What is the difference between Grok 3 Mini Beta and ChatGPT-4o (March 2025)?

Grok 3 Mini Beta is developed by xAI while ChatGPT-4o (March 2025) is developed by OpenAI. Grok 3 Mini Beta has a 131K token context window vs ChatGPT-4o (March 2025)'s 128K. You can compare their actual outputs across 11 challenges on RIVAL to see how they differ in practice.

Which is better, Grok 3 Mini Beta or ChatGPT-4o (March 2025)?

It depends on your use case. Grok 3 Mini Beta and ChatGPT-4o (March 2025) each have strengths in different areas. RIVAL lets you compare their real outputs side-by-side across 11 challenges so you can judge which fits your needs best.

How much does Grok 3 Mini Beta cost compared to ChatGPT-4o (March 2025)?

Grok 3 Mini Beta costs $0.4/M input tokens and ChatGPT-4o (March 2025) costs $5/M input tokens. Grok 3 Mini Beta is $4.60/M cheaper per input. Check their side-by-side outputs on RIVAL to see if the price difference is justified by quality.

How can I compare Grok 3 Mini Beta and ChatGPT-4o (March 2025) on RIVAL?

This page shows a side-by-side comparison of Grok 3 Mini Beta and ChatGPT-4o (March 2025) 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.