{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@context": "https://schema.org",
      "@type": "DefinedTerm",
      "@id": "https://geostack.co/wiki/chatgpt",
      "name": "ChatGPT",
      "description": "ChatGPT is OpenAI's conversational AI assistant, launched in November 2022. With over 200 million weekly active users, it's the most widely used AI assistant globally and a primary channel for brand discovery through AI search.",
      "inDefinedTermSet": {
        "@type": "DefinedTermSet",
        "name": "GeoStack Encyclopedia",
        "url": "https://geostack.co/wiki/"
      },
      "dateModified": "2026-06-25",
      "category": "AI Engines",
      "url": "https://geostack.co/wiki/chatgpt",
      "citation": [
        {
          "@type": "CreativeWork",
          "name": "ChatGPT product page",
          "url": "https://chat.openai.com"
        }
      ],
      "alternateName": "OpenAI ChatGPT",
      "audience": "beginner",
      "sameAs": [
        "https://en.wikipedia.org/wiki/ChatGPT",
        "https://www.wikidata.org/wiki/Q56558406"
      ],
      "keywords": "200M+ weekly active users as of late 2024 — largest AI assistant by reach | Powered by GPT family (GPT-3.5, GPT-4, GPT-4o, GPT-4.1); GPT-5 expected 2025-2026 | Primary GEO channel: brand mentions in ChatGPT answers influence purchase decisions | Citation format: ChatGPT cites inline numbered references when web search is enabled"
    },
    {
      "@type": "FAQPage",
      "mainEntity": [
        {
          "@type": "Question",
          "name": "When was ChatGPT launched?",
          "acceptedAnswer": {
            "@type": "Answer",
            "text": "ChatGPT launched on November 30, 2022 as a research preview. GPT-4 followed in March 2023, GPT-4o in May 2024."
          }
        },
        {
          "@type": "Question",
          "name": "Is ChatGPT free to use?",
          "acceptedAnswer": {
            "@type": "Answer",
            "text": "Yes — ChatGPT is free with GPT-4o mini access. ChatGPT Plus ($20/mo) unlocks GPT-4o, GPT-4.1, image generation, and Deep Research."
          }
        }
      ]
    }
  ]
}