Summary
Vercel added DeepSeek V4 Pro and DeepSeek V4 Flash to AI Gateway with a 1M-token context window, then expanded routing by adding Azure as a provider for both models. The newer Azure support gives production users another failover path without requiring application code changes.
What changed
Vercel AI Gateway added DeepSeek V4 Pro and V4 Flash, and later added Azure as an additional provider route for those models.
Why it matters
This broadens Vercel's model layer beyond frontier US vendors while making provider redundancy part of the gateway experience. For teams running agentic coding, long-context reasoning, or high-volume inference through AI Gateway, the Azure route turns model availability into a routing and reliability feature rather than a one-off model listing.
Evidence excerpt
Vercel says DeepSeek V4 Pro and V4 Flash are available on AI Gateway, and that Azure is now a provider for both models with default routing considering Azure automatically.