Claude Sonnet 4vsDeepSeek V4 Pro
DeepSeek V4 Pro is cheaper than Claude Sonnet 4 at $1.74/M vs $3/M input tokens.
| Spec | Claude Sonnet 4 | DeepSeek V4 Pro |
|---|---|---|
| Input price | $3/M tokens | $1.74/M tokens |
| Output price | $15/M tokens | $3.48/M tokens |
| Context window | 200K tokens | 1.0M tokens |
| Weights | Closed | Open |
| Free API (OpenRouter) | No | No |
| Released | May 2025 | Apr 2026 |
Our Verdict
DeepSeek V4 Pro
Claude Sonnet 4Runner-up
Not enough votes to call it. On the specs, DeepSeek V4 Pro has the edge: bigger model tier, newer, bigger context window.
DeepSeek V4 Pro costs 4.3x less per token.
Slight edge
API pricing
Cost per 1M tokens
Claude Sonnet 4
Input
$3.00
Output
$15.00
DeepSeek V4 Pro
Input
$1.74
1.7× cheaper
Output
$3.48
4.3× cheaper
DeepSeek V4 Pro is cheaper on both: 1.7× input, 4.3× output.
Where to run it
17 hosts, cheapest first
Claude Sonnet 42 hosts
DeepSeek V4 Pro15 hosts
Baidu Qianfanfp8$0.87 in$1.74 out1M99.9% upDigitalOcean$0.87 in$1.74 out1M99% upStreamLakefp8$0.87 in$1.74 out1M99.1% upGMI Cloudfp8$0.96 in$1.91 out1M97.9% upDeepInfrafp8$1.30 in$2.60 out1M99.2% upAlibaba Cloudfp8$1.42 in$2.83 out1M99.9% up
9 more hostsFewer hosts
SiliconFlowfp8$1.50 in$3.13 out1M97% upNovitafp8$1.60 in$3.20 out1M100% upVenice$1.65 in$3.30 out1M96.5% upAtlasCloudfp4$1.68 in$3.38 out1M96.1% upBasetenfp4$1.74 in$3.48 out1M98.8% upNextBitfp8$1.80 in$3.55 out1M100% upAzure AI Foundry$1.91 in$3.83 out1M98.9% upFireworksdegraded$1.20 in$1.20 out1M0% upParasailfp8degraded$1.74 in$3.48 out1M98.9% up
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
27%
Claude Sonnet 4 uses 20.0x more emoji
Claude Sonnet 4
DeepSeek V4 Pro
64%Vocabulary57%
81wSentence Length18w
0.56Hedging0.52
4.5Bold3.3
6.6Lists2.3
0.70Emoji0.04
1.59Headings0.45
0.20Transitions0.15
Based on 28 + 27 text responses
Research
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FAQ
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