What is the difference between GPT-5 Pro and OpenAI: GPT-5.6 Sol?

Both are developed by OpenAI but target different use cases. GPT-5 Pro has a 400K token context window vs OpenAI: GPT-5.6 Sol's 1.1M. You can compare their actual outputs across 41 challenges on Rival to see how they differ in practice.

Which is better, GPT-5 Pro or OpenAI: GPT-5.6 Sol?

It depends on your use case. GPT-5 Pro and OpenAI: GPT-5.6 Sol each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 41 challenges so you can judge which fits your needs best.

How much does GPT-5 Pro cost compared to OpenAI: GPT-5.6 Sol?

GPT-5 Pro costs $15/M input tokens and OpenAI: GPT-5.6 Sol costs $5/M input tokens. OpenAI: GPT-5.6 Sol is $10.00/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare GPT-5 Pro and OpenAI: GPT-5.6 Sol on Rival?

This page shows a side-by-side comparison of GPT-5 Pro and OpenAI: GPT-5.6 Sol 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 Pro and OpenAI: GPT-5.6 Sol?

Both are developed by OpenAI but target different use cases. GPT-5 Pro has a 400K token context window vs OpenAI: GPT-5.6 Sol's 1.1M. You can compare their actual outputs across 41 challenges on Rival to see how they differ in practice.

Which is better, GPT-5 Pro or OpenAI: GPT-5.6 Sol?

It depends on your use case. GPT-5 Pro and OpenAI: GPT-5.6 Sol each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 41 challenges so you can judge which fits your needs best.

How much does GPT-5 Pro cost compared to OpenAI: GPT-5.6 Sol?

GPT-5 Pro costs $15/M input tokens and OpenAI: GPT-5.6 Sol costs $5/M input tokens. OpenAI: GPT-5.6 Sol is $10.00/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare GPT-5 Pro and OpenAI: GPT-5.6 Sol on Rival?

This page shows a side-by-side comparison of GPT-5 Pro and OpenAI: GPT-5.6 Sol 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 Pro vs OpenAI: GPT-5.6 Sol: Which Is Better?

Updated Jul 2026

Our Verdict

OpenAI: GPT-5.6 Sol

GPT-5 ProRunner-up

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

OpenAI: GPT-5.6 Sol is 4.0x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

GPT-5 Pro

Input

$15.00

Output

$120.00

OpenAI: GPT-5.6 Sol

Input

$5.00

3.0× cheaper

Output

$30.00

4.0× cheaper

OpenAI: GPT-5.6 Sol is cheaper on both — 3.0× input, 4.0× output

Writing DNA

Style Comparison

Similarity

68%

OpenAI: GPT-5.6 Sol uses 342.6x more bold

GPT-5 Pro

OpenAI: GPT-5.6 Sol

65%Vocabulary63%

15wSentence Length15w

0.32Hedging0.79

0.0Bold3.4

2.9Lists3.8

0.00Emoji0.03

0.00Headings0.95

0.01Transitions0.08

Based on 11 + 27 text responses

Research

What we learned reading every model

GPT-5 Pro and OpenAI: GPT-5.6 Sol 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 Jul 2026

Our Verdict

OpenAI: GPT-5.6 Sol

GPT-5 ProRunner-up

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

OpenAI: GPT-5.6 Sol is 4.0x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

GPT-5 Pro

Input

$15.00

Output

$120.00

OpenAI: GPT-5.6 Sol

Input

$5.00

3.0× cheaper

Output

$30.00

4.0× cheaper

OpenAI: GPT-5.6 Sol is cheaper on both — 3.0× input, 4.0× output

Writing DNA

Style Comparison

Similarity

68%

OpenAI: GPT-5.6 Sol uses 342.6x more bold

GPT-5 Pro

OpenAI: GPT-5.6 Sol

65%Vocabulary63%

15wSentence Length15w

0.32Hedging0.79

0.0Bold3.4

2.9Lists3.8

0.00Emoji0.03

0.00Headings0.95

0.01Transitions0.08

Based on 11 + 27 text responses

Research

What we learned reading every model

GPT-5 Pro and OpenAI: GPT-5.6 Sol 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 Pro vs MiniMax M3New provider

GPT-5 Pro vs Claude Opus 4.1New provider

GPT-5 Pro vs GPT-5Version compare