What is the difference between Grok 3 Thinking and o3 Mini?

Grok 3 Thinking is developed by xAI while o3 Mini is developed by OpenAI. Grok 3 Thinking has a 128K token context window vs o3 Mini's 64K. 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 o3 Mini?

It depends on your use case. Grok 3 Thinking and o3 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 o3 Mini on Rival?

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

Grok 3 Thinking is developed by xAI while o3 Mini is developed by OpenAI. Grok 3 Thinking has a 128K token context window vs o3 Mini's 64K. 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 o3 Mini?

It depends on your use case. Grok 3 Thinking and o3 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 o3 Mini on Rival?

This page shows a side-by-side comparison of Grok 3 Thinking 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 Thinking vs o3 Mini: Which Is Better?

Updated Feb 2025

Our Verdict

Grok 3 Thinking

o3 MiniRunner-up

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

Slight edge

API pricing

Cost per 1M tokens

Grok 3 Thinking

Input

—

Output

—

o3 Mini

Input

$1.10

Output

$4.40

Writing DNA

Style Comparison

Similarity

65%

Grok 3 Thinking uses 1.5x more lists

Grok 3 Thinking

o3 Mini

46%Vocabulary65%

19wSentence Length17w

1.11Hedging0.74

3.3Bold3.9

2.6Lists1.7

0.00Emoji0.00

0.64Headings0.47

0.25Transitions0.38

Based on 6 + 12 text responses

Research

What we learned reading every model

Grok 3 Thinking and o3 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

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Updated Feb 2025

Our Verdict

Grok 3 Thinking

o3 MiniRunner-up

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

Slight edge

API pricing

Cost per 1M tokens

Grok 3 Thinking

Input

—

Output

—

o3 Mini

Input

$1.10

Output

$4.40

Writing DNA

Style Comparison

Similarity

65%

Grok 3 Thinking uses 1.5x more lists

Grok 3 Thinking

o3 Mini

46%Vocabulary65%

19wSentence Length17w

1.11Hedging0.74

3.3Bold3.9

2.6Lists1.7

0.00Emoji0.00

0.64Headings0.47

0.25Transitions0.38

Based on 6 + 12 text responses

Research

What we learned reading every model

Grok 3 Thinking and o3 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

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