Call AI models across providers with Vercel AI Gateway

import { generateText } from 'ai';
 
const { text } = await generateText({
  model: 'openai/gpt-6-astra',
  prompt: 'Explain AI Gateway in one sentence.',
});
 
console.log(text);

curl https://ai-gateway.vercel.sh/v1/chat/completions \
  -H "Authorization: Bearer $AI_GATEWAY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-6-astra",
    "messages": [
      {
        "role": "user",
        "content": "Explain AI Gateway in one sentence."
      }
    ]
  }'

Vercel AI Gateway gives applications and coding agents shared access to models across providers. It supports modalities including text generation, image generation, video generation, speech, transcription, realtime, embeddings, and reranking. Add files and tool calls where the selected model supports them.

Call AI Gateway from any environment with the AI SDK, OpenAI Chat Completions, OpenAI Responses API, Anthropic Messages, a supported coding agent, or a framework integration.

AI Gateway routes requests across providers and fallback models, then records status, provider, latency, token usage, cost, and every routing attempt. To prefer an inference provider and verify which provider served the request, set a provider order and read the response metadata. Configure budgets, access policies, data handling, and Bring Your Own Key (BYOK) for your team. AI Gateway adds zero markup to provider token prices, including with BYOK.

Your application does not need to run on Vercel. Call AI Gateway from any server, cloud, or local environment with an AI Gateway API key. Vercel deployments can use OpenID Connect (OIDC) instead.

Use AI Gateway when you want these controls without operating your own proxy, database, and routing control plane:

Budgets cover spend billed through AI Gateway system credentials. BYOK spend is metered separately and does not count toward those limits. If a BYOK request fails, AI Gateway can fall back to system credentials. Review the BYOK behavior and soft-cap budget semantics when strict provider-account use or zero-overshoot limits are requirements.

Explore chat platforms and ecosystem integrations, learn how to handle 429 responses, or see the AI Gateway FAQ for common questions about model availability, pricing, and request errors.