What is the difference between GPT-5.2 and Grok 3 Thinking?

GPT-5.2 is developed by OpenAI while Grok 3 Thinking is developed by xAI. GPT-5.2 has a 400K 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-5.2 or Grok 3 Thinking?

It depends on your use case. GPT-5.2 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-5.2 and Grok 3 Thinking on Rival?

This page shows a side-by-side comparison of GPT-5.2 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-5.2 and Grok 3 Thinking?

GPT-5.2 is developed by OpenAI while Grok 3 Thinking is developed by xAI. GPT-5.2 has a 400K 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-5.2 or Grok 3 Thinking?

It depends on your use case. GPT-5.2 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-5.2 and Grok 3 Thinking on Rival?

This page shows a side-by-side comparison of GPT-5.2 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-5.2 vs Grok 3 Thinking: Which Is Better?

Updated Dec 2025

Our Verdict

GPT-5.2

Grok 3 ThinkingRunner-up

No community votes yet. On paper, GPT-5.2 has the edge — newer, bigger context window.

Too close to call

API pricing

Cost per 1M tokens

GPT-5.2

Input

$1.75

Output

$14.00

Grok 3 Thinking

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

40%

GPT-5.2 uses 5.8x more emoji

GPT-5.2

Grok 3 Thinking

64%Vocabulary46%

16wSentence Length19w

0.34Hedging1.11

9.4Bold3.3

3.9Lists2.6

0.06Emoji0.00

0.89Headings0.64

0.31Transitions0.25

Based on 15 + 6 text responses

Research

What we learned reading every model

GPT-5.2 and Grok 3 Thinking 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

GPT-5.2 vs MiniMax M3New provider

GPT-5.2 vs Llama 4 MaverickNew provider

GPT-5.2 vs Gemini 2.5 Pro (I/O Edition)New provider

Updated Dec 2025

Our Verdict

GPT-5.2

Grok 3 ThinkingRunner-up

No community votes yet. On paper, GPT-5.2 has the edge — newer, bigger context window.

Too close to call

API pricing

Cost per 1M tokens

GPT-5.2

Input

$1.75

Output

$14.00

Grok 3 Thinking

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

40%

GPT-5.2 uses 5.8x more emoji

GPT-5.2

Grok 3 Thinking

64%Vocabulary46%

16wSentence Length19w

0.34Hedging1.11

9.4Bold3.3

3.9Lists2.6

0.06Emoji0.00

0.89Headings0.64

0.31Transitions0.25

Based on 15 + 6 text responses

Research

What we learned reading every model

GPT-5.2 and Grok 3 Thinking 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

GPT-5.2 vs MiniMax M3New provider

GPT-5.2 vs Llama 4 MaverickNew provider

GPT-5.2 vs Gemini 2.5 Pro (I/O Edition)New provider