What is the difference between Grok 3 Mini Beta and GPT-5 Mini?

Grok 3 Mini Beta is developed by xAI while GPT-5 Mini is developed by OpenAI. You can compare their actual outputs across 8 challenges on Rival to see how they differ in practice.

Which is better, Grok 3 Mini Beta or GPT-5 Mini?

It depends on your use case. Grok 3 Mini Beta and GPT-5 Mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 8 challenges so you can judge which fits your needs best.

How much does Grok 3 Mini Beta cost compared to GPT-5 Mini?

Grok 3 Mini Beta costs $0.4/M input tokens and GPT-5 Mini costs $0.25/M input tokens. GPT-5 Mini is $0.15/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 GPT-5 Mini on Rival?

This page shows a side-by-side comparison of Grok 3 Mini Beta and GPT-5 Mini 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.

Rival

Updated Aug 7, 2025

Grok 3 Mini BetavsGPT-5 Mini

8 fights queued

Why Grok 3 Mini Beta?

2x cheaper overall$0.40/M in · $0.80/M out

Why GPT-5 Mini?

4 months newerAug 2025

Favorites

Grok 3 Mini BetaGPT-5 Mini

Movie

The Matrix

19998.2

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Album

The Dark Side of the Moon

Pink Floyd

—

Book

Les Robots

Isaac Asimov

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City

San Francisco

United States

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Game

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5

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8 / 8

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

Grok 3 Mini Beta

Xai · Apr 2025svg

Grok 3 Mini Beta vs GPT-5 Mini

Which is better, Grok 3 Mini Beta or GPT-5 Mini?