What is the difference between Claude Opus 4.1 and DeepSeek R1 0528?

Claude Opus 4.1 is developed by Anthropic while DeepSeek R1 0528 is developed by DeepSeek. Claude Opus 4.1 has a 200K token context window vs DeepSeek R1 0528's 164K. in 3 community votes on Rival, Claude Opus 4.1 wins 67% of head-to-head matchups. These results are based on blind head-to-head voting across 53 challenges.

Which is better, Claude Opus 4.1 or DeepSeek R1 0528?

Based on 3 community votes on Rival, Claude Opus 4.1 wins 67% of head-to-head matchups against DeepSeek R1 0528.

How much does Claude Opus 4.1 cost compared to DeepSeek R1 0528?

Claude Opus 4.1 costs $15/M input tokens and DeepSeek R1 0528 costs $0/M input tokens. DeepSeek R1 0528 is $15.00/M cheaper per input. The more expensive model wins 67% of duels, so the premium may be justified by quality.

How are Claude Opus 4.1 vs DeepSeek R1 0528 votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 3 votes have been collected for this pair across 53 challenges. All vote data is part of Rival's open dataset.

What is the difference between Claude Opus 4.1 and DeepSeek R1 0528?

Claude Opus 4.1 is developed by Anthropic while DeepSeek R1 0528 is developed by DeepSeek. Claude Opus 4.1 has a 200K token context window vs DeepSeek R1 0528's 164K. in 3 community votes on Rival, Claude Opus 4.1 wins 67% of head-to-head matchups. These results are based on blind head-to-head voting across 53 challenges.

Which is better, Claude Opus 4.1 or DeepSeek R1 0528?

Based on 3 community votes on Rival, Claude Opus 4.1 wins 67% of head-to-head matchups against DeepSeek R1 0528.

How much does Claude Opus 4.1 cost compared to DeepSeek R1 0528?

Claude Opus 4.1 costs $15/M input tokens and DeepSeek R1 0528 costs $0/M input tokens. DeepSeek R1 0528 is $15.00/M cheaper per input. The more expensive model wins 67% of duels, so the premium may be justified by quality.

How are Claude Opus 4.1 vs DeepSeek R1 0528 votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 3 votes have been collected for this pair across 53 challenges. All vote data is part of Rival's open dataset.

Claude Opus 4.1 vs DeepSeek R1 0528: Which Is Better?

Updated Aug 2025

Our Verdict

Claude Opus 4.1Winner

DeepSeek R1 0528Runner-up

Pick Claude Opus 4.1. In 3 blind votes, Claude Opus 4.1 wins 67% of the time. That's not luck.

Clear winner

API pricing

Cost per 1M tokens

Claude Opus 4.1

Input

$15.00

Output

$75.00

DeepSeek R1 0528

Input

$0.000

Output

$0.000

Writing DNA

Style Comparison

Similarity

48%

Claude Opus 4.1 uses 38.4x more emoji

Claude Opus 4.1

DeepSeek R1 0528

61%Vocabulary64%

87wSentence Length10w

0.54Hedging0.30

5.1Bold6.8

6.7Lists4.9

0.38Emoji0.00

1.68Headings0.40

0.13Transitions0.00

Based on 17 + 4 text responses

Research

What we learned reading every model

Claude Opus 4.1 and DeepSeek R1 0528 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 0528 vs MiniMax M3New provider

DeepSeek R1 0528 vs GPT-5New provider

DeepSeek R1 0528 vs Llama 4 MaverickNew provider

Updated Aug 2025

Our Verdict

Claude Opus 4.1Winner

DeepSeek R1 0528Runner-up

Pick Claude Opus 4.1. In 3 blind votes, Claude Opus 4.1 wins 67% of the time. That's not luck.

Clear winner

API pricing

Cost per 1M tokens

Claude Opus 4.1

Input

$15.00

Output

$75.00

DeepSeek R1 0528

Input

$0.000

Output

$0.000

Writing DNA

Style Comparison

Similarity

48%

Claude Opus 4.1 uses 38.4x more emoji

Claude Opus 4.1

DeepSeek R1 0528

61%Vocabulary64%

87wSentence Length10w

0.54Hedging0.30

5.1Bold6.8

6.7Lists4.9

0.38Emoji0.00

1.68Headings0.40

0.13Transitions0.00

Based on 17 + 4 text responses

Research

What we learned reading every model

Claude Opus 4.1 and DeepSeek R1 0528 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 0528 vs MiniMax M3New provider

DeepSeek R1 0528 vs GPT-5New provider

DeepSeek R1 0528 vs Llama 4 MaverickNew provider