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Claude Sonnet 4.6 vs DeepSeek V4

Claude Sonnet 4.6 leads in 3 of 8 categories

Arena ELO

Claude Sonnet 4.6

Cheaper

DeepSeek V4

Faster

Claude Sonnet 4.6

Detailed Comparison

CategoryClaude Sonnet 4.6DeepSeek V4
ProviderAnthropic DeepSeek
Context Window1M WIN128K
Input Price ($/1M)$3 $0.435 WIN
Output Price ($/1M)$15 $0.87 WIN
Arena ELO1440 WINN/A
Coding79.6% SWE-bench N/A
Reasoning72.5% OSWorld N/A
Speed (tokens/sec)~80 t/s WINN/A
Open SourceNo Yes

Frequently Asked Questions

Which is cheaper, Claude Sonnet 4.6 or DeepSeek V4?

DeepSeek V4 is approximately 93% cheaper than Claude Sonnet 4.6 per million tokens.

Which is better for coding, Claude Sonnet 4.6 or DeepSeek V4?

Claude Sonnet 4.6 scores 79.6% SWE-bench on coding benchmarks, while DeepSeek V4 scores N/A.

Which has a larger context window?

Claude Sonnet 4.6 supports 1M context, while DeepSeek V4 supports 128K.

Is Claude Sonnet 4.6 or DeepSeek V4 open source?

Claude Sonnet 4.6 is proprietary. DeepSeek V4 is open source.

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