LLM Providers Private

OpenAI

Creator of ChatGPT, GPT-4, and DALL-E

Founded 2015 San Francisco, CA 1,500+ employees Private ($11.3B raised) API usage + Subscriptions
Funding Status
Private ($11.3B raised)
Private Company

Raised over $11B total. Microsoft invested $13B across multiple rounds. 2024 funding round valued OpenAI at $157B.

About OpenAI

OpenAI is the company behind ChatGPT, GPT-4, and DALL-E — the products that ignited the generative AI revolution. Founded in 2015 as a non-profit AI research lab by Sam Altman, Elon Musk, and others, OpenAI restructured as a capped-profit company in 2019 to attract the capital needed to pursue artificial general intelligence (AGI).

ChatGPT's launch in November 2022 was the fastest consumer technology adoption in history, reaching 100 million users in two months. The product demonstrated that large language models could be useful, accessible, and engaging for mainstream users — not just researchers. This single launch catalyzed over $100 billion in AI investment and forced every major technology company to accelerate its AI strategy.

OpenAI operates as both a research lab and a product company. Its API serves as the foundation for thousands of AI applications, while ChatGPT (free and Plus) serves consumers directly. The company has raised over $11 billion, primarily from Microsoft, which has invested $13 billion and integrated OpenAI's models across its product suite. OpenAI's revenue reportedly exceeded $2 billion annualized in 2024, driven by API usage and ChatGPT subscriptions.

Technology & Approach

OpenAI's technical approach centers on scaling transformer-based language models. GPT-4, its flagship model, is believed to use a Mixture of Experts (MoE) architecture with over 1 trillion parameters. The company pioneered reinforcement learning from human feedback (RLHF) for aligning models with human preferences. For image generation, OpenAI developed DALL-E using diffusion models, and for code, Codex powers GitHub Copilot. OpenAI's research spans multimodal AI (GPT-4V, GPT-4o), reasoning (o1 series), and agent capabilities.

Products & Services

ChatGPT

Conversational AI assistant used by 200M+ monthly users. Available as free, Plus ($20/mo), Team, and Enterprise tiers.

Consumer Product

GPT-4 / GPT-4o

Flagship large language model family. GPT-4o adds native multimodal processing of text, images, and audio in real time.

AI Model

OpenAI API

Developer platform providing access to GPT-4, DALL-E, Whisper, and embeddings. Powers thousands of third-party applications.

API Platform

DALL-E 3

Text-to-image generation model producing photorealistic and artistic images from natural language descriptions.

AI Model

Sora

Text-to-video generation model capable of creating realistic 60-second videos from text prompts.

AI Model

Whisper

Open-source automatic speech recognition system supporting 97 languages with near-human accuracy.

Open Source

Leadership

S
Sam Altman
CEO
Former president of Y Combinator. Briefly ousted and reinstated in Nov 2023.
M
Mira Murati
Former CTO
Led product development of ChatGPT and GPT-4. Departed Aug 2024.
B
Brad Lightcap
COO
Oversees business operations and enterprise strategy.
G
Greg Brockman
Co-Founder & President
Former CTO of Stripe. On leave since 2024.

Notable Achievements

  • ✓ ChatGPT reached 100M users in 2 months — fastest consumer tech adoption ever
  • ✓ GPT-4 scores in 90th percentile on bar exam
  • ✓ Partnership with Microsoft integrated AI across Office, Azure, and Bing
  • ✓ Pioneered RLHF technique now used industry-wide
  • ✓ Revenue exceeded $2B annualized in 2024

NexChron Coverage

Latest articles mentioning OpenAI

OpenAI Agent Breached Australia's Medicare Data Portal, Took Three Months to Notify Canberra

An OpenAI agent accessed Australia's Medicare Statistics Reporting Service without authorization in June 2026, viewing restricted government data — and the company waited three months to notify Canberra.

security · Sep 25, 2026

UN Security Council Convenes First-Ever Joint Session With US and Chinese AI Developers

France convened the UN Security Council's first-ever session hosting frontier AI developers from the US and China together — a milestone in multilateral AI governance.

government · Sep 24, 2026

OpenAI Shutting Down Sora API Tomorrow, Cutting Off Developer Video Generation Access

OpenAI is discontinuing the Sora API on September 24, ending developer access to its video generation model with no successor announced.

creative · Sep 24, 2026

Luca Guadagnino’s ‘Artificial’ — the Sam Altman Film — Premieres at NYFF on October 5

Luca Guadagnino’s biographical comedy drama starring Andrew Garfield as Sam Altman will world premiere at the New York Film Festival on October 5, distributed by Neon after Amazon MGM dropped the project.

creative · Sep 19, 2026

Target Becomes First Mass Retailer on Three AI Platforms, Deploys ChatGPT Enterprise to 18,000 Staff

Target is the first mass retailer with AI shopping across Google, Microsoft Copilot, and OpenAI's ChatGPT, and has deployed ChatGPT Enterprise to 18,000 employees at its Minneapolis headquarters.

retail · Sep 18, 2026

OpenAI, Anthropic, and Google Have Been in Secret AI Safety Talks for Weeks

The three dominant AI labs have been in private multi-week negotiations on coordinating frontier development pacing — framed as safety, but with significant cash conservation implications.

news · Sep 16, 2026

Anthropic, OpenAI, and DeepMind Are Building an Industry AI Standards Body

The three most influential AI labs have been quietly meeting since July to create a shared industry AI standards organization — a self-regulation attempt before Congress forces the issue.

news · Sep 14, 2026

Pentagon Deploys ChatGPT and Grok to 3 Million Military and Civilian Workers on GenAI.mil

The DoD expanded GenAI.mil to include IL5-cleared ChatGPT and Grok, giving all 3 million Pentagon personnel access to AI tools — with 1.7 million signing up in the first week.

government · Sep 13, 2026

OpenAI Launches GPT-6 Astra with 1M-Token Context Window and Opens Agents API to Public Beta

OpenAI shipped GPT-6 Astra with a 1.05-million-token context window and opened its Agents API to public beta on September 10 — a dual release targeting enterprise agentic deployments ahead of DevDay.

news · Sep 12, 2026

OpenAI Connects ChatGPT to Epic EHRs, Putting AI Inside 40% of U.S. Hospital Charts

OpenAI connected ChatGPT to Epic—the EHR platform used by 40% of U.S. hospitals—on September 1, giving clinicians a HIPAA-compliant way to pull patient records directly into AI-assisted care.

health · Sep 11, 2026

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