A ChatGPT Plugin is a verified, third-party integration that allows external data sources to respond directly to user prompts within ChatGPT, overriding default model responses with structured, real-time outputs.

• In the context of hallucination defense, a ChatGPT Plugin acts as an authoritative data endpoint, ensuring LLMs return your brand’s official facts rather than generating synthetic approximations.

• Plugins use standardized APIs (e.g., GET endpoints) and manifest files to expose company information in JSON format.

• When installed, the plugin shifts the LLM's answer surface from web-trained interpolation to your controlled knowledge base.