OpenAI is the American AI company that created ChatGPT, the world's most used AI chatbot with 800 million weekly users. OpenAI develops GPT models (GPT-4, GPT-5) and o-series reasoning models.
What is OpenAI?
OpenAI is the American artificial intelligence company founded in 2015, known for creating ChatGPT, the world's most used AI chatbot. Led by Sam Altman, OpenAI is the global leader in conversational AI and a decisive player in the AI search revolution.
OpenAI launched the generative AI wave in November 2022 with ChatGPT, fundamentally transforming how users search for and consume information.
OpenAI Models
- GPT-5 — OpenAI's most advanced flagship model
- GPT-4.1 — Model optimized for speed and cost
- GPT-5-mini — Compact and economical version
- o3 — Advanced reasoning model (o-series)
- DALL-E — Image generation
- Whisper — Speech recognition
OpenAI by the Numbers
- 800 million weekly ChatGPT users
- 68% AI search market share (down 19 points in 2025)
- AI citation conversion rate: 14.2% (5× traditional SEO)
- Over 2 million developers using the OpenAI API
OpenAI and AI Visibility
OpenAI and ChatGPT are the primary gateway to AI search for most users. Being mentioned in ChatGPT responses can have a considerable impact on your traffic and conversions. That's why an AEO audit or GEO audit must always include OpenAI models as a priority.
AI Labs Audit integrates all major OpenAI models in its a wide selection of models from many providers. Check our tutorial to understand how to optimize your visibility on ChatGPT.