Styx – AI gateway that auto-selects the optimal model per request

Summary: Styx is an open-source AI gateway that routes requests to the best model based on prompt complexity, using over 65 models from providers like OpenAI and Google. It features a Go router, Python backend, and Next.js dashboard, supports self-hosting via Docker, and includes cost and latency monitoring with auto-failover.

What it does

Styx analyzes nine prompt signals to classify complexity and automatically selects the appropriate AI model, balancing cost and performance. It offers an interactive setup wizard and a dashboard for managing usage and latency.

Who it's for

Developers and teams needing dynamic AI model routing to optimize costs and performance across multiple providers.

Why it matters

It eliminates manual model selection and reduces overpayment by automatically matching queries to the most suitable AI model.