Claude Sonnet 4.6 vs DeepSeek-V3 Comparison

Comparing Claude Sonnet 4.6 and DeepSeek-V3 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Claude Sonnet 4.6 outperforms in 2 benchmarks (GPQA, SWE-Bench Verified), while DeepSeek-V3 is better at 0 benchmarks.

Claude Sonnet 4.6 significantly outperforms across most benchmarks.

Tue Mar 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

DeepSeek-V3 costs less

For input processing, Claude Sonnet 4.6 ($3.00/1M tokens) is 11.1x more expensive than DeepSeek-V3 ($0.27/1M tokens).

For output processing, Claude Sonnet 4.6 ($15.00/1M tokens) is 13.6x more expensive than DeepSeek-V3 ($1.10/1M tokens).

In conclusion, Claude Sonnet 4.6 is more expensive than DeepSeek-V3.*

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

Lowest available price from all providers

Tue Mar 17 2026 • llm-stats.com

Claude Sonnet 4.6

Input tokens$3.00

Output tokens$15.00

Best providerAnthropic

DeepSeek-V3

Input tokens$0.27

Output tokens$1.10

Best providerDeepSeek

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Context Window

Maximum input and output token capacity

Claude Sonnet 4.6 accepts 200,000 input tokens compared to DeepSeek-V3's 131,072 tokens. DeepSeek-V3 can generate longer responses up to 131,072 tokens, while Claude Sonnet 4.6 is limited to 64,000 tokens.

Claude Sonnet 4.6

Input200,000 tokens

Output64,000 tokens

DeepSeek-V3

Input131,072 tokens

Output131,072 tokens

Tue Mar 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Sonnet 4.6 supports multimodal inputs, whereas DeepSeek-V3 does not.

Claude Sonnet 4.6 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Sonnet 4.6

Text

Images

Audio

Video

DeepSeek-V3

Text

Images

Audio

Video

License

Usage and distribution terms

Claude Sonnet 4.6 is licensed under a proprietary license, while DeepSeek-V3 uses MIT + Model License (Commercial use allowed).

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

Claude Sonnet 4.6

Proprietary

Closed source

DeepSeek-V3

MIT + Model License (Commercial use allowed)

Open weights

Release Timeline

When each model was launched

Claude Sonnet 4.6 was released on 2026-02-17, while DeepSeek-V3 was released on 2024-12-25.

Claude Sonnet 4.6 is 14 months newer than DeepSeek-V3.

Claude Sonnet 4.6

Feb 17, 2026

4 weeks ago

1.1yr newer

DeepSeek-V3

Dec 25, 2024

1.2 years ago

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 Sonnet 4.6 is available from Anthropic. DeepSeek-V3 is available from DeepSeek. The availability of providers can affect quality of the model and reliability.