Question 1

What is the difference between GPT-4o (Omni) and Gemini 3.1 Pro Preview?

Accepted Answer

GPT-4o (Omni) is developed by OpenAI while Gemini 3.1 Pro Preview is developed by Google AI. GPT-4o (Omni) has a 128K token context window vs Gemini 3.1 Pro Preview's 1.0M. You can compare their actual outputs across 51 challenges on RIVAL to see how they differ in practice.

Question 2

Which is better, GPT-4o (Omni) or Gemini 3.1 Pro Preview?

Accepted Answer

It depends on your use case. GPT-4o (Omni) and Gemini 3.1 Pro Preview each have strengths in different areas. RIVAL lets you compare their real outputs side-by-side across 51 challenges so you can judge which fits your needs best.

Question 3

How much does GPT-4o (Omni) cost compared to Gemini 3.1 Pro Preview?

Accepted Answer

GPT-4o (Omni) costs $2.5/M input tokens and Gemini 3.1 Pro Preview costs $2/M input tokens. Gemini 3.1 Pro Preview is $0.50/M cheaper per input. Check their side-by-side outputs on RIVAL to see if the price difference is justified by quality.

Question 4

How can I compare GPT-4o (Omni) and Gemini 3.1 Pro Preview on RIVAL?

Accepted Answer

This page shows a side-by-side comparison of GPT-4o (Omni) and Gemini 3.1 Pro Preview across shared challenges. You can vote on which model produced the better output, and Pro users can create custom challenges to test both models with their own prompts.

GPT-4o (Omni) vs Gemini 3.1 Pro Preview

What is the difference between GPT-4o (Omni) and Gemini 3.1 Pro Preview?

Which is better, GPT-4o (Omni) or Gemini 3.1 Pro Preview?

How much does GPT-4o (Omni) cost compared to Gemini 3.1 Pro Preview?

How can I compare GPT-4o (Omni) and Gemini 3.1 Pro Preview on RIVAL?