What is the difference between DeepSeek V4 Pro and o1?

DeepSeek V4 Pro is developed by DeepSeek while o1 is developed by OpenAI. DeepSeek V4 Pro has a 1.0M token context window vs o1's 128K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V4 Pro or o1?

It depends on your use case. DeepSeek V4 Pro and o1 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does DeepSeek V4 Pro cost compared to o1?

DeepSeek V4 Pro costs $1.74/M input tokens and o1 costs $15/M input tokens. DeepSeek V4 Pro is $13.26/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 Pro and o1 on Rival?

This page shows a side-by-side comparison of DeepSeek V4 Pro and o1 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 Pro and o1?

DeepSeek V4 Pro is developed by DeepSeek while o1 is developed by OpenAI. DeepSeek V4 Pro has a 1.0M token context window vs o1's 128K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V4 Pro or o1?

It depends on your use case. DeepSeek V4 Pro and o1 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does DeepSeek V4 Pro cost compared to o1?

DeepSeek V4 Pro costs $1.74/M input tokens and o1 costs $15/M input tokens. DeepSeek V4 Pro is $13.26/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 Pro and o1 on Rival?

This page shows a side-by-side comparison of DeepSeek V4 Pro and o1 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 Pro vs o1: Which Is Better?

Updated Apr 2026

Our Verdict

DeepSeek V4 Pro

o1Runner-up

No community votes yet. On paper, DeepSeek V4 Pro has the edge — bigger model tier, newer, bigger context window.

DeepSeek V4 Pro is 17x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

DeepSeek V4 Pro

Input

$1.74

8.6× cheaper

Output

$3.48

17× cheaper

Input

$15.00

Output

$60.00

DeepSeek V4 Pro is cheaper on both — 8.6× input, 17× output

Writing DNA

Style Comparison

Similarity

58%

DeepSeek V4 Pro uses 3.5x more emoji

DeepSeek V4 Pro

57%Vocabulary64%

18wSentence Length16w

0.52Hedging0.76

3.3Bold5.0

2.3Lists2.6

0.04Emoji0.00

0.45Headings0.44

0.15Transitions0.40

Based on 27 + 13 text responses

Research

What we learned reading every model

DeepSeek V4 Pro and o1 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

o1 vs MiniMax M3New provider

o1 vs Claude Opus 4New provider

o1 vs Gemini 2.5 Pro Preview 06-05New provider

Updated Apr 2026

Our Verdict

DeepSeek V4 Pro

o1Runner-up

No community votes yet. On paper, DeepSeek V4 Pro has the edge — bigger model tier, newer, bigger context window.

DeepSeek V4 Pro is 17x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

DeepSeek V4 Pro

Input

$1.74

8.6× cheaper

Output

$3.48

17× cheaper

Input

$15.00

Output

$60.00

DeepSeek V4 Pro is cheaper on both — 8.6× input, 17× output

Writing DNA

Style Comparison

Similarity

58%

DeepSeek V4 Pro uses 3.5x more emoji

DeepSeek V4 Pro

57%Vocabulary64%

18wSentence Length16w

0.52Hedging0.76

3.3Bold5.0

2.3Lists2.6

0.04Emoji0.00

0.45Headings0.44

0.15Transitions0.40

Based on 27 + 13 text responses

Research

What we learned reading every model

DeepSeek V4 Pro and o1 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

o1 vs MiniMax M3New provider

o1 vs Claude Opus 4New provider

o1 vs Gemini 2.5 Pro Preview 06-05New provider