Google AI. You can compare their actual outputs across 32 challenges on Rival to see how they differ in practice.

Which is better, ChatGPT-4o (March 2025) or Gemini 3 Pro Preview?

It depends on your use case. ChatGPT-4o (March 2025) and Gemini 3 Pro Preview each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 32 challenges so you can judge which fits your needs best.

How can I compare ChatGPT-4o (March 2025) and Gemini 3 Pro Preview on Rival?

This page shows a side-by-side comparison of ChatGPT-4o (March 2025) and Gemini 3 Pro Preview across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.