What is the difference between xAI: Grok 4.5 and Solar Pro 3?

xAI: Grok 4.5 is developed by xAI while Solar Pro 3 is developed by Upstage. xAI: Grok 4.5 has a 500K 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, xAI: Grok 4.5 or Solar Pro 3?

It depends on your use case. xAI: Grok 4.5 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 xAI: Grok 4.5 cost compared to Solar Pro 3?

xAI: Grok 4.5 costs $2/M input tokens and Solar Pro 3 costs $0/M input tokens. Solar Pro 3 is $2.00/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 xAI: Grok 4.5 and Solar Pro 3 on Rival?

This page shows a side-by-side comparison of xAI: Grok 4.5 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 xAI: Grok 4.5 and Solar Pro 3?

xAI: Grok 4.5 is developed by xAI while Solar Pro 3 is developed by Upstage. xAI: Grok 4.5 has a 500K 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, xAI: Grok 4.5 or Solar Pro 3?

It depends on your use case. xAI: Grok 4.5 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 xAI: Grok 4.5 cost compared to Solar Pro 3?

xAI: Grok 4.5 costs $2/M input tokens and Solar Pro 3 costs $0/M input tokens. Solar Pro 3 is $2.00/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 xAI: Grok 4.5 and Solar Pro 3 on Rival?

This page shows a side-by-side comparison of xAI: Grok 4.5 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.

xAI: Grok 4.5 vs Solar Pro 3: Which Is Better?

Updated Jul 2026

Our Verdict

xAI: Grok 4.5

Solar Pro 3Runner-up

No community votes yet. On paper, xAI: Grok 4.5 has the edge — newer, bigger context window, major provider backing.

Too close to call

API pricing

Cost per 1M tokens

xAI: Grok 4.5

Input

$2.00

Output

$6.00

Solar Pro 3

Input

$0.000

Output

$0.000

Writing DNA

Style Comparison

Similarity

55%

Solar Pro 3 uses 2.7x more bold

xAI: Grok 4.5

Solar Pro 3

61%Vocabulary50%

16wSentence Length21w

0.23Hedging0.42

2.5Bold6.5

2.4Lists2.2

0.09Emoji0.17

0.48Headings0.56

0.06Transitions0.12

Based on 27 + 18 text responses

Research

What we learned reading every model

xAI: Grok 4.5 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 Claude Sonnet 4New provider

Solar Pro 3 vs xAI: Grok 4Cross-provider

Updated Jul 2026

Our Verdict

xAI: Grok 4.5

Solar Pro 3Runner-up

No community votes yet. On paper, xAI: Grok 4.5 has the edge — newer, bigger context window, major provider backing.

Too close to call

API pricing

Cost per 1M tokens

xAI: Grok 4.5

Input

$2.00

Output

$6.00

Solar Pro 3

Input

$0.000

Output

$0.000

Writing DNA

Style Comparison

Similarity

55%

Solar Pro 3 uses 2.7x more bold

xAI: Grok 4.5

Solar Pro 3

61%Vocabulary50%

16wSentence Length21w

0.23Hedging0.42

2.5Bold6.5

2.4Lists2.2

0.09Emoji0.17

0.48Headings0.56

0.06Transitions0.12

Based on 27 + 18 text responses

Research

What we learned reading every model

xAI: Grok 4.5 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 Claude Sonnet 4New provider

Solar Pro 3 vs xAI: Grok 4Cross-provider