LLM-Agnostic Architecture

An LLM-agnostic architecture is a way of building software so it works with large language models (LLMs) from different providers, rather than being tied to one. The application talks to models through a common layer, so a model can be added, swapped or used as a fallback without rewriting the product.

This protects against one provider's price changes, outages or rate limits, and lets each task use the model that suits it, such as a fast model for simple steps and a stronger one for analysis. It also lets a company bring its own model accounts and keep control of spend.

For example, if one provider slows down during a busy hour, an LLM-agnostic system sends the next request to another model, and the person asking never notices.