Grok 4.20 Multi-Agent BetavsSeed 2.1 Turbo
Seed 2.1 Turbo is cheaper than Grok 4.20 Multi-Agent Beta at $0.5/M vs $2/M input tokens.
| Spec | Grok 4.20 Multi-Agent Beta | Seed 2.1 Turbo |
|---|---|---|
| Input price | $2/M tokens | $0.5/M tokens |
| Output price | $6/M tokens | $2.5/M tokens |
| Context window | 2.0M tokens | 262K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Mar 2026 | Aug 2026 |
Our Verdict
Grok 4.20 Multi-Agent Beta
Seed 2.1 TurboRunner-up
Not enough votes to call it. On the specs, Grok 4.20 Multi-Agent Beta has the edge: bigger model tier, bigger context window, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
Grok 4.20 Multi-Agent Beta
Input
$2.00
Output
$6.00
Seed 2.1 Turbo
Input
$0.50
4.0× cheaper
Output
$2.50
2.4× cheaper
Seed 2.1 Turbo is cheaper on both: 4.0× input, 2.4× output.
Where to run it
2 hosts
Grok 4.20 Multi-Agent Beta1 host
Seed 2.1 Turbo1 host
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
65%
Seed 2.1 Turbo uses 6.6x more emoji
Grok 4.20 Multi-Agent Beta
Seed 2.1 Turbo
59%Vocabulary50%
16wSentence Length27w
0.41Hedging0.27
2.7Bold1.5
2.4Lists2.4
0.00Emoji0.07
0.26Headings1.01
0.02Transitions0.04
Based on 23 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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