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This model is no longer in stealth and gets responses from Grok 4 Fast Non-Reasoning–xAI's latest multimodal model with SOTA cost-efficiency and a 2M token context window.
import { streamText } from 'ai'
const result = streamText({ model: 'stealth/sonoma-dusk-alpha', prompt: 'Why is the sky blue?'})
Try out Sonoma Dusk Alpha by Stealth. Usage is billed to your team at API rates. Free users get $5 of credits every 30 days, and you are considered a free user if you haven't made a payment.
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Stealth
Context 2M
Input Tokens $0.20/M
Output Tokens $0.50/M
Cache Read Tokens $0.05/M