Laravel AI Service Layer: Building a Provider-Agnostic Architecture for OpenAI, Gemini, and Claude
Most Laravel AI applications are architecturally fragile: one provider change, one model deprecation, one pricing shift — and the rewrite begins. The Laravel AI service layer pattern fixes this at the structural level, not the SDK level. This article defines the full abstraction — interface, adapters, response DTO, factory resolver, and test fakes — so your business logic never knows or cares which AI vendor is active.