GPT-6 AstravsGrok 4.20 Multi-Agent Beta
Grok 4.20 Multi-Agent Beta is cheaper than GPT-6 Astra at $2/M vs $10/M input tokens.
| Spec | GPT-6 Astra | Grok 4.20 Multi-Agent Beta |
|---|---|---|
| Input price | $10/M tokens | $2/M tokens |
| Output price | $50/M tokens | $6/M tokens |
| Context window | 1.1M tokens | 2.0M tokens |
| Weights | Closed | Closed |
| Free API (OpenRouter) | No | No |
| Released | Sep 2026 | Mar 2026 |
Our Verdict
GPT-6 Astra
Grok 4.20 Multi-Agent Beta
Not enough votes to call it. On the specs, nothing separates them.
Grok 4.20 Multi-Agent Beta costs 8.3x less per token.
Too close to call
API pricing
Cost per 1M tokens
GPT-6 Astra
Input
$10.00
Output
$50.00
Grok 4.20 Multi-Agent Beta
Input
$2.00
5.0× cheaper
Output
$6.00
8.3× cheaper
Grok 4.20 Multi-Agent Beta is cheaper on both: 5.0× input, 8.3× output.
Where to run it
3 hosts
Grok 4.20 Multi-Agent Beta1 host
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
78%
GPT-6 Astra uses 3.6x more emoji
GPT-6 Astra
Grok 4.20 Multi-Agent Beta
62%Vocabulary59%
15wSentence Length16w
0.87Hedging0.41
4.0Bold2.7
2.3Lists2.4
0.04Emoji0.00
0.77Headings0.26
0.10Transitions0.02
Based on 27 + 23 text responses
Research
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FAQ
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