GPT-4vsGrok 4.20 Beta
Grok 4.20 Beta is cheaper than GPT-4 at $2/M vs $30/M input tokens.
| Spec | GPT-4 | Grok 4.20 Beta |
|---|---|---|
| Input price | $30/M tokens | $2/M tokens |
| Output price | $60/M tokens | $6/M tokens |
| Context window | 8K tokens | 2.0M tokens |
| Weights | Closed | Closed |
| Free API (OpenRouter) | No | No |
| Released | May 2023 | Mar 2026 |
Our Verdict
Grok 4.20 Beta
GPT-4Runner-up
Not enough votes to call it. On the specs, Grok 4.20 Beta has the edge: newer, bigger context window.
Grok 4.20 Beta costs 10x less per token.
Too close to call
API pricing
Cost per 1M tokens
GPT-4
Input
$30.00
Output
$60.00
Grok 4.20 Beta
Input
$2.00
15× cheaper
Output
$6.00
10× cheaper
Grok 4.20 Beta is cheaper on both: 15× input, 10× output.
Where to run it
3 hosts
Grok 4.20 Beta1 host
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
47%
Grok 4.20 Beta uses 61.7x more headings
GPT-4
Grok 4.20 Beta
59%Vocabulary57%
18wSentence Length20w
1.10Hedging0.35
0.8Bold4.2
2.5Lists3.7
0.00Emoji0.00
0.00Headings0.62
0.45Transitions0.14
Based on 15 + 23 text responses
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