A large language model (LLM) is the kind of AI behind chat assistants: it reads and writes text. Several companies offer them, including Anthropic, Google and OpenAI, and some open models can run on your own servers. LLM integration means connecting your product to one or more of these in a way you can change later. For you, it avoids betting the product on a single provider's prices and terms.
Models differ in reasoning quality, speed, context length, language coverage and price, and their relative standing shifts every few months. A thin abstraction layer lets a feature switch models, or use different ones per task, without a rewrite. For Indian-language features we compare general models with Indic-focused options, such as AI4Bharat's open models or the government's Bhashini services, using test sets written the way your users write.