One API for every LLM
200+ models. 40+ providers. Zero code changes.
Stop juggling API keys and provider dashboards. The AI Gateway routes your requests across every major provider through one OpenAI-compatible endpoint — with smart routing, automatic fallback, caching, and guardrails built in.
Migrate by changing one line
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.llmgateway.io/v1",
apiKey: process.env.LLM_GATEWAY_API_KEY,
});
const completion = await client.chat.completions.create({
model: "openai/gpt-5", // or anthropic/claude-*, google/gemini-*, ...
messages: [{ role: "user", content: "Hello!" }],
});Project-scoped API keys
Create keys per project, set usage and spending limits, and rotate them without touching your code.
Built for production traffic
OpenAI-compatible API
Keep your existing SDK and change the base URL — chat completions, embeddings, images, video, speech, and transcription all speak the same format.
Smart routing & fallback
Route by price, latency, throughput, or uptime, and fall back to the next healthy provider automatically when one degrades.
Response caching
Serve repeated requests from Redis-backed cache and pass provider cache controls through — cutting both latency and spend.
Guardrails
Prompt-injection protection, PII detection and redaction, secrets detection, and a custom rules engine — enforced at the gateway.
Key management
Centralized, encrypted provider keys with project-scoped API keys, usage and spending limits, and full audit trails.
Cloud or self-hosted
Use the hosted gateway or deploy the AGPLv3-licensed source on your own infrastructure with Docker, Compose, or Kubernetes.