Grok 4.20 Multi-Agent BetavsHy4 Preview
Hy4 Preview is cheaper than Grok 4.20 Multi-Agent Beta at $0.834/M vs $2/M input tokens.
| Spec | Grok 4.20 Multi-Agent Beta | Hy4 Preview |
|---|---|---|
| Input price | $2/M tokens | $0.834/M tokens |
| Output price | $6/M tokens | $2.501/M tokens |
| Context window | 2.0M tokens | 1.0M tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Mar 2026 | Aug 2026 |
Our Verdict
Grok 4.20 Multi-Agent Beta
Hy4 Preview
Not enough votes to call it. On the specs, nothing separates them.
Too close to call
API pricing
Cost per 1M tokens
Grok 4.20 Multi-Agent Beta
Input
$2.00
Output
$6.00
Hy4 Preview
Input
$0.83
2.4× cheaper
Output
$2.50
2.4× cheaper
Hy4 Preview is cheaper on both: 2.4× input, 2.4× output.
Where to run it
2 hosts
Grok 4.20 Multi-Agent Beta1 host
Hy4 Preview1 host
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
43%
Hy4 Preview uses 40.1x more emoji
Grok 4.20 Multi-Agent Beta
Hy4 Preview
59%Vocabulary53%
16wSentence Length16w
0.41Hedging0.43
2.7Bold5.9
2.4Lists3.8
0.00Emoji0.40
0.26Headings0.67
0.02Transitions0.13
Based on 23 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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