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?'})Playground
Try out Grok 4.20 Beta Non-Reasoning by xAI. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.
Grok 4.20 Beta Non-Reasoning
Ask Grok 4.20 Beta Non-Reasoning anything to try it out.
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 |
|---|
xAI | 2M | 0.4s | 161tps | $1.25/M | $2.50/M | Read: $0.2/M Write: — | $5/K + input costs | — | +3 | 03/11/2026 |
P50 throughput on live AI Gateway traffic, in tokens per second (TPS). Visit the docs for more info.
P50 time to first token (TTFT) on live AI Gateway traffic, in milliseconds. View the docs for more info.
Direct request success rate on AI Gateway and per-provider. Visit the docs for more info.
More models by xAI
| Model |
|---|
| 256K | 0.4s | 131tps | $1.00/M | $2.00/M | Read: $0.2/M Write: — | $5/K + input costs | — | +3 | | 05/20/2026 | |||
| 1M | 1.0s | 151tps | $1.25/M | $2.50/M | Read: $0.2/M Write: — | $5/K + input costs | — | +4 |  | 04/30/2026 | |||
| 2M | 0.4s | 152tps | $1.25/M | $2.50/M | Read: $0.2/M Write: — | $5/K + input costs | — | +3 | | 03/10/2026 | |||
| 2M | 0.4s | 140tps | $1.25/M | $2.50/M | Read: $0.2/M Write: — | $5/K + input costs | — | +4 | | 03/10/2026 | |||
| 1M | 0.3s | 122tps | $0.20/M | $0.50/M | Read:$0.05/M Write:— | — | — | +2 | | 11/19/2025 | |||
| 1M | 1.1s | 121tps | $0.20/M | $0.50/M | Read:$0.05/M Write:— | — | — | +3 | | 11/19/2025 |
About Grok 4.20 Beta Non-Reasoning
Grok 4.20 Beta Non-Reasoning was released March 11, 2026 as the beta-tagged variant of xAI's Grok 4.20 non-reasoning model. It produces direct answers without chain-of-thought overhead, optimizing for speed and strict prompt adherence rather than deliberation depth.
The non-reasoning architecture makes Grok 4.20 Beta Non-Reasoning well suited for agentic pipelines where individual steps need fast, deterministic responses: tool selection, structured data extraction, classification, and routing decisions. Low hallucination rates and tight prompt following reduce the need for output validation in automated workflows.
As a beta release, Grok 4.20 Beta Non-Reasoning may receive weight updates or behavior changes before xAI stabilizes it. Teams running production traffic should use the stable grok-4.20-non-reasoning and reserve Grok 4.20 Beta Non-Reasoning for evaluation and staging.
What To Consider When Choosing a Provider
- Configuration: Grok 4.20 Beta Non-Reasoning is in beta. Expect potential changes to behavior, pricing, or availability before general availability.
- Configuration: 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.
- 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.
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.