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Grok 4.1 Fast Non-Reasoning

Grok 4.1 Fast Non-Reasoning is xAI's speed-optimized Grok 4.1 Fast model for agentic tool calling. It delivers direct responses without reasoning overhead across a context window of 1M tokens, engineered for high-throughput agent workflows. Your use subject to xAI's Terms & Privacy Policies.

Tool UseFile InputVision (Image)Implicit Caching
Use with AI GatewayView docs
index.ts
import { streamText } from 'ai'


const result = streamText({
  model: 'xai/grok-4.1-fast-non-reasoning',
  prompt: 'Why is the sky blue?'
})
OverviewAboutProvidersThroughputLatencyUptimeStatusSimilarFAQ

Providers

Route requests across multiple providers. Copy a provider slug to set your preference. Visit the docs for more info. Using a provider means you agree to their terms, listed under Legal.

Provider
Context
Max Output
Latency
Throughput
Input
Output
Cache
Web Search
Capabilities
ZDR
No Training
Release Date
Google Vertex AI
Legal:Terms•Privacy
1M1M
0.3s
220tps
$0.20/M
$0.50/M
Read:$0.05/M
Write:—
—
+1
11/19/2025