# Grok 4.3 on AI Gateway

By Steven Van · 2026-04-30

Grok 4.3 brings a 1M token context window to AI Gateway and is used by setting the model to xai/grok-4.3 in the AI SDK.

xAI's Grok 4.3 is now available on [Vercel](<https://creatorstoolbox.com/tools/vercel>)'s [AI Gateway](<https://vercel.com/ai-gateway/leaderboards>), with a 1M token context window and improvements in accuracy, tool calling, and instruction following. To use it, set the model to **xai/grok-4.3** in the AI 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 custom reporting, observability, Bring Your Own Key support, and intelligent provider routing with automatic retries.

[![](<https://assets.vercel.com/image/upload/contentful/image/e5382hct74si/6mTpZofxZaXoqLWiRMrwVg/444a2908372f9b74327d4df9f02ab7fb/model_leaderboards_og_card.png>)](<https://vercel.com/ai-gateway/leaderboards>)

![Vercel](<https://www.google.com/s2/favicons?domain=vercel.com&sz=128>)

Vercel

The platform for frontend developers — deploy, preview, and scale web apps and AI agents with zero config.

[View Vercel →](<https://creatorstoolbox.com/tools/vercel>)

Sources

[Original source](<https://vercel.com/ai-gateway/leaderboards>)

[Read Grok 4.3 on AI Gateway on Creators Toolbox](<https://creatorstoolbox.com/blog/vercel-grok-4-3-on-ai-gateway>)

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Canonical source: https://creatorstoolbox.com/blog/vercel-grok-4-3-on-ai-gateway