Grok Code Fast 1vsGPT-1
Grok Code Fast 1 has a larger context window than GPT-1 (256K tokens vs 1K tokens).
| Spec | Grok Code Fast 1 | GPT-1 |
|---|---|---|
| Input price | $0.2/M tokens | — |
| Output price | $1.5/M tokens | — |
| Context window | 256K tokens | 1K tokens |
| Weights | — | Open |
| Free API (OpenRouter) | No | — |
| Released | Aug 2025 | Jun 2018 |
Our Verdict
Grok Code Fast 1
GPT-1Runner-up
Not enough votes to call it. On the specs, Grok Code Fast 1 has the edge: bigger model tier, newer, bigger context window.
Slight edge
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Grok Code Fast 1
Input
$0.20
Output
$1.50
GPT-1
Input
—
Output
—
Writing DNA
Style Comparison
Similarity
52%
Grok Code Fast 1 uses 249.7x more bold
Grok Code Fast 1
GPT-1
61%Vocabulary65%
18wSentence Length14w
0.82Hedging0.27
2.5Bold0.0
2.3Lists0.3
0.05Emoji0.00
0.82Headings0.00
0.09Transitions0.41
Based on 29 + 7 text responses
Research
What we learned reading every model
FAQ
Common questions
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