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Grok 4.20 Beta Non-Reasoning

Grok 4.20 Beta 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 Input
index.ts
import { streamText } from 'ai'


const result = streamText({
  model: 'xai/grok-4.20-non-reasoning-beta',
  prompt: 'Why is the sky blue?'
})
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Frequently Asked Questions

  • What does 'non-reasoning' mean for Grok 4.20 Beta Non-Reasoning?

    The model produces direct answers without generating chain-of-thought reasoning traces. This reduces latency and output token cost compared to the reasoning variant.

  • What is the context window for Grok 4.20 Beta Non-Reasoning?

    2M tokens.

  • Is Grok 4.20 Beta Non-Reasoning in beta?

    Yes. Grok 4.20 Beta Non-Reasoning is currently in beta. Behavior, pricing, or availability may change before general availability.

  • What does Grok 4.20 Beta Non-Reasoning cost?

    Current pricing is shown on this page. AI Gateway routes across providers, and rates may vary by provider.

  • How do I authenticate with Grok 4.20 Beta Non-Reasoning through Vercel AI Gateway?

    Use your Vercel AI Gateway API key with xai/grok-4.20-non-reasoning-beta as the model identifier. No separate xAI account is needed for gateway-managed access.

  • How does Grok 4.20 Beta Non-Reasoning compare to Grok 4.1 Fast Non-Reasoning?

    Grok 4.20 Beta Non-Reasoning is the newer generation with improved hallucination rates and prompt adherence. Grok 4.1 Fast Non-Reasoning is a stable, generally available alternative if you prefer to avoid beta models.

  • Does Vercel AI Gateway support Zero Data Retention for Grok 4.20 Beta Non-Reasoning?

    Zero Data Retention is not currently available for this model. ZDR on AI Gateway applies to direct gateway requests; BYOK flows aren't covered. See https://vercel.com/docs/ai-gateway/capabilities/zdr for details.