What is the difference between GPT-4o mini and Grok 3 Thinking?

GPT-4o mini is developed by OpenAI while Grok 3 Thinking is developed by xAI. GPT-4o mini has a 128K token context window vs Grok 3 Thinking's 128K. You can compare their actual outputs across 14 challenges on Rival to see how they differ in practice.

Which is better, GPT-4o mini or Grok 3 Thinking?

It depends on your use case. GPT-4o mini and Grok 3 Thinking 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 GPT-4o mini and Grok 3 Thinking on Rival?

This page shows a side-by-side comparison of GPT-4o mini and Grok 3 Thinking 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 GPT-4o mini and Grok 3 Thinking?

GPT-4o mini is developed by OpenAI while Grok 3 Thinking is developed by xAI. GPT-4o mini has a 128K token context window vs Grok 3 Thinking's 128K. You can compare their actual outputs across 14 challenges on Rival to see how they differ in practice.

Which is better, GPT-4o mini or Grok 3 Thinking?

It depends on your use case. GPT-4o mini and Grok 3 Thinking 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 GPT-4o mini and Grok 3 Thinking on Rival?

This page shows a side-by-side comparison of GPT-4o mini and Grok 3 Thinking 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.

GPT-4o mini vs Grok 3 Thinking: Which Is Better?

Updated Feb 2025

Our Verdict

Grok 3 Thinking

GPT-4o miniRunner-up

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

Too close to call

API pricing

Cost per 1M tokens

GPT-4o mini

Input

$0.15

Output

$0.60

Grok 3 Thinking

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

85%

GPT-4o mini uses 1.6x more headings

GPT-4o mini

Grok 3 Thinking

54%Vocabulary46%

18wSentence Length19w

0.84Hedging1.11

3.8Bold3.3

3.3Lists2.6

0.00Emoji0.00

1.03Headings0.64

0.23Transitions0.25

Based on 22 + 6 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Grok 3 Thinking vs Gemini 2.5 Pro Preview 06-05New provider

GPT-4o mini vs MiniMax M3New provider

GPT-4o mini vs Llama 4 MaverickNew provider

Updated Feb 2025

Our Verdict

Grok 3 Thinking

GPT-4o miniRunner-up

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

Too close to call

API pricing

Cost per 1M tokens

GPT-4o mini

Input

$0.15

Output

$0.60

Grok 3 Thinking

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

85%

GPT-4o mini uses 1.6x more headings

GPT-4o mini

Grok 3 Thinking

54%Vocabulary46%

18wSentence Length19w

0.84Hedging1.11

3.8Bold3.3

3.3Lists2.6

0.00Emoji0.00

1.03Headings0.64

0.23Transitions0.25

Based on 22 + 6 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Grok 3 Thinking vs Gemini 2.5 Pro Preview 06-05New provider

GPT-4o mini vs MiniMax M3New provider

GPT-4o mini vs Llama 4 MaverickNew provider