Summary
Vercel added Grok 4.3 to AI Gateway on May 6, exposing xAI's 1M-context model through the AI SDK and Gateway's unified routing, retries, observability, and BYOK controls. The move keeps AI Gateway positioned as a switching layer across frontier providers rather than a single-model bet.
What changed
Vercel made xAI's Grok 4.3 available through AI Gateway and AI SDK model routing.
Why it matters
For teams comparing frontier models, model availability inside a unified gateway matters as much as the underlying model itself. This strengthens Vercel's role as the abstraction layer for multi-model agent and inference workloads.
Evidence excerpt
Vercel said Grok 4.3 is now available on AI Gateway with a 1M token context window and AI SDK support via xai/grok-4.3.