Claude 3.5 Sonnet vs DeepSeek-R1 Comparison

Comparing Claude 3.5 Sonnet and DeepSeek-R1 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude 3.5 Sonnet and DeepSeek-R1 don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

DeepSeek-R1 costs less

For input processing, Claude 3.5 Sonnet ($3.00/1M tokens) is 5.5x more expensive than DeepSeek-R1 ($0.55/1M tokens).

For output processing, Claude 3.5 Sonnet ($15.00/1M tokens) is 6.8x more expensive than DeepSeek-R1 ($2.19/1M tokens).

In conclusion, Claude 3.5 Sonnet is more expensive than DeepSeek-R1.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Mon Mar 16 2026 • llm-stats.com

Claude 3.5 Sonnet

Input tokens$3.00

Output tokens$15.00

Best providerAnthropic

DeepSeek-R1

Input tokens$0.55

Output tokens$2.19

Best providerDeepSeek

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Context Window

Maximum input and output token capacity

Claude 3.5 Sonnet accepts 200,000 input tokens compared to DeepSeek-R1's 131,072 tokens. Claude 3.5 Sonnet can generate longer responses up to 200,000 tokens, while DeepSeek-R1 is limited to 131,072 tokens.

Claude 3.5 Sonnet

Input200,000 tokens

Output200,000 tokens

DeepSeek-R1

Input131,072 tokens

Output131,072 tokens

Mon Mar 16 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude 3.5 Sonnet supports multimodal inputs, whereas DeepSeek-R1 does not.

Claude 3.5 Sonnet can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude 3.5 Sonnet

Text

Images

Audio

Video

DeepSeek-R1

Text

Images

Audio

Video

License

Usage and distribution terms

Claude 3.5 Sonnet is licensed under a proprietary license, while DeepSeek-R1 uses MIT.

License differences may affect how you can use these models in commercial or open-source projects.

Claude 3.5 Sonnet

Proprietary

Closed source

DeepSeek-R1

MIT

Open weights

Release Timeline

When each model was launched

Claude 3.5 Sonnet was released on 2024-10-22, while DeepSeek-R1 was released on 2025-01-20.

DeepSeek-R1 is 3 months newer than Claude 3.5 Sonnet.

Claude 3.5 Sonnet

Oct 22, 2024

1.4 years ago

DeepSeek-R1

Jan 20, 2025

1.2 years ago

3mo newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

Claude 3.5 Sonnet is available from Anthropic, Bedrock, Google. DeepSeek-R1 is available from DeepSeek, DeepInfra, Together, Fireworks. The availability of providers can affect quality of the model and reliability.