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Sentinel

Model gateway that routes every request to the cheapest capable model

sentinel-console-xi.vercel.app
Sentinel interface

Overview

What Sentinel does.

Most requests do not need your most expensive model. Sentinel predicts, per tier, whether a cheaper model will answer well, routes accordingly, and keeps an auditable ledger of what each request cost. It speaks the OpenAI API, so it drops in front of existing code.

  • Calibrated per-tier prediction of whether a cheaper model suffices

  • Per-request cost accounting with an auditable ledger

  • W3C trace context propagation for end-to-end tracing

  • Circuit breakers and load-tested failure behaviour

  • OpenAI-compatible, so integration is a base-URL change

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