What is the difference between Grok 3 and o3 Mini?

Grok 3 is developed by xAI while o3 Mini is developed by OpenAI. Grok 3 has a 128K token context window vs o3 Mini's 64K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Grok 3 or o3 Mini?

It depends on your use case. Grok 3 and o3 Mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How can I compare Grok 3 and o3 Mini on Rival?

This page shows a side-by-side comparison of Grok 3 and o3 Mini 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.

What is the difference between Grok 3 and o3 Mini?

Grok 3 is developed by xAI while o3 Mini is developed by OpenAI. Grok 3 has a 128K token context window vs o3 Mini's 64K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Grok 3 or o3 Mini?

It depends on your use case. Grok 3 and o3 Mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How can I compare Grok 3 and o3 Mini on Rival?

This page shows a side-by-side comparison of Grok 3 and o3 Mini 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.

Grok 3 vs o3 Mini: Which Is Better?

Rival

Updated Feb 2025

Our Verdict

Grok 3

o3 MiniRunner-up

No community votes yet. On paper, Grok 3 has the edge — bigger model tier, newer, bigger context window.

Slight edge

API pricing

Cost per 1M tokens

Grok 3

Input

—

Output

—

o3 Mini

Input

$1.10

Output

$4.40

Writing DNA

Style Comparison

Similarity

62%

Grok 3 uses 3.9x more emoji

Grok 3

o3 Mini

49%Vocabulary65%

18wSentence Length17w

0.94Hedging0.74

2.5Bold3.9

3.0Lists1.7

0.04Emoji0.00

0.65Headings0.47

0.08Transitions0.38

Based on 17 + 12 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

o3 Mini vs MiniMax M3New provider

o3 Mini vs Llama 4 MaverickNew provider

o3 Mini vs Gemini 2.5 Pro (I/O Edition)New provider

Rival

Updated Feb 2025

Our Verdict

Grok 3

o3 MiniRunner-up

No community votes yet. On paper, Grok 3 has the edge — bigger model tier, newer, bigger context window.

Slight edge

API pricing

Cost per 1M tokens

Grok 3

Input

—

Output

—

o3 Mini

Input

$1.10

Output

$4.40

Writing DNA

Style Comparison

Similarity

62%

Grok 3 uses 3.9x more emoji

Grok 3

o3 Mini

49%Vocabulary65%

18wSentence Length17w

0.94Hedging0.74

2.5Bold3.9

3.0Lists1.7

0.04Emoji0.00

0.65Headings0.47

0.08Transitions0.38

Based on 17 + 12 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

o3 Mini vs MiniMax M3New provider

o3 Mini vs Llama 4 MaverickNew provider

o3 Mini vs Gemini 2.5 Pro (I/O Edition)New provider

Rival