DeepSeek V4 ProvsGPT-5.1-Codex-Mini
GPT-5.1-Codex-Mini is cheaper than DeepSeek V4 Pro at $1.5/M vs $1.74/M input tokens.
| Spec | DeepSeek V4 Pro | GPT-5.1-Codex-Mini |
|---|---|---|
| Input price | $1.74/M tokens | $1.5/M tokens |
| Output price | $3.48/M tokens | $6/M tokens |
| Context window | 1.0M tokens | 400K tokens |
| Weights | Open | Closed |
| Free API (OpenRouter) | No | No |
| Released | Apr 2026 | Nov 2025 |
Our Verdict
DeepSeek V4 Pro
GPT-5.1-Codex-MiniRunner-up
Not enough votes to call it. On the specs, DeepSeek V4 Pro has the edge: newer, bigger context window.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
DeepSeek V4 Pro
Input
$1.74
Output
$3.48
1.7× cheaper
GPT-5.1-Codex-Mini
Input
$1.50
1.2× cheaper
Output
$6.00
GPT-5.1-Codex-Mini wins input (1.2× cheaper)·DeepSeek V4 Pro wins output (1.7× cheaper)
Where to run it
16 hosts, cheapest first
DeepSeek V4 Pro15 hosts
StreamLakefp8$0.73 in$1.46 out1M96.4% upBaidu Qianfanfp8$0.74 in$1.47 out1M100% upDigitalOcean$0.87 in$1.74 out1M98.7% upGMI Cloudfp8$0.96 in$1.91 out1M99.7% upDeepInfrafp8$1.30 in$2.60 out1M99.4% upAlibaba Cloudfp8$1.42 in$2.83 out1M100% up
9 more hostsFewer hosts
SiliconFlowfp8$1.50 in$3.13 out1M97.3% upNovitafp8$1.60 in$3.20 out1M100% upVenice$1.65 in$3.30 out1M97.2% upAtlasCloudfp4$1.68 in$3.38 out1M99.2% upBasetenfp4$1.74 in$3.48 out1M99.7% upParasailfp8$1.74 in$3.48 out1M99.3% upAzure AI Foundry$1.91 in$3.83 out1M99.3% upNextBitfp8$2.00 in$4.00 out1M99.9% upFireworksdegraded$1.20 in$1.20 out1M0% up
GPT-5.1-Codex-Mini1 host
Per million tokens. Prices and uptime via OpenRouter, checked 12 Sep 2026.
Writing DNA
Style Comparison
Similarity
71%
DeepSeek V4 Pro uses 3.5x more emoji
DeepSeek V4 Pro
GPT-5.1-Codex-Mini
57%Vocabulary68%
18wSentence Length19w
0.52Hedging0.64
3.3Bold2.7
2.3Lists2.6
0.04Emoji0.00
0.45Headings0.10
0.15Transitions0.06
Based on 27 + 17 text responses
Research
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