What is the difference between Claude Opus 4.8 and DeepSeek V3.1?

Claude Opus 4.8 is developed by Anthropic while DeepSeek V3.1 is developed by DeepSeek. Claude Opus 4.8 has a 1.0M token context window vs DeepSeek V3.1's 164K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.8 or DeepSeek V3.1?

It depends on your use case. Claude Opus 4.8 and DeepSeek V3.1 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 Claude Opus 4.8 cost compared to DeepSeek V3.1?

Claude Opus 4.8 costs $5/M input tokens and DeepSeek V3.1 costs $0.2/M input tokens. DeepSeek V3.1 is $4.80/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 Claude Opus 4.8 and DeepSeek V3.1 on Rival?

This page shows a side-by-side comparison of Claude Opus 4.8 and DeepSeek V3.1 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 Claude Opus 4.8 and DeepSeek V3.1?

Claude Opus 4.8 is developed by Anthropic while DeepSeek V3.1 is developed by DeepSeek. Claude Opus 4.8 has a 1.0M token context window vs DeepSeek V3.1's 164K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.8 or DeepSeek V3.1?

It depends on your use case. Claude Opus 4.8 and DeepSeek V3.1 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 Claude Opus 4.8 cost compared to DeepSeek V3.1?

Claude Opus 4.8 costs $5/M input tokens and DeepSeek V3.1 costs $0.2/M input tokens. DeepSeek V3.1 is $4.80/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 Claude Opus 4.8 and DeepSeek V3.1 on Rival?

This page shows a side-by-side comparison of Claude Opus 4.8 and DeepSeek V3.1 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.

Claude Opus 4.8 vs DeepSeek V3.1: Which Is Better?

Updated May 2026

Our Verdict

Claude Opus 4.8

DeepSeek V3.1Runner-up

No community votes yet. On paper, Claude Opus 4.8 has the edge — newer, bigger context window.

DeepSeek V3.1 is 31x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4.8

Input

$5.00

Output

$25.00

DeepSeek V3.1

Input

$0.20

25× cheaper

Output

$0.80

31× cheaper

DeepSeek V3.1 is cheaper on both — 25× input, 31× output

Writing DNA

Style Comparison

Similarity

26%

Claude Opus 4.8 uses 33.0x more emoji

Claude Opus 4.8

DeepSeek V3.1

60%Vocabulary53%

19wSentence Length14w

0.46Hedging0.42

4.7Bold4.0

3.2Lists3.6

0.78Emoji0.02

1.15Headings0.40

0.04Transitions0.22

Based on 27 + 23 text responses

Research

What we learned reading every model

Claude Opus 4.8 and DeepSeek V3.1 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

Claude Opus 4.8 vs MiniMax M3New provider

Claude Opus 4.8 vs GPT-5New provider

Claude Opus 4.8 vs Gemini 2.5 Pro Preview 06-05New provider

Updated May 2026

Our Verdict

Claude Opus 4.8

DeepSeek V3.1Runner-up

No community votes yet. On paper, Claude Opus 4.8 has the edge — newer, bigger context window.

DeepSeek V3.1 is 31x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4.8

Input

$5.00

Output

$25.00

DeepSeek V3.1

Input

$0.20

25× cheaper

Output

$0.80

31× cheaper

DeepSeek V3.1 is cheaper on both — 25× input, 31× output

Writing DNA

Style Comparison

Similarity

26%

Claude Opus 4.8 uses 33.0x more emoji

Claude Opus 4.8

DeepSeek V3.1

60%Vocabulary53%

19wSentence Length14w

0.46Hedging0.42

4.7Bold4.0

3.2Lists3.6

0.78Emoji0.02

1.15Headings0.40

0.04Transitions0.22

Based on 27 + 23 text responses

Research

What we learned reading every model

Claude Opus 4.8 and DeepSeek V3.1 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

Claude Opus 4.8 vs MiniMax M3New provider

Claude Opus 4.8 vs GPT-5New provider

Claude Opus 4.8 vs Gemini 2.5 Pro Preview 06-05New provider