Grok 4.3 is now available on Vercel AI Gateway, accessible via the AI SDK by setting the model to xai/grok-4.3. The model ships with a 1 million token context window, a December 2025 knowledge cutoff, and targeted improvements in accuracy, tool calling, and instruction following.
Vercel AI Gateway wraps the model access in a unified API layer that handles usage tracking, cost monitoring, retries, failover, and intelligent provider routing. Built-in observability, custom reporting, and Bring Your Own Key support are included without additional configuration.
The full changelog covers integration specifics, and a live model playground is available for direct testing. The model leaderboard lets you benchmark Grok 4.3 against other models on the gateway before committing it to production.
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