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Weflayr is an AI gateway built to give you the highest level of control and quality on dynamic model routing. At its core is benchmark-driven routing: each candidate model is benchmarked on your own past calls, and each new call goes to the model that did best on similar ones. On real agentic use cases, it beats Claude Opus 5.5’s quality by 5 points at 89% lower cost, or by 20 points at 71% lower cost, ahead of classifier-based routers by a wide margin. More details

Benchmark-driven routing

How each call goes to the model that did best on similar past calls.

Production-grade AI

Weflayr’s gateway makes every LLM call reliable, and easy to control & optimize.

Prompt caching optimization

The best caching for each model, applied for you, without locking a conversation on a weak model.

Routing strategies

Stay in control: choose the models, prompt caching rules, quality objective and per-customer rules.

Self-heal

Before each call, unsupported parameters, like temperature or a reasoning effort, are removed or mapped to the closest one, so the provider never refuses them.

Fallback and model health

A failed call moves on to the model’s other providers and regions, or to the next model, and unhealthy deployments are tried last.

How it works

1

Use the gateway, or just log your calls with telemetry, a CSV or via API

Use the Weflayr gateway to call any model of any provider, import past calls from a CSV or via API or use our telemetry instrumentor.
2

Benchmark

Benchmark your calls on dozens of models and define if you want to optimize cost or quality.
3

Route

Create a routing strategy that sends each call to the best model, based on your benchmarks, fallback strategy and/or customer cost rules.
4

Analyze

See your AI cost per feature and your margin per customer once your revenue is in.
5

Repeat

New models come out and your traffic changes: benchmark your recent calls again, and update your routing strategy from the dashboard, with no code to change.

Quickstart

Send your first calls, benchmark them and route them, in a few minutes.

Go further

Platform

Benchmark, route and analyze your calls from the dashboard.

SDKs

Python and Node.js libraries.

API reference

The gateway and the management API.

How it works

The technical details behind routing, evaluation, caching and self-heal.