Claude Sonnet 4 vs DeepSeek V4.1 Flash 1017
Price, context window & benchmark comparison
VS
Compare different models
Verdict: DeepSeek V4.1 Flash 1017 is 40.8× cheaper than Claude Sonnet 4 on a typical 3:1 input/output mix. DeepSeek V4.1 Flash 1017 scores higher on the Artificial Analysis Intelligence Index (28.6 vs 18.9). DeepSeek V4.1 Flash 1017 has the larger context window (1M vs 200K).
| Claude Sonnet 4 | DeepSeek V4.1 Flash 1017 | |
|---|---|---|
| Input price / 1M | $3.00 | $0.098 |
| Output price / 1M | $15.00 | $0.29 |
| Blended price (3:1) | $6.00 | $0.15 |
| Cached input / 1M | $0.30 | $0.0029 |
| Context window | 200K | 1M |
| Max output | 64K | 393K |
| Intelligence index | 18.9 | 28.6 |
| Coding index | 37.6 | — |
| Providers | — | 47 |
| Best provider uptime (30m) | — | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2025-05-22 | 2026-10-17 |
| Retirement | 2026-10-15 | — |
Cost calculator
FAQ
Which is cheaper, Claude Sonnet 4 or DeepSeek V4.1 Flash 1017?
DeepSeek V4.1 Flash 1017 is 40.8× cheaper than Claude Sonnet 4 on a typical 3:1 input/output mix.
Claude Sonnet 4 vs DeepSeek V4.1 Flash 1017: which has a bigger context window?
Claude Sonnet 4: 200,000 tokens. DeepSeek V4.1 Flash 1017: 1,048,576 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Claude Sonnet 4 ≈ $13,500, DeepSeek V4.1 Flash 1017 ≈ $343.00.
More comparisons
Claude Sonnet 4 vs Gemini 4 CarbonClaude Sonnet 4 vs Claude Fable 5.2Claude Sonnet 4 vs Gemini Omni 1.2 FlashClaude Sonnet 4 vs Gemini Omni 1.1 FlashClaude Sonnet 4 vs Hy4Claude Sonnet 4 vs GLM 5.3 FlashX LegalClaude Sonnet 4 vs GPT-6.1 TerraClaude Sonnet 4 vs GPT-6.1 Terra ProClaude Sonnet 4 vs Kimi K3.1 ProClaude Sonnet 4 vs MiniMax M3.1 FlashClaude Sonnet 4 vs Nemotron 3.5 Super VLClaude Sonnet 4 vs Gemini 4 ArgonClaude Sonnet 4 vs Claude Haiku 5.5Claude Sonnet 4 vs Nano Banana 2.1Claude Sonnet 4 vs Mistral Large 4Claude Sonnet 4 vs GPT-6.1 Sol ProDeepSeek V4.1 Flash 1017 vs Gemini 4 CarbonDeepSeek V4.1 Flash 1017 vs Claude Fable 5.2DeepSeek V4.1 Flash 1017 vs Gemini Omni 1.2 FlashDeepSeek V4.1 Flash 1017 vs Gemini Omni 1.1 FlashDeepSeek V4.1 Flash 1017 vs Hy4DeepSeek V4.1 Flash 1017 vs GLM 5.3 FlashX LegalDeepSeek V4.1 Flash 1017 vs GPT-6.1 TerraDeepSeek V4.1 Flash 1017 vs GPT-6.1 Terra Pro