AI model trained on enormous amounts of text that can generate, summarize, translate, and reason over natural language. The foundation of conversational assistants and generative AI tools.
In AI-901: the GPT-5 family (and variants such as GPT-5-mini) are OpenAI's LLMs, accessible via Azure OpenAI in Microsoft Foundry. Related concepts: prompts (instructions to the model), temperature (creativity), tokens (units of text). Difference from classic ML: LLMs are generative models, not just predictive ones.
Large language model (LLM) is a concept that can show up on the exam. Check the full guide to see it in context.