Compare · ModelsLive · 2 picked · head to head
GPT-5.1-Codex-Max vs DeepSeek V4 Pro
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
DeepSeek V4 Pro wins on 4/8 benchmarks
DeepSeek V4 Pro wins 4 of 8 shared benchmarks. Leads in reasoning · math · knowledge.
Category leads
coding·GPT-5.1-Codex-Maxreasoning·DeepSeek V4 Prolanguage·GPT-5.1-Codex-Maxmath·DeepSeek V4 Proknowledge·DeepSeek V4 Pro
Hype vs Reality
Attention vs performance
GPT-5.1-Codex-Max
#16 by perf·no signal
DeepSeek V4 Pro
#13 by perf·no signal
Best value
DeepSeek V4 Pro
8.8x better value than GPT-5.1-Codex-Max
GPT-5.1-Codex-Max
12.8 pts/$
$5.63/M
DeepSeek V4 Pro
112.8 pts/$
$0.65/M
Vendor risk
Mixed exposure
One or more vendors flagged
OpenAI
$840.0B·Tier 1
DeepSeek
$3.4B·Tier 1
Head to head
8 benchmarks · 2 models
GPT-5.1-Codex-MaxDeepSeek V4 Pro
LiveBench · Agentic Coding
GPT-5.1-Codex-Max
56.7
DeepSeek V4 Pro
56.7
LiveBench · Coding
GPT-5.1-Codex-Max leads by +11.4
GPT-5.1-Codex-Max
81.4
DeepSeek V4 Pro
70.0
LiveBench · Data Analysis
DeepSeek V4 Pro leads by +19.7
GPT-5.1-Codex-Max
54.9
DeepSeek V4 Pro
74.5
LiveBench · If
GPT-5.1-Codex-Max leads by +4.8
GPT-5.1-Codex-Max
67.1
DeepSeek V4 Pro
62.4
LiveBench · Language
DeepSeek V4 Pro leads by +2.7
GPT-5.1-Codex-Max
75.4
DeepSeek V4 Pro
78.1
LiveBench · Mathematics
DeepSeek V4 Pro leads by +7.0
GPT-5.1-Codex-Max
83.7
DeepSeek V4 Pro
90.7
LiveBench · Overall
DeepSeek V4 Pro leads by +1.6
GPT-5.1-Codex-Max
72.0
DeepSeek V4 Pro
73.6
LiveBench · Reasoning
GPT-5.1-Codex-Max leads by +1.9
GPT-5.1-Codex-Max
84.6
DeepSeek V4 Pro
82.7
Full benchmark table
| Benchmark | GPT-5.1-Codex-Max | DeepSeek V4 Pro |
|---|---|---|
LiveBench · Agentic Coding | 56.7 | 56.7 |
LiveBench · Coding | 81.4 | 70.0 |
LiveBench · Data Analysis | 54.9 | 74.5 |
LiveBench · If | 67.1 | 62.4 |
LiveBench · Language | 75.4 | 78.1 |
LiveBench · Mathematics | 83.7 | 90.7 |
LiveBench · Overall | 72.0 | 73.6 |
LiveBench · Reasoning | 84.6 | 82.7 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $1.25 | $10.00 | 400K tokens (~200 books) | $34.38 | |
| $0.43 | $0.87 | 1.0M tokens (~524 books) | $5.44 |