OpenAI
ACTIVEAmerican AI organization founded in 2015 in San Francisco, developing the GPT language models, ChatGPT chatbot, DALL-E image models, and Sora video model.
OpenAI
Founded 2015 · San Francisco, United StatesOpenAI was founded on 11 December 2015 in San Francisco as a nonprofit by Sam Altman, Elon Musk, Greg Brockman, Ilya Sutskever, Wojciech Zaremba, John Schulman, and other AI researchers, with the mission of ensuring that artificial general intelligence (AGI) benefits all of humanity. In 2019, a capped-profit LLC subsidiary was established alongside the nonprofit, enabling the first billion-dollar investment from Microsoft. In November 2022, OpenAI launched ChatGPT, which became the fastest-growing consumer application in history (1 million users in 5 days). In October 2025, a recapitalisation was completed: the nonprofit was renamed the OpenAI Foundation (holding a 26% stake in the for-profit entity), and the subsidiary was converted into a public benefit corporation (PBC) called OpenAI Group PBC. Following the recapitalisation, Microsoft holds approximately 27% of OpenAI Group PBC. Key products include: ChatGPT (AI assistant; 500 million weekly users as of March 2025), the GPT-4o/4.5/5 model family, the o1/o3/o4-mini reasoning model series, the DALL-E image generator, the Sora video model, and the Whisper speech recognition model. In March 2025, OpenAI closed a record private funding round of $40 billion led by SoftBank at a valuation of $300 billion. In May 2025, the company acquired the startups Windsurf ($3 billion) and io ($6.5 billion, co-founded by Jony Ive). OpenAI is planning an IPO, expected in 2026–2027.
Founders
American entrepreneur and investor, former president of Y Combinator; co-founder of OpenAI in 2015 and the company's CEO.
South African–born American entrepreneur; CEO of Tesla and SpaceX, founder of xAI and The Boring Company, owner of X Corp.
American software engineer and former CTO of Stripe; co-founder and President of OpenAI.
Israeli–Canadian AI researcher, Geoffrey Hinton's PhD student; co-founder and former Chief Scientist of OpenAI, founded Safe Superintelligence Inc. in 2024.
Polish AI researcher with a PhD from NYU; OpenAI co-founder leading robotics and code research.
Slovak–Canadian AI researcher, Fei-Fei Li's PhD student; co-founder of OpenAI, later Director of AI at Tesla, founder of Eureka Labs.
American AI researcher, creator of the PPO algorithm; OpenAI co-founder who joined Anthropic in 2024.
Canadian engineer and robotics researcher, Y Combinator partner; one of OpenAI's founders in 2015.
Software engineer and one of OpenAI's first employees and co-founders; later founded ML monitoring startup Gantry.
Dutch AI researcher, creator of the Adam optimizer and Variational Autoencoders (VAEs); OpenAI co-founder.
American ML engineer previously at Facebook AI Research; an OpenAI founder, later partner at Pebblebed venture fund.
Domain of activity
Global presence
HQ San Francisco · 4 officesScale & funding
founded 2015 · Strategic round / corporate investmentProducts & solutions
7 ai models · 2 ai systems · 1 ai platforms · 1 model families
ChatGPT Images 2.0
OpenAI's image generation and editing model with built-in O-series reasoning, up to 2K resolution, non-Latin text rendering, and batch generation of up to 8 images per prompt. Available via API as gpt-image-2.
GPT-5.5
GPT-5.5 is OpenAI's newest frontier model, focused on agentic coding, computer use, knowledge work, and scientific research with a 1M-token context window.
GPT-5.4 Thinking
The most advanced GPT-5 model for complex professional work, reasoning, coding, tool use, and long-context tasks.
GPT-4.1
GPT-4.1 is an OpenAI API model released April 14, 2025. Features a 1M token context window, 54.6% on SWE-bench Verified, and precise literal instruction following. Designed for developers building agentic coding workflows.
GPT-5.4 Pro
The highest-quality GPT-5.4 variant, using increased compute to handle highly complex problems; available in ChatGPT and via API.
GPT-5.5 Pro
GPT-5.5 Pro is a variant of GPT-5.5 applying additional parallel test-time compute on harder questions, targeting higher-accuracy work in business, legal, scientific, and data-intensive domains.
GPT-Rosalind
Specialized OpenAI reasoning model designed for life sciences research, drug discovery, genomics, and chemistry. The first model in the Life Sciences series.
Organizational relations
5 strategic relationsStrategic relations
5- Funded byMicrosoft has invested over $13.75 billion in OpenAI in total (since 2019). Following the October 2025 recapitalization, Microsoft holds approximately 27% of OpenAI Group PBC, valued at roughly $135 billion. Microsoft is the exclusive cloud infrastructure provider (Azure) for OpenAI. OpenAI models are integrated into Microsoft products (Copilot, Bing, Azure AI).2019 →
- PartnershipIn March 2025, OpenAI, SoftBank, and Oracle announced the Stargate project — an initiative to build AI data center infrastructure in the US valued at up to $500 billion. OpenAI raised $40 billion in a round led by SoftBank ($30 billion) at a post-money valuation of $300 billion (March/April 2025).2025 →
- Funded byMicrosoft has been an investor since 2019, with total commitments exceeding $13 billion (per Microsoft 10-Q, September 2025: $11.6 billion invested of $13 billion). Microsoft holds approximately 27% of shares (on an as-converted basis, per Microsoft statement, October 2025). The investment was valued at approximately $135 billion (October 2025). The OpenAI API is exclusively available on Azure. OpenAI has committed to purchasing $250 billion in Microsoft Azure services.2019 →
- Funded byAmazon: $50B investment announced February 27, 2026 (part of the $110B→$122B round), with $35B contingent on milestone achievement. Multi-year strategic partnership: OpenAI expands use of AWS infrastructure (including Trainium chips); OpenAI enterprise tools made available to AWS customers.2026 →
- Funded byNVIDIA: $30 bn investment announced 27 Feb 2026, largely in the form of dedicated GPU compute credits. Previously, NVIDIA invested $100 mn in the Series E round (Oct 2024). Memorandum of Understanding from Sep 2025 covering deployment of at least 10 GW of NVIDIA systems.2024 →
Profile & metadata
3 classification · 8 external linksClassification
- Statusactive
- Development stagegrowth
- Listed onNo
