Chat Completion API

A chat completion API is an interface that accepts structured conversation history and returns next-turn responses from a language model. It abstracts token-level details into user, assistant, and system messages. For engineers building AI messaging products, chat completion APIs simplify session management and context handling, letting teams focus on prompt strategy, UX, and analytics instead of low-level model mechanics. A chat completion API is an interface that accepts structured conversation history and returns the next assistant response from a language model. It abstracts low-level token handling into user, system, and assistant roles. For developers building AI messaging experiences, chat completion APIs simplify context management and allow focus on prompts, UX, and analytics.