ModelRefs / BYO-Model Gateway Stack — Architecture Pattern
BYO-Model Gateway Stack — Architecture Pattern
Provider-agnostic gateway abstracting many LLM backends behind one API with policy, routing, and observability.
Overview
A single normalized API in front of many LLM providers and self-hosted models. Centralizes auth, rate limits, cost accounting, routing rules, and observability so app code stays vendor-neutral.
When to use it: You need vendor portability and centralized control across many models.
Pattern details
| Pattern class | hybrid |
|---|---|
| Difficulty | intermediate |
| Topology | microservices |
| Also known as | llm gateway, model router |
| Last reviewed | 2026-06-07 |
Known failure modes
- Provider outage — Single backend down. Mitigation: Failover routing + circuit breakers.
- Adapter drift — Provider quirks leak through. Mitigation: Contract tests per backend.
When not to use it
- Embedding provider SDKs directly in product code when a gateway exists.
Continue your research
Use these connected ModelRefs sections to compare alternatives, inspect implementation paths, and review the evidence and governance boundaries relevant to BYO-Model Gateway Stack — Architecture Pattern.
Frequently asked questions
When should I adopt the BYO-Model Gateway Stack?
You need vendor portability and centralized control across many models.
What are common failure modes of BYO-Model Gateway Stack?
Provider outage • Adapter drift
Is BYO-Model Gateway Stack production-ready?
Yes when paired with the safety controls and observability hooks documented on the pattern page.