What is the difference between GPT-5.6 Sol and Grok 3 Thinking?

GPT-5.6 Sol is developed by OpenAI while Grok 3 Thinking is developed by xAI. GPT-5.6 Sol has a 1.1M token context window vs Grok 3 Thinking's 128K. You can compare their actual outputs across 13 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.6 Sol or Grok 3 Thinking?

It depends on your use case. GPT-5.6 Sol and Grok 3 Thinking each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 13 challenges so you can judge which fits your needs best.

How can I compare GPT-5.6 Sol and Grok 3 Thinking on Rival?

This page shows a side-by-side comparison of GPT-5.6 Sol 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-5.6 Sol and Grok 3 Thinking?

GPT-5.6 Sol is developed by OpenAI while Grok 3 Thinking is developed by xAI. GPT-5.6 Sol has a 1.1M token context window vs Grok 3 Thinking's 128K. You can compare their actual outputs across 13 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.6 Sol or Grok 3 Thinking?

It depends on your use case. GPT-5.6 Sol and Grok 3 Thinking each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 13 challenges so you can judge which fits your needs best.

How can I compare GPT-5.6 Sol and Grok 3 Thinking on Rival?

This page shows a side-by-side comparison of GPT-5.6 Sol 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-5.6 Sol vs Grok 3 Thinking: Which Is Better?

Updated Jul 2026

Our Verdict

GPT-5.6 Sol

Grok 3 ThinkingRunner-up

No community votes yet. On paper, GPT-5.6 Sol has the edge — newer, bigger context window.

Too close to call

What do GPT-5.6 Sol and Grok 3 Thinking say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

GPT-5.6 Sol

Input

$5.00

Output

$30.00

Grok 3 Thinking

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

57%

GPT-5.6 Sol uses 3.3x more emoji

GPT-5.6 Sol

Grok 3 Thinking

63%Vocabulary46%

15wSentence Length19w

0.79Hedging1.11

3.4Bold3.3

3.8Lists2.6

0.03Emoji0.00

0.95Headings0.64

0.08Transitions0.25

Based on 27 + 6 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Grok 3 Thinking vs MiniMax M3New provider

Grok 3 Thinking vs Claude Opus 4.1New provider

Grok 3 Thinking vs Ox AlphaNew provider

Updated Jul 2026

Our Verdict

GPT-5.6 Sol

Grok 3 ThinkingRunner-up

No community votes yet. On paper, GPT-5.6 Sol has the edge — newer, bigger context window.

Too close to call

What do GPT-5.6 Sol and Grok 3 Thinking say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

GPT-5.6 Sol

Input

$5.00

Output

$30.00

Grok 3 Thinking

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

57%

GPT-5.6 Sol uses 3.3x more emoji

GPT-5.6 Sol

Grok 3 Thinking

63%Vocabulary46%

15wSentence Length19w

0.79Hedging1.11

3.4Bold3.3

3.8Lists2.6

0.03Emoji0.00

0.95Headings0.64

0.08Transitions0.25

Based on 27 + 6 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Grok 3 Thinking vs MiniMax M3New provider

Grok 3 Thinking vs Claude Opus 4.1New provider

Grok 3 Thinking vs Ox AlphaNew provider