What is the difference between GPT-5 and Grok 3 Thinking?

GPT-5 is developed by OpenAI while Grok 3 Thinking is developed by xAI. GPT-5 has a 400K token context window vs Grok 3 Thinking's 128K. in 4 community votes on Rival, Grok 3 Thinking wins 75% of head-to-head matchups. These results are based on blind head-to-head voting across 14 challenges.

Which is better, GPT-5 or Grok 3 Thinking?

Based on 4 community votes on Rival, Grok 3 Thinking wins 75% of head-to-head matchups against GPT-5.

How are GPT-5 vs Grok 3 Thinking votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 4 votes have been collected for this pair across 14 challenges. All vote data is part of Rival's open dataset.

What is the difference between GPT-5 and Grok 3 Thinking?

GPT-5 is developed by OpenAI while Grok 3 Thinking is developed by xAI. GPT-5 has a 400K token context window vs Grok 3 Thinking's 128K. in 4 community votes on Rival, Grok 3 Thinking wins 75% of head-to-head matchups. These results are based on blind head-to-head voting across 14 challenges.

Which is better, GPT-5 or Grok 3 Thinking?

Based on 4 community votes on Rival, Grok 3 Thinking wins 75% of head-to-head matchups against GPT-5.

How are GPT-5 vs Grok 3 Thinking votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 4 votes have been collected for this pair across 14 challenges. All vote data is part of Rival's open dataset.

GPT-5 vs Grok 3 Thinking: Which Is Better?

Updated Aug 2025

Our Verdict

Grok 3 ThinkingWinner

GPT-5Runner-up

Pick Grok 3 Thinking. In 4 blind votes, Grok 3 Thinking wins 75% of the time. That's not luck.

Clear winner

API pricing

Cost per 1M tokens

GPT-5

Input

$1.25

Output

$10.00

Grok 3 Thinking

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

36%

Grok 3 Thinking uses 17.7x more bold

GPT-5

Grok 3 Thinking

65%Vocabulary46%

13wSentence Length19w

0.20Hedging1.11

0.2Bold3.3

4.6Lists2.6

0.00Emoji0.00

0.16Headings0.64

0.03Transitions0.25

Based on 16 + 6 text responses

Research

What we learned reading every model

GPT-5 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

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Grok 3 Thinking vs Llama 4 MaverickNew provider

Grok 3 Thinking vs Claude Opus 4New provider

Updated Aug 2025

Our Verdict

Grok 3 ThinkingWinner

GPT-5Runner-up

Pick Grok 3 Thinking. In 4 blind votes, Grok 3 Thinking wins 75% of the time. That's not luck.

Clear winner

API pricing

Cost per 1M tokens

GPT-5

Input

$1.25

Output

$10.00

Grok 3 Thinking

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

36%

Grok 3 Thinking uses 17.7x more bold

GPT-5

Grok 3 Thinking

65%Vocabulary46%

13wSentence Length19w

0.20Hedging1.11

0.2Bold3.3

4.6Lists2.6

0.00Emoji0.00

0.16Headings0.64

0.03Transitions0.25

Based on 16 + 6 text responses

Research

What we learned reading every model

GPT-5 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

Grok 3 Thinking vs MiniMax M3New provider

Grok 3 Thinking vs Llama 4 MaverickNew provider

Grok 3 Thinking vs Claude Opus 4New provider