Grok 4 Fast (free)vsPony Alpha
Grok 4 Fast (free) has a larger context window than Pony Alpha (2.0M tokens vs 200K tokens).
| Spec | Grok 4 Fast (free) | Pony Alpha |
|---|---|---|
| Input price | Free | Free |
| Output price | Free | Free |
| Context window | 2.0M tokens | 200K tokens |
| Free API (OpenRouter) | No | No |
| Released | Sep 2025 | Feb 2026 |
Our Verdict
Grok 4 Fast (free)
Pony Alpha
Not enough votes to call it. On the specs, nothing separates them.
Too close to call
API pricing
Cost per 1M tokens
Grok 4 Fast (free)
Input
$0.000
Output
$0.000
Pony Alpha
Input
$0.000
Output
$0.000
Writing DNA
Style Comparison
Similarity
46%
Pony Alpha uses 4.3x more bold
Grok 4 Fast (free)
Pony Alpha
65%Vocabulary52%
13wSentence Length15w
0.56Hedging0.40
1.4Bold5.9
2.5Lists4.4
0.00Emoji0.00
1.58Headings0.71
0.28Transitions0.23
Based on 14 + 20 text responses
Research
What we learned reading every model
FAQ
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