What is the difference between Claude Opus 4 and Solar Pro 3?

Claude Opus 4 is developed by Anthropic while Solar Pro 3 is developed by Upstage. Claude Opus 4 has a 200K token context window vs Solar Pro 3's 128K. You can compare their actual outputs across 39 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4 or Solar Pro 3?

It depends on your use case. Claude Opus 4 and Solar Pro 3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 39 challenges so you can judge which fits your needs best.

How much does Claude Opus 4 cost compared to Solar Pro 3?

Claude Opus 4 costs $15/M input tokens and Solar Pro 3 costs $0/M input tokens. Solar Pro 3 is $15.00/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 Claude Opus 4 and Solar Pro 3 on Rival?

This page shows a side-by-side comparison of Claude Opus 4 and Solar Pro 3 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 Claude Opus 4 and Solar Pro 3?

Claude Opus 4 is developed by Anthropic while Solar Pro 3 is developed by Upstage. Claude Opus 4 has a 200K token context window vs Solar Pro 3's 128K. You can compare their actual outputs across 39 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4 or Solar Pro 3?

It depends on your use case. Claude Opus 4 and Solar Pro 3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 39 challenges so you can judge which fits your needs best.

How much does Claude Opus 4 cost compared to Solar Pro 3?

Claude Opus 4 costs $15/M input tokens and Solar Pro 3 costs $0/M input tokens. Solar Pro 3 is $15.00/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 Claude Opus 4 and Solar Pro 3 on Rival?

This page shows a side-by-side comparison of Claude Opus 4 and Solar Pro 3 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.

Claude Opus 4 vs Solar Pro 3: Which Is Better?

Updated Jan 2026

Our Verdict

Claude Opus 4

Solar Pro 3Runner-up

No community votes yet. On paper, Claude Opus 4 has the edge — bigger model tier, bigger context window, major provider backing.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4

Input

$15.00

Output

$75.00

Solar Pro 3

Input

$0.000

Output

$0.000

Writing DNA

Style Comparison

Similarity

40%

Claude Opus 4 uses 4.1x more lists

Claude Opus 4

Solar Pro 3

64%Vocabulary50%

62wSentence Length21w

0.52Hedging0.42

4.4Bold6.5

9.1Lists2.2

0.11Emoji0.17

1.87Headings0.56

0.27Transitions0.12

Based on 16 + 18 text responses

Research

What we learned reading every model

Claude Opus 4 and Solar Pro 3 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

Solar Pro 3 vs MiniMax M3New provider

Solar Pro 3 vs GPT-5New provider

Solar Pro 3 vs Claude Sonnet 4Cross-provider

Updated Jan 2026

Our Verdict

Claude Opus 4

Solar Pro 3Runner-up

No community votes yet. On paper, Claude Opus 4 has the edge — bigger model tier, bigger context window, major provider backing.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4

Input

$15.00

Output

$75.00

Solar Pro 3

Input

$0.000

Output

$0.000

Writing DNA

Style Comparison

Similarity

40%

Claude Opus 4 uses 4.1x more lists

Claude Opus 4

Solar Pro 3

64%Vocabulary50%

62wSentence Length21w

0.52Hedging0.42

4.4Bold6.5

9.1Lists2.2

0.11Emoji0.17

1.87Headings0.56

0.27Transitions0.12

Based on 16 + 18 text responses

Research

What we learned reading every model

Claude Opus 4 and Solar Pro 3 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

Solar Pro 3 vs MiniMax M3New provider

Solar Pro 3 vs GPT-5New provider

Solar Pro 3 vs Claude Sonnet 4Cross-provider