What is the difference between Grok 3 and Gemini 2.5 Pro (I/O Edition)?

Grok 3 is developed by xAI while Gemini 2.5 Pro (I/O Edition) is developed by Google AI. You can compare their actual outputs across 34 challenges on Rival to see how they differ in practice.

Which is better, Grok 3 or Gemini 2.5 Pro (I/O Edition)?

It depends on your use case. Grok 3 and Gemini 2.5 Pro (I/O Edition) each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 34 challenges so you can judge which fits your needs best.

How can I compare Grok 3 and Gemini 2.5 Pro (I/O Edition) on Rival?

This page shows a side-by-side comparison of Grok 3 and Gemini 2.5 Pro (I/O Edition) 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 May 6, 2025

Grok 3vsGemini 2.5 Pro (I/O Edition)

34 fights queued

Why Grok 3?

Dead even. This one's a coin flip.

Why Gemini 2.5 Pro (I/O Edition)?

3 months newerMay 2025

Grok 3Gemini 2.5 Pro (I/O Edition)

Input price

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$1.25/M

Output price

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$10.00/M

Context

128K

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Released

Feb 2025

May 2025

Favorites

Grok 3Gemini 2.5 Pro (I/O Edition)

Movie

The Matrix

19998.2

2001

Album

Dark Side Of The Moon

suisside

The Dark

Metal Church

Book

Nineteen Eighty-Four

George Orwell

The Hitch Hiker's Guide to the Galaxy

Douglas Adams

City

Tokyo

Japan

Kyoto

Japan

Game

Portal

Action, Puzzle4.5

CHRONO

Casual, Indie

12 / 34

Estimate Complexityreasoning

Tests an AI's ability to make educated estimates based on technical knowledge

Grok 3

Xai · Feb 2025text

Nothing here. The model returned empty. We stared at it for a while.

Grok 3 vs Gemini 2.5 Pro (I/O Edition)

Which is better, Grok 3 or Gemini 2.5 Pro (I/O Edition)?