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.
import { streamText } from 'ai'
const result = streamText({ model: 'xai/grok-4.20-non-reasoning-beta', prompt: 'Why is the sky blue?'})What To Consider When Choosing a Provider
Zero Data Retention
AI Gateway does not currently support Zero Data Retention for this model. See the documentation for models that support ZDR.Authentication
AI Gateway authenticates requests using an API key or OIDC token. You do not need to manage provider credentials directly.
Grok 4.20 Beta Non-Reasoning is in beta. Expect potential changes to behavior, pricing, or availability before general availability.
This variant produces direct answers. If you need the model to reason through complex problems step by step, use the Grok 4.20 Reasoning variant instead.
When to Use Grok 4.20 Beta Non-Reasoning
Best For
High-throughput production APIs:
Direct, precise answers at low latency serve end users best
Agentic tool-calling workflows
That benefit from fast decision-making with low hallucination rates
Classification and routing pipelines
That need reliable, prompt-adherent output for downstream processing
Chat and conversational interfaces:
Low-hallucination, prompt-adherent responses arrive quickly without chain-of-thought overhead
Content generation tasks
Where strict prompt adherence matters more than deep reasoning
Consider Alternatives When
Complex analytical tasks
Requiring multi-step reasoning. Use the Grok 4.20 Reasoning variant
Multi-agent orchestration:
The Grok 4.20 Multi-Agent variant is purpose-built for agent collaboration
Stable production deployments:
Beta models introduce unwanted risk. Use Grok 4.1 Fast Non-Reasoning instead
Maximum cost efficiency on simple tasks:
Grok 3 Mini Fast offers lower per-token costs
Conclusion
Grok 4.20 Beta Non-Reasoning trades reasoning depth for speed. Use it in agentic pipelines where fast, direct responses matter more than extended deliberation. For production stability, prefer the non-beta grok-4.20-non-reasoning.
FAQ
The model produces direct answers without generating chain-of-thought reasoning traces. This reduces latency and output token cost compared to the reasoning variant.
2M tokens.
Yes. Grok 4.20 Beta Non-Reasoning is currently in beta. Behavior, pricing, or availability may change before general availability.
Current pricing is shown on this page. AI Gateway routes across providers, and rates may vary by provider.
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.
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.
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.
