OpenAI logoCompany profile

OpenAI

OpenAI is the AI research and deployment company behind ChatGPT, GPT-5, Sora and the o-series reasoning models. Headquartered in San Francisco, the firm has raised roughly $64B across all rounds, most recently a $40B SoftBank-led primary in March 2025 that valued it at $300B, with a 2025 employee tender pushing the valuation to about $500B.

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Company snapshot

  • Active
Total funding
$64B
Funding rounds
11
Last round (Series F)
$40B
Last round date
Mar 2025
Founded
2015
Employees
5001-10000
Headquarters
San Francisco, California, United States
Last round vs total raised$40B of $64B

Founders

Sam Altman, Elon Musk, Greg Brockman, Ilya Sutskever, Wojciech Zaremba, John Schulman

Industries

  • Artificial Intelligence
  • Generative AI
  • Machine Learning
  • Software

Notable investors

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InvestorRole
SoftBankLead
MicrosoftLead
Thrive CapitalLead
CoatueCo-investor
Altimeter CapitalCo-investor
Khosla VenturesCo-investor
Sequoia CapitalCo-investor

Frequently asked questions

OpenAI has raised $64B in total funding across 11 rounds.

OpenAI's most recent round was a Series F of $40B in Mar 2025.

OpenAI was founded in 2015.

OpenAI is headquartered in San Francisco, California, United States.

OpenAI has 5001-10000 employees.

OpenAI's notable investors include SoftBank, Microsoft, Thrive Capital, Coatue, Altimeter Capital, Khosla Ventures.

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