Grok 3 Mini Fast Beta
Grok 3 Mini Fast Beta is the fastest and most cost-efficient model in xAI's Grok 3 family. It combines the compact Grok 3 Mini architecture with speed optimization for maximum throughput at the lowest per-token cost.
Tool Use
index.ts
import { streamText } from 'ai'
const result = streamText({ model: 'xai/grok-3-mini-fast', prompt: 'Why is the sky blue?'})More models by xAI
| Model |
|---|
| 1M | 0.9s | 183tps | $1.25/M | $2.50/M | Read: $0.2/M Write: — | $5/K + input costs | — |  | 04/30/2026 | ||||
| 2M | 0.6s | 125tps | $1.25/M | $2.50/M | Read: $0.2/M Write: — | $5/K + input costs | — |  | 03/09/2026 | ||||
| 2M | 4.3s | 904tps | $1.25/M | $2.50/M | Read: $0.2/M Write: — | $5/K + input costs | — | | 03/09/2026 | ||||
| 2M | 0.4s | 48tps | $1.25/M | $2.50/M | Read: $0.2/M Write: — | $5/K + input costs | — | | 03/09/2026 | ||||
| 1M | 0.2s | 85tps | $0.20/M | $0.50/M | Read:$0.05/M Write:— | — | — | | 07/09/2025 | ||||
| 1M | 0.7s | 343tps | $0.20/M | $0.50/M | Read:$0.05/M Write:— | — | — | | 07/09/2025 |