What is the difference between Claude Opus 4.6 and DeepSeek R1?

Claude Opus 4.6 is developed by Anthropic while DeepSeek R1 is developed by DeepSeek. Claude Opus 4.6 has a 1.0M token context window vs DeepSeek R1's 128K. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.6 or DeepSeek R1?

It depends on your use case. Claude Opus 4.6 and DeepSeek R1 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 52 challenges so you can judge which fits your needs best.

How much does Claude Opus 4.6 cost compared to DeepSeek R1?

Claude Opus 4.6 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 4.6 and DeepSeek R1 on Rival?

This page shows a side-by-side comparison of Claude Opus 4.6 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 4.6 and DeepSeek R1?

Claude Opus 4.6 is developed by Anthropic while DeepSeek R1 is developed by DeepSeek. Claude Opus 4.6 has a 1.0M token context window vs DeepSeek R1's 128K. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.6 or DeepSeek R1?

It depends on your use case. Claude Opus 4.6 and DeepSeek R1 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 52 challenges so you can judge which fits your needs best.

How much does Claude Opus 4.6 cost compared to DeepSeek R1?

Claude Opus 4.6 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 4.6 and DeepSeek R1 on Rival?

This page shows a side-by-side comparison of Claude Opus 4.6 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.

Updated Feb 2026

Claude Opus 4.6vsDeepSeek R1

DeepSeek R1 is cheaper than Claude Opus 4.6 at $0.55/M vs $5/M input tokens.

Claude Opus 4.6 and DeepSeek R1 compared across 52 shared prompts
Spec	Claude Opus 4.6	DeepSeek R1
Input price	$5/M tokens	$0.55/M tokens
Output price	$25/M tokens	$2.19/M tokens
Context window	1.0M tokens	128K tokens
Released	Feb 2026	Feb 2025
SWE-bench Verified	80.8%	49.2%

Our Verdict

Claude Opus 4.6

DeepSeek R1Runner-up

Not enough votes to call it. On the specs, Claude Opus 4.6 has the edge: bigger model tier, newer, bigger context window.

DeepSeek R1 costs 11x less per token.

Slight edge

What do Claude Opus 4.6 and DeepSeek R1 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Claude Opus 4.6

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%

DeepSeek R1 uses 10.1x more transitions

Claude Opus 4.6

DeepSeek R1

53%Vocabulary62%

35wSentence Length15w

0.68Hedging0.52

5.2Bold8.0

2.9Lists5.7

0.21Emoji0.04

1.34Headings0.62

0.03Transitions0.28

Based on 23 + 22 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

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Claude Opus 4.6 vs Gemini 2.5 Pro (I/O Edition)New provider

Claude Opus 4.6 vs Gemini 2.5 Pro Preview 06-05New provider

DeepSeek R1 vs Qwen3.6 FlashNew provider

DeepSeek R1 vs Qwen3.6 Max PreviewNew provider

Claude Opus 4.6 vs Qwen3.6 Plus Preview (free)New provider

DeepSeek R1 vs Qwen3.7 MaxNew provider

Updated Feb 2026

Claude Opus 4.6vsDeepSeek R1

DeepSeek R1 is cheaper than Claude Opus 4.6 at $0.55/M vs $5/M input tokens.

Claude Opus 4.6 and DeepSeek R1 compared across 52 shared prompts
Spec	Claude Opus 4.6	DeepSeek R1
Input price	$5/M tokens	$0.55/M tokens
Output price	$25/M tokens	$2.19/M tokens
Context window	1.0M tokens	128K tokens
Released	Feb 2026	Feb 2025
SWE-bench Verified	80.8%	49.2%

Our Verdict

Claude Opus 4.6

DeepSeek R1Runner-up

Not enough votes to call it. On the specs, Claude Opus 4.6 has the edge: bigger model tier, newer, bigger context window.

DeepSeek R1 costs 11x less per token.

Slight edge

What do Claude Opus 4.6 and DeepSeek R1 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Claude Opus 4.6

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%

DeepSeek R1 uses 10.1x more transitions

Claude Opus 4.6

DeepSeek R1

53%Vocabulary62%

35wSentence Length15w

0.68Hedging0.52

5.2Bold8.0

2.9Lists5.7

0.21Emoji0.04

1.34Headings0.62

0.03Transitions0.28

Based on 23 + 22 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

DeepSeek R1 vs MiniMax M3New provider

DeepSeek R1 vs Ox AlphaNew provider

Claude Opus 4.6 vs Gemini 2.5 Pro (I/O Edition)New provider

Claude Opus 4.6 vs Gemini 2.5 Pro Preview 06-05New provider

DeepSeek R1 vs Qwen3.6 FlashNew provider

DeepSeek R1 vs Qwen3.6 Max PreviewNew provider

Claude Opus 4.6 vs Qwen3.6 Plus Preview (free)New provider

DeepSeek R1 vs Qwen3.7 MaxNew provider