What is the difference between DeepSeek V3 (March 2024) and GPT-5 Pro?

DeepSeek V3 (March 2024) is developed by DeepSeek while GPT-5 Pro is developed by OpenAI. DeepSeek V3 (March 2024) has a 128K token context window vs GPT-5 Pro's 400K. You can compare their actual outputs across 41 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V3 (March 2024) or GPT-5 Pro?

It depends on your use case. DeepSeek V3 (March 2024) and GPT-5 Pro 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 DeepSeek V3 (March 2024) cost compared to GPT-5 Pro?

DeepSeek V3 (March 2024) costs $0.14/M input tokens and GPT-5 Pro costs $15/M input tokens. DeepSeek V3 (March 2024) is $14.86/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 V3 (March 2024) and GPT-5 Pro on Rival?

This page shows a side-by-side comparison of DeepSeek V3 (March 2024) and GPT-5 Pro 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 V3 (March 2024) and GPT-5 Pro?

DeepSeek V3 (March 2024) is developed by DeepSeek while GPT-5 Pro is developed by OpenAI. DeepSeek V3 (March 2024) has a 128K token context window vs GPT-5 Pro's 400K. You can compare their actual outputs across 41 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V3 (March 2024) or GPT-5 Pro?

It depends on your use case. DeepSeek V3 (March 2024) and GPT-5 Pro 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 DeepSeek V3 (March 2024) cost compared to GPT-5 Pro?

DeepSeek V3 (March 2024) costs $0.14/M input tokens and GPT-5 Pro costs $15/M input tokens. DeepSeek V3 (March 2024) is $14.86/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 V3 (March 2024) and GPT-5 Pro on Rival?

This page shows a side-by-side comparison of DeepSeek V3 (March 2024) and GPT-5 Pro 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 V3 (March 2024) vs GPT-5 Pro: Which Is Better?

Updated Oct 2025

Our Verdict

GPT-5 Pro

DeepSeek V3 (March 2024)Runner-up

No community votes yet. On paper, GPT-5 Pro has the edge — newer, bigger context window.

DeepSeek V3 (March 2024) is 429x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

DeepSeek V3 (March 2024)

Input

$0.14

107× cheaper

Output

$0.28

429× cheaper

GPT-5 Pro

Input

$15.00

Output

$120.00

DeepSeek V3 (March 2024) is cheaper on both — 107× input, 429× output

Writing DNA

Style Comparison

Similarity

21%

DeepSeek V3 (March 2024) uses 748.9x more bold

DeepSeek V3 (March 2024)

GPT-5 Pro

58%Vocabulary65%

18wSentence Length15w

0.73Hedging0.32

7.5Bold0.0

7.6Lists2.9

0.26Emoji0.00

1.60Headings0.00

0.08Transitions0.01

Based on 16 + 11 text responses

Research

What we learned reading every model

DeepSeek V3 (March 2024) and GPT-5 Pro 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 Grok 3New provider

GPT-5 Pro vs Llama 4 MaverickNew provider

Updated Oct 2025

Our Verdict

GPT-5 Pro

DeepSeek V3 (March 2024)Runner-up

No community votes yet. On paper, GPT-5 Pro has the edge — newer, bigger context window.

DeepSeek V3 (March 2024) is 429x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

DeepSeek V3 (March 2024)

Input

$0.14

107× cheaper

Output

$0.28

429× cheaper

GPT-5 Pro

Input

$15.00

Output

$120.00

DeepSeek V3 (March 2024) is cheaper on both — 107× input, 429× output

Writing DNA

Style Comparison

Similarity

21%

DeepSeek V3 (March 2024) uses 748.9x more bold

DeepSeek V3 (March 2024)

GPT-5 Pro

58%Vocabulary65%

18wSentence Length15w

0.73Hedging0.32

7.5Bold0.0

7.6Lists2.9

0.26Emoji0.00

1.60Headings0.00

0.08Transitions0.01

Based on 16 + 11 text responses

Research

What we learned reading every model

DeepSeek V3 (March 2024) and GPT-5 Pro 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 Grok 3New provider

GPT-5 Pro vs Llama 4 MaverickNew provider