Grok 4.3 is now available on . The model has a 1M token context window and improvements in accuracy, tool calling, and instruction following.Vercel AI Gateway To use Grok 4.3, set model to in the .xai/grok-4.3AI 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.custom reportingobservabilityBring Your Own Key Learn more about , view the or try it in our .AI GatewayAI Gateway model leaderboardmodel playground Read more