The AI Gateway: One API for Every Model Provider

Vercel's AI Gateway is a unified API for accessing multiple AI model providers — genuinely useful if you're building AI features and don't want to hand-wire a separate SDK per provider.

One integration point covers Anthropic, OpenAI, and many other providers. Rather than installing and configuring a separate SDK for each model provider you might want to use, the AI Gateway gives you one consistent interface — switching which model you're actually calling becomes a configuration change, not a code rewrite.

Model strings follow a simple "provider/model" format. Through the AI Gateway, you reference a model as a plain string (e.g., "anthropic/claude-sonnet-5") rather than importing and configuring a provider-specific client — the default, recommended approach for AI SDK usage on Vercel.

Observability is built in — you see real usage and cost data across every model you call. Because every request routes through one gateway, you get consistent logging, latency data, and cost tracking regardless of which underlying provider actually served a given request — genuinely useful for comparing providers/models on real, not synthetic, criteria.

Model fallbacks let you configure a backup if your primary model provider has an outage. Rather than your application failing when a specific provider has downtime, the Gateway can automatically fall back to an alternate model — a real reliability improvement for anything AI-feature-dependent in production.

Zero data retention options exist for privacy-sensitive AI usage. Where required, the Gateway supports configurations that avoid retaining request/response data beyond what's needed to serve the request — relevant for genuinely sensitive use cases.

Why this matters for you

Building AI features without locking yourself into one provider's specific SDK — and getting real observability across whichever models you actually use — is the core value proposition here; this course is about using that well.

▶️ Before the next lesson

If you're building anything AI-related on Vercel, look at whether it currently uses a provider-specific SDK directly, or already goes through the AI Gateway — this course's lessons build on knowing your current starting point.