Claude Sonnet 4.6 vs DeepSeek V4 Flash
Claude Sonnet 4.6 leads in 3 of 8 categories
Arena ELO
Claude Sonnet 4.6
Cheaper
DeepSeek V4 Flash
Faster
Claude Sonnet 4.6
Detailed Comparison
| Category | Claude Sonnet 4.6 | DeepSeek V4 Flash |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Context Window | 1M WIN | 128K |
| Input Price ($/1M) | $3 | $0.14 WIN |
| Output Price ($/1M) | $15 | $0.28 WIN |
| Arena ELO | 1440 WIN | N/A |
| Coding | 79.6% SWE-bench | N/A |
| Reasoning | 72.5% OSWorld | N/A |
| Speed (tokens/sec) | ~80 t/s WIN | N/A |
| Open Source | No | Yes |
Frequently Asked Questions
Which is cheaper, Claude Sonnet 4.6 or DeepSeek V4 Flash?
DeepSeek V4 Flash is approximately 98% cheaper than Claude Sonnet 4.6 per million tokens.
Which is better for coding, Claude Sonnet 4.6 or DeepSeek V4 Flash?
Claude Sonnet 4.6 scores 79.6% SWE-bench on coding benchmarks, while DeepSeek V4 Flash scores N/A.
Which has a larger context window?
Claude Sonnet 4.6 supports 1M context, while DeepSeek V4 Flash supports 128K.
Is Claude Sonnet 4.6 or DeepSeek V4 Flash open source?
Claude Sonnet 4.6 is proprietary. DeepSeek V4 Flash is open source.
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