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Grok 4.20 Non-Reasoning

Grok 4.20 Non-Reasoning is xAI's non-reasoning model in the Grok 4.20 beta generation, optimized for speed and direct responses with low hallucination rates and strict prompt adherence.

Tool UseImplicit CachingVision (Image)File InputWeb Search
index.ts
import { streamText } from 'ai'


const result = streamText({
  model: 'xai/grok-4.20-non-reasoning',
  prompt: 'Why is the sky blue?'
})
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About Grok 4.20 Non-Reasoning

Grok 4.20 Non-Reasoning was released March 9, 2026 as part of xAI's Grok 4.20 beta generation. It's optimized for speed and direct responses, producing answers without chain-of-thought reasoning overhead. The model features low hallucination rates and strict prompt adherence, making it suitable for production workloads that need precise, reliable output.

As a non-reasoning variant, Grok 4.20 Non-Reasoning skips intermediate reasoning traces and delivers answers directly. This reduces latency and output token cost per request, which is particularly valuable in high-throughput applications and agentic tool-calling loops where per-step speed compounds into overall workflow efficiency.

This model is currently in beta.