What is the difference between Claude Opus 4.8 and DeepSeek R1?

Claude Opus 4.8 is developed by Anthropic while DeepSeek R1 is developed by DeepSeek. Claude Opus 4.8 has a 1.0M token context window vs DeepSeek R1's 128K. 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 R1?

It depends on your use case. Claude Opus 4.8 and DeepSeek R1 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 R1?

Claude Opus 4.8 costs $5/M input tokens and DeepSeek R1 costs $0.55/M input tokens. DeepSeek R1 is $4.45/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 R1 on Rival?

This page shows a side-by-side comparison of Claude Opus 4.8 and DeepSeek R1 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 R1?

Claude Opus 4.8 is developed by Anthropic while DeepSeek R1 is developed by DeepSeek. Claude Opus 4.8 has a 1.0M token context window vs DeepSeek R1's 128K. 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 R1?

It depends on your use case. Claude Opus 4.8 and DeepSeek R1 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 R1?

Claude Opus 4.8 costs $5/M input tokens and DeepSeek R1 costs $0.55/M input tokens. DeepSeek R1 is $4.45/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 R1 on Rival?

This page shows a side-by-side comparison of Claude Opus 4.8 and DeepSeek R1 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 R1: Which Is Better?

Updated May 2026

Our Verdict

Claude Opus 4.8

DeepSeek R1Runner-up

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

DeepSeek R1 is 11x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

Claude Opus 4.8

Input

$5.00

Output

$25.00

DeepSeek R1

Input

$0.55

9.1× cheaper

Output

$2.19

11× cheaper

DeepSeek R1 is cheaper on both — 9.1× input, 11× output

Writing DNA

Style Comparison

Similarity

32%

Claude Opus 4.8 uses 18.0x more emoji

Claude Opus 4.8

DeepSeek R1

60%Vocabulary62%

19wSentence Length15w

0.46Hedging0.52

4.7Bold8.0

3.2Lists5.7

0.78Emoji0.04

1.15Headings0.62

0.04Transitions0.28

Based on 27 + 22 text responses

Research

What we learned reading every model

Claude Opus 4.8 and DeepSeek R1 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

DeepSeek R1 vs MiniMax M3New provider

Claude Opus 4.8 vs Grok 3New provider

Claude Opus 4.8 vs OpenAI o3New provider

Updated May 2026

Our Verdict

Claude Opus 4.8

DeepSeek R1Runner-up

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

DeepSeek R1 is 11x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

Claude Opus 4.8

Input

$5.00

Output

$25.00

DeepSeek R1

Input

$0.55

9.1× cheaper

Output

$2.19

11× cheaper

DeepSeek R1 is cheaper on both — 9.1× input, 11× output

Writing DNA

Style Comparison

Similarity

32%

Claude Opus 4.8 uses 18.0x more emoji

Claude Opus 4.8

DeepSeek R1

60%Vocabulary62%

19wSentence Length15w

0.46Hedging0.52

4.7Bold8.0

3.2Lists5.7

0.78Emoji0.04

1.15Headings0.62

0.04Transitions0.28

Based on 27 + 22 text responses

Research

What we learned reading every model

Claude Opus 4.8 and DeepSeek R1 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

DeepSeek R1 vs MiniMax M3New provider

Claude Opus 4.8 vs Grok 3New provider

Claude Opus 4.8 vs OpenAI o3New provider