What is the difference between DeepSeek V3.1 and GPT-5 Pro?

DeepSeek V3.1 is developed by DeepSeek while GPT-5 Pro is developed by OpenAI. DeepSeek V3.1 has a 164K token context window vs GPT-5 Pro's 400K. You can compare their actual outputs across 42 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V3.1 or GPT-5 Pro?

It depends on your use case. DeepSeek V3.1 and GPT-5 Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 42 challenges so you can judge which fits your needs best.

How much does DeepSeek V3.1 cost compared to GPT-5 Pro?

DeepSeek V3.1 costs $0.2/M input tokens and GPT-5 Pro costs $15/M input tokens. DeepSeek V3.1 is $14.80/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 V3.1 and GPT-5 Pro on Rival?

This page shows a side-by-side comparison of DeepSeek V3.1 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 V3.1 and GPT-5 Pro?

DeepSeek V3.1 is developed by DeepSeek while GPT-5 Pro is developed by OpenAI. DeepSeek V3.1 has a 164K token context window vs GPT-5 Pro's 400K. You can compare their actual outputs across 42 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V3.1 or GPT-5 Pro?

It depends on your use case. DeepSeek V3.1 and GPT-5 Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 42 challenges so you can judge which fits your needs best.

How much does DeepSeek V3.1 cost compared to GPT-5 Pro?

DeepSeek V3.1 costs $0.2/M input tokens and GPT-5 Pro costs $15/M input tokens. DeepSeek V3.1 is $14.80/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 V3.1 and GPT-5 Pro on Rival?

This page shows a side-by-side comparison of DeepSeek V3.1 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.

Updated Oct 2025

DeepSeek V3.1vsGPT-5 Pro

DeepSeek V3.1 is cheaper than GPT-5 Pro at $0.2/M vs $15/M input tokens.

DeepSeek V3.1 and GPT-5 Pro compared across 42 shared prompts
Spec	DeepSeek V3.1	GPT-5 Pro
Input price	$0.2/M tokens	$15/M tokens
Output price	$0.8/M tokens	$120/M tokens
Context window	164K tokens	400K tokens
Released	Aug 2025	Oct 2025
SWE-bench Verified	66.0%	74.9%

Our Verdict

GPT-5 Pro

DeepSeek V3.1Runner-up

Not enough votes to call it. On the specs, GPT-5 Pro has the edge: newer, bigger context window.

DeepSeek V3.1 costs 150x less per token.

Too close to call

What do DeepSeek V3.1 and GPT-5 Pro say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

DeepSeek V3.1

Input

$0.20

75× cheaper

Output

$0.80

150× cheaper

GPT-5 Pro

Input

$15.00

Output

$120.00

DeepSeek V3.1 is cheaper on both — 75× input, 150× output

Writing DNA

Style Comparison

Similarity

52%

DeepSeek V3.1 uses 395.2x more bold

DeepSeek V3.1

GPT-5 Pro

53%Vocabulary65%

14wSentence Length15w

0.42Hedging0.32

4.0Bold0.0

3.6Lists2.9

0.02Emoji0.00

0.40Headings0.00

0.22Transitions0.01

Based on 23 + 11 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

GPT-5 Pro vs Ox AlphaNew provider

GPT-5 Pro vs MiniMax M3New provider

DeepSeek V3.1 vs GPT-5Cross-provider

GPT-5 Pro vs Claude Opus 4New provider

GPT-5 Pro vs Qwen3.6 FlashNew provider

GPT-5 Pro vs Qwen3.6 Max PreviewNew provider

DeepSeek V3.1 vs Qwen3.6 Plus Preview (free)New provider

GPT-5 Pro vs Qwen3.7 MaxNew provider

Updated Oct 2025

DeepSeek V3.1vsGPT-5 Pro

DeepSeek V3.1 is cheaper than GPT-5 Pro at $0.2/M vs $15/M input tokens.

DeepSeek V3.1 and GPT-5 Pro compared across 42 shared prompts
Spec	DeepSeek V3.1	GPT-5 Pro
Input price	$0.2/M tokens	$15/M tokens
Output price	$0.8/M tokens	$120/M tokens
Context window	164K tokens	400K tokens
Released	Aug 2025	Oct 2025
SWE-bench Verified	66.0%	74.9%

Our Verdict

GPT-5 Pro

DeepSeek V3.1Runner-up

Not enough votes to call it. On the specs, GPT-5 Pro has the edge: newer, bigger context window.

DeepSeek V3.1 costs 150x less per token.

Too close to call

What do DeepSeek V3.1 and GPT-5 Pro say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

DeepSeek V3.1

Input

$0.20

75× cheaper

Output

$0.80

150× cheaper

GPT-5 Pro

Input

$15.00

Output

$120.00

DeepSeek V3.1 is cheaper on both — 75× input, 150× output

Writing DNA

Style Comparison

Similarity

52%

DeepSeek V3.1 uses 395.2x more bold

DeepSeek V3.1

GPT-5 Pro

53%Vocabulary65%

14wSentence Length15w

0.42Hedging0.32

4.0Bold0.0

3.6Lists2.9

0.02Emoji0.00

0.40Headings0.00

0.22Transitions0.01

Based on 23 + 11 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

GPT-5 Pro vs Ox AlphaNew provider

GPT-5 Pro vs MiniMax M3New provider

DeepSeek V3.1 vs GPT-5Cross-provider

GPT-5 Pro vs Claude Opus 4New provider

GPT-5 Pro vs Qwen3.6 FlashNew provider

GPT-5 Pro vs Qwen3.6 Max PreviewNew provider

DeepSeek V3.1 vs Qwen3.6 Plus Preview (free)New provider

GPT-5 Pro vs Qwen3.7 MaxNew provider