Grok 4.20 is now available on in three variants: Reasoning, Non-Reasoning, and Multi-Agent. As xAI's newest flagship model, Grok 4.20 delivers industry-leading speed and agentic tool calling capabilities. It offers a low hallucination rate and strict prompt adherence, producing precise responses.Vercel AI Gateway To use Grok 4.20, set model to , or in the .xai/grok-4.20-non-reasoning-betaxai/grok-4.20-reasoning-betaxai/grok-4.20-multi-agent-betaAI SDK AI Gateway provides a unified API for calling models, tracking usage and cost, and configuring retries, failover, and performance optimizations for higher-than-provider uptime.

It includes built-in , support, and intelligent provider routing with automatic retries.observabilityBring Your Own Key Learn more about , view the or try it in our .AI GatewayAI Gateway model leaderboardmodel playground Read more : Non-reasoning variant optimized for speed and direct responsesGrok 4.20 Non-Reasoning : Extended thinking for complex problem-solving tasksGrok 4.20 Reasoning : Purpose-built for multi-agent orchestration and collaborationGrok 4.20 Multi-Agent