Compare · ModelsLive · 2 picked · head to head
DeepSeek V4 Pro vs GPT-5.1-Codex
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
DeepSeek V4 Pro wins on 6/8 benchmarks
DeepSeek V4 Pro wins 6 of 8 shared benchmarks. Leads in coding · reasoning · math.
Category leads
coding·DeepSeek V4 Proreasoning·DeepSeek V4 Prolanguage·GPT-5.1-Codexmath·DeepSeek V4 Proknowledge·DeepSeek V4 Pro
Hype vs Reality
Attention vs performance
DeepSeek V4 Pro
#13 by perf·no signal
GPT-5.1-Codex
#27 by perf·no signal
Best value
DeepSeek V4 Pro
9.2x better value than GPT-5.1-Codex
DeepSeek V4 Pro
112.8 pts/$
$0.65/M
GPT-5.1-Codex
12.2 pts/$
$5.63/M
Vendor risk
Mixed exposure
One or more vendors flagged
DeepSeek
$3.4B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
8 benchmarks · 2 models
DeepSeek V4 ProGPT-5.1-Codex
LiveBench · Agentic Coding
DeepSeek V4 Pro leads by +3.3
DeepSeek V4 Pro
56.7
GPT-5.1-Codex
53.3
LiveBench · Coding
GPT-5.1-Codex leads by +1.8
DeepSeek V4 Pro
70.0
GPT-5.1-Codex
71.8
LiveBench · Data Analysis
DeepSeek V4 Pro leads by +13.8
DeepSeek V4 Pro
74.5
GPT-5.1-Codex
60.8
LiveBench · If
GPT-5.1-Codex leads by +1.0
DeepSeek V4 Pro
62.4
GPT-5.1-Codex
63.4
LiveBench · Language
DeepSeek V4 Pro leads by +8.6
DeepSeek V4 Pro
78.1
GPT-5.1-Codex
69.5
LiveBench · Mathematics
DeepSeek V4 Pro leads by +11.1
DeepSeek V4 Pro
90.7
GPT-5.1-Codex
79.6
LiveBench · Overall
DeepSeek V4 Pro leads by +5.0
DeepSeek V4 Pro
73.6
GPT-5.1-Codex
68.6
LiveBench · Reasoning
DeepSeek V4 Pro leads by +0.7
DeepSeek V4 Pro
82.7
GPT-5.1-Codex
82.0
Full benchmark table
| Benchmark | DeepSeek V4 Pro | GPT-5.1-Codex |
|---|---|---|
LiveBench · Agentic Coding | 56.7 | 53.3 |
LiveBench · Coding | 70.0 | 71.8 |
LiveBench · Data Analysis | 74.5 | 60.8 |
LiveBench · If | 62.4 | 63.4 |
LiveBench · Language | 78.1 | 69.5 |
LiveBench · Mathematics | 90.7 | 79.6 |
LiveBench · Overall | 73.6 | 68.6 |
LiveBench · Reasoning | 82.7 | 82.0 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.43 | $0.87 | 1.0M tokens (~524 books) | $5.44 | |
| $1.25 | $10.00 | 400K tokens (~200 books) | $34.38 |