ChatGPT
San Francisco, California, United States · Founded 2022
$17.9B+
Sourced & current · updated Oct 26, 2026Website
ChatGPT is a conversational AI platform developed by OpenAI that hosts the first major form of AI advertising inside a large language model, displaying sponsored placements matched to the topics users are actively exploring.
Where they sit
Stack tier: Ecosystem Services (A)
Native AdvertisingAI-Powered Platform
Dominant conversational AI platform and emerging advertising surface; category creator and market leader in consumer-facing generative AI
Ownership
Parent: OpenAI