SA
Sam Altman
Co-Founder & CEO
Co-founder and CEO of OpenAI; former president of Y Combinator (2014-2019).
OpenAI is an artificial intelligence research and deployment company best known for ChatGPT and the GPT family of large language models. It offers consumer products (ChatGPT Free, Plus, Pro, Team, Enterprise), developer APIs, agentic coding tools (Codex), image generation, voice, and the Sora video model, as well as specialized models for scientific research.
OpenAI is an artificial intelligence research and deployment company best known for ChatGPT and the GPT family of large language models. It offers consumer products (ChatGPT Free, Plus, Pro, Team, Enterprise), developer APIs, agentic coding tools (Codex), image generation, voice, and the Sora video model, as well as specialized models for scientific research.
OpenAI was founded in December 2015 as a non-profit AI research lab by Sam Altman, Elon Musk, Greg Brockman, Ilya Sutskever, Wojciech Zaremba, John Schulman and others, with the mission of ensuring artificial general intelligence benefits all of humanity. It restructured to a capped-profit model in 2019 to attract the capital required to train frontier models.
OpenAI released GPT-5.5 Instant as a new default model for ChatGPT, emphasizing faster intent recognition, coding, research and tool use.
OpenAI plans to roughly double its workforce to ~8,000 by end of year, up from about 4,500 in early 2025.
OpenAI released GPT-5.2-Codex, its most advanced agentic coding model for complex software engineering, available across all Codex surfaces for paid ChatGPT users.
OpenAI announced $110B in new investment at a $730B pre-money valuation: $30B from SoftBank, $30B from NVIDIA, and $50B from Amazon.
GPT-5.2 Instant, Thinking and Pro began rolling out in ChatGPT and the API as the most capable model series yet for professional knowledge work.
OpenAI reported more than 1 million enterprise customers as of late 2025, though competitor Anthropic captured majority of new-buyer spend.
OpenAI announced GPT-5, calling it its best AI system yet with state-of-the-art performance in coding, math, writing, health and visual perception.
OpenAI closed the largest private tech fundraise in history: $40B led by SoftBank ($30B) with a $10B investor syndicate, valuing the company at $300B post-money.
Co-Founder & CEO
Co-founder and CEO of OpenAI; former president of Y Combinator (2014-2019).
Co-Founder & President
Co-founder and President of OpenAI; previously CTO at Stripe.
Co-Founder (former Chief Scientist)
Co-founder and former Chief Scientist of OpenAI; world expert in deep learning. Departed in 2024 to start Safe Superintelligence Inc.
Co-Founder (departed 2018)
Co-founder and early funder of OpenAI; departed the board in 2018.
Co-Founder
Co-founder of OpenAI, leads the Codex / coding research team.
Co-Founder (departed 2024)
Co-founder of OpenAI and leading reinforcement-learning researcher; departed in 2024 for Anthropic.
$157B raised total