Compare · ModelsLive · 2 picked · head to head
GPT-5.1-Codex vs Grok Build 0.1
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Grok Build 0.1 wins on 4/8 benchmarks
Grok Build 0.1 wins 4 of 8 shared benchmarks. Leads in reasoning · language · knowledge.
Category leads
coding·GPT-5.1-Codexreasoning·Grok Build 0.1language·Grok Build 0.1math·GPT-5.1-Codexknowledge·Grok Build 0.1
Hype vs Reality
Attention vs performance
GPT-5.1-Codex
#27 by perf·no signal
Grok Build 0.1
#24 by perf·no signal
Best value
Grok Build 0.1
3.8x better value than GPT-5.1-Codex
GPT-5.1-Codex
12.2 pts/$
$5.63/M
Grok Build 0.1
45.9 pts/$
$1.50/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
xAI
$250.0B·Tier 1
Head to head
8 benchmarks · 2 models
GPT-5.1-CodexGrok Build 0.1
LiveBench · Agentic Coding
GPT-5.1-Codex
53.3
Grok Build 0.1
53.3
LiveBench · Coding
GPT-5.1-Codex leads by +6.4
GPT-5.1-Codex
71.8
Grok Build 0.1
65.4
LiveBench · Data Analysis
Grok Build 0.1 leads by +10.0
GPT-5.1-Codex
60.8
Grok Build 0.1
70.8
LiveBench · If
Grok Build 0.1 leads by +1.8
GPT-5.1-Codex
63.4
Grok Build 0.1
65.2
LiveBench · Language
Grok Build 0.1 leads by +3.0
GPT-5.1-Codex
69.5
Grok Build 0.1
72.5
LiveBench · Mathematics
GPT-5.1-Codex leads by +1.1
GPT-5.1-Codex
79.6
Grok Build 0.1
78.4
LiveBench · Overall
Grok Build 0.1 leads by +0.3
GPT-5.1-Codex
68.6
Grok Build 0.1
68.9
LiveBench · Reasoning
GPT-5.1-Codex leads by +5.6
GPT-5.1-Codex
82.0
Grok Build 0.1
76.4
Full benchmark table
| Benchmark | GPT-5.1-Codex | Grok Build 0.1 |
|---|---|---|
LiveBench · Agentic Coding | 53.3 | 53.3 |
LiveBench · Coding | 71.8 | 65.4 |
LiveBench · Data Analysis | 60.8 | 70.8 |
LiveBench · If | 63.4 | 65.2 |
LiveBench · Language | 69.5 | 72.5 |
LiveBench · Mathematics | 79.6 | 78.4 |
LiveBench · Overall | 68.6 | 68.9 |
LiveBench · Reasoning | 82.0 | 76.4 |
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 | |
| $1.00 | $2.00 | 256K tokens (~128 books) | $12.50 |
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