GPT-4o Search is a GPT-4o-based multimodal model configured for search-augmented reasoning and grounded, current answers. It follows instructions and uses web search tools to retrieve, evaluate, and synthesize external information, with source context when available. Typical uses include research assistance, fact-checking, news and trend monitoring, and answering time-sensitive queries. Technical highlights include tool/function calling for browsing and retrieval, long-context handling, and structured outputs suitable for citations and links.