What is the difference between Grok 3 Thinking and OpenAI o4-mini?

Grok 3 Thinking is developed by xAI while OpenAI o4-mini is developed by OpenAI. You can compare their actual outputs across 14 challenges on Rival to see how they differ in practice.

Which is better, Grok 3 Thinking or OpenAI o4-mini?

It depends on your use case. Grok 3 Thinking and OpenAI o4-mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 14 challenges so you can judge which fits your needs best.

How can I compare Grok 3 Thinking and OpenAI o4-mini on Rival?

This page shows a side-by-side comparison of Grok 3 Thinking and OpenAI o4-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 Thinking and OpenAI o4-mini?

Grok 3 Thinking is developed by xAI while OpenAI o4-mini is developed by OpenAI. You can compare their actual outputs across 14 challenges on Rival to see how they differ in practice.

Which is better, Grok 3 Thinking or OpenAI o4-mini?

It depends on your use case. Grok 3 Thinking and OpenAI o4-mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 14 challenges so you can judge which fits your needs best.

How can I compare Grok 3 Thinking and OpenAI o4-mini on Rival?

This page shows a side-by-side comparison of Grok 3 Thinking and OpenAI o4-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 Thinking vs OpenAI o4-mini: Which Is Better?

Updated Apr 2025

Our Verdict

Grok 3 Thinking

OpenAI o4-mini

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call

API pricing

Cost per 1M tokens

Grok 3 Thinking

Input

—

Output

—

OpenAI o4-mini

Input

$1.10

Output

$4.40

Writing DNA

Style Comparison

Similarity

40%

Grok 3 Thinking uses 334.3x more bold

Grok 3 Thinking

OpenAI o4-mini

46%Vocabulary73%

19wSentence Length15w

1.11Hedging0.18

3.3Bold0.0

2.6Lists2.1

0.00Emoji0.00

0.64Headings0.00

0.25Transitions0.02

Based on 6 + 10 text responses

Research

What we learned reading every model

Grok 3 Thinking and OpenAI o4-mini have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Grok 3 Thinking vs MiniMax M3New provider

Grok 3 Thinking vs Llama 4 MaverickNew provider

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

Updated Apr 2025

Our Verdict

Grok 3 Thinking

OpenAI o4-mini

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call

API pricing

Cost per 1M tokens

Grok 3 Thinking

Input

—

Output

—

OpenAI o4-mini

Input

$1.10

Output

$4.40

Writing DNA

Style Comparison

Similarity

40%

Grok 3 Thinking uses 334.3x more bold

Grok 3 Thinking

OpenAI o4-mini

46%Vocabulary73%

19wSentence Length15w

1.11Hedging0.18

3.3Bold0.0

2.6Lists2.1

0.00Emoji0.00

0.64Headings0.00

0.25Transitions0.02

Based on 6 + 10 text responses

Research

What we learned reading every model

Grok 3 Thinking and OpenAI o4-mini have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Grok 3 Thinking vs MiniMax M3New provider

Grok 3 Thinking vs Llama 4 MaverickNew provider

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