OpenRouter
A unified interface for LLMs — one OpenAI-compatible API in front of 400+ models across 70+ providers, with automatic fallback and price/performance routing.
Visit site →Microsoft Foundry Model Router
A trained routing model built into Azure AI Foundry that analyzes each prompt in real time and picks the most cost-effective model that meets a chosen quality bar.
Visit site →Cursor Router
Cursor's intelligent router for coding agents — a classifier trained on live requests that sends routine work to cheaper models and hard problems to frontier reasoning models.
Visit site →Ramp Router
One endpoint across leading closed and open models that automatically sends every request to the lowest-cost model clearing its quality bar, with built-in fallback and spend tracking.
Visit site →Sakana AI — Trinity
An ICLR 2026 paper introducing a lightweight, evolved coordinator that assigns Thinker, Worker, and Verifier roles across a pool of frontier LLMs — routing by role, not just by cost.
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