Everything you need to build, test, and scale AI features—without betting your business on a single provider.
// Works with OpenAI, Anthropic, Google, and more
const response = await layer.complete({
gate: "customer-support",
messages: [{
role: "user",
content: "Help me with my order"
}]
});
// Switch providers in the dashboard. No code changes.Every provider has a different API. Switching means rewriting code. One outage can take down your entire product.
Different APIs mean you're stuck with one provider. Switching requires days of engineering work.
No easy way to compare pricing or switch to cheaper models without code changes.
When your provider goes down, your product goes down. No automatic fallbacks.
From routing to testing to optimization. Build on a platform that grows with you.
AI analyzes your task and automatically selects the best model based on cost, speed, and quality.
Configure backup models that kick in automatically when your primary provider fails. Zero downtime.
Real-time monitoring of spend across all providers with detailed per-request breakdowns.
Test different models and prompts against each other. Let data decide which performs best.
Track every change to your prompts. Roll back to previous versions instantly.
Self-host for free with full source access. No vendor lock-in. MIT licensed.
Define your AI routing rules, select models, and configure fallbacks.
Replace your provider-specific code with Layer's unified API.
Change providers in the dashboard without touching your code.
Join developers building AI apps without vendor lock-in. Open source and production-ready.