What is the difference between DeepSeek V4 Flash and Solar Pro 3?

DeepSeek V4 Flash is developed by DeepSeek while Solar Pro 3 is developed by Upstage. DeepSeek V4 Flash has a 1.0M 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, DeepSeek V4 Flash or Solar Pro 3?

It depends on your use case. DeepSeek V4 Flash 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 DeepSeek V4 Flash cost compared to Solar Pro 3?

DeepSeek V4 Flash costs $0.14/M input tokens and Solar Pro 3 costs $0/M input tokens. Solar Pro 3 is $0.14/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 DeepSeek V4 Flash and Solar Pro 3 on Rival?

This page shows a side-by-side comparison of DeepSeek V4 Flash 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 DeepSeek V4 Flash and Solar Pro 3?

DeepSeek V4 Flash is developed by DeepSeek while Solar Pro 3 is developed by Upstage. DeepSeek V4 Flash has a 1.0M 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, DeepSeek V4 Flash or Solar Pro 3?

It depends on your use case. DeepSeek V4 Flash 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 DeepSeek V4 Flash cost compared to Solar Pro 3?

DeepSeek V4 Flash costs $0.14/M input tokens and Solar Pro 3 costs $0/M input tokens. Solar Pro 3 is $0.14/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 DeepSeek V4 Flash and Solar Pro 3 on Rival?

This page shows a side-by-side comparison of DeepSeek V4 Flash 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.

DeepSeek V4 Flash vs Solar Pro 3: Which Is Better?

Updated Apr 2026

Our Verdict

DeepSeek V4 Flash

Solar Pro 3Runner-up

No community votes yet. On paper, DeepSeek V4 Flash has the edge — newer, bigger context window, major provider backing.

Too close to call

API pricing

Cost per 1M tokens

DeepSeek V4 Flash

Input

$0.14

Output

$0.28

Solar Pro 3

Input

$0.000

Output

$0.000

Writing DNA

Style Comparison

Similarity

61%

Solar Pro 3 uses 17.3x more emoji

DeepSeek V4 Flash

Solar Pro 3

54%Vocabulary50%

17wSentence Length21w

0.52Hedging0.42

3.6Bold6.5

2.6Lists2.2

0.00Emoji0.17

0.41Headings0.56

0.19Transitions0.12

Based on 27 + 18 text responses

Research

What we learned reading every model

DeepSeek V4 Flash 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 Aurora AlphaNew provider

Solar Pro 3 vs Claude Sonnet 4New provider

Updated Apr 2026

Our Verdict

DeepSeek V4 Flash

Solar Pro 3Runner-up

No community votes yet. On paper, DeepSeek V4 Flash has the edge — newer, bigger context window, major provider backing.

Too close to call

API pricing

Cost per 1M tokens

DeepSeek V4 Flash

Input

$0.14

Output

$0.28

Solar Pro 3

Input

$0.000

Output

$0.000

Writing DNA

Style Comparison

Similarity

61%

Solar Pro 3 uses 17.3x more emoji

DeepSeek V4 Flash

Solar Pro 3

54%Vocabulary50%

17wSentence Length21w

0.52Hedging0.42

3.6Bold6.5

2.6Lists2.2

0.00Emoji0.17

0.41Headings0.56

0.19Transitions0.12

Based on 27 + 18 text responses

Research

What we learned reading every model

DeepSeek V4 Flash 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 Aurora AlphaNew provider

Solar Pro 3 vs Claude Sonnet 4New provider