TL;DR — Key Numbers
- OpenAI has approximately 7,000+ employees as of early 2026, per our research.
- The company plans to reach ~8,000 by end of 2026, targeting near-doubling from its 2025 baseline.
- OpenAI has 649 open roles live today — the highest open role count among all AI labs we track.
- OpenAI is the largest independent AI lab by headcount — roughly 2x Anthropic and 1.25x Google DeepMind’s core team.
OpenAI has undergone one of the most dramatic headcount expansions in tech history. In November 2023, the company had roughly 770 employees. By early 2026 — just over two years later — our research puts that number at 7,000+. That’s nearly a 10x increase in headcount at the same time the company’s revenue grew from ~$1.6B ARR to an estimated $11.6B+.
As a private company (though one in the process of converting to a for-profit structure), OpenAI does not publish official headcount. The figures in this article are based on our research using workforce intelligence data, job posting volume, and employee-reported data.
OpenAI Employee Count at a Glance
| Metric | Detail |
|---|---|
| Estimated employees (2026) | 7,000+ |
| Target by end of 2026 | ~8,000 |
| Headquarters | San Francisco, CA (Mission District) |
| Other major offices | New York, Seattle, London, Dublin, Tokyo |
| Open roles (live) | 654 |
| Valuation | $300B (2025 funding round) |
| Est. ARR (2025) | $11.6B+ |
| Glassdoor rating | 3.9 / 5.0 |
OpenAI Headcount Growth Timeline
OpenAI’s headcount growth mirrors — and in some ways outpaces — its revenue trajectory. The hiring acceleration began after GPT-4 launched in early 2023 and accelerated through the ChatGPT growth cycle:
| Year | Est. Employees | Key Event |
|---|---|---|
| 2022 | ~375 | GPT-3 era; Series C closed |
| Late 2023 | ~770 | Sam Altman ousting/return; ChatGPT momentum |
| Mid-2024 | ~3,500 | GPT-4o launch; $6.6B funding round at $157B |
| Late 2024 | ~4,000–4,500 | o1 reasoning models; Sora video launch |
| Early 2025 | ~5,000–5,500 | $300B valuation; operator product expansion |
| Early 2026 | ~7,000+ | 649 open roles; GPT-5 and agentic products |
OpenAI Employees by Department
Based on our research and public job posting data, OpenAI’s workforce breaks down roughly as follows:
- Research (~25%): Frontier model research, alignment, safety, interpretability, and evaluation. OpenAI’s research organization remains the largest in the AI industry by headcount.
- Engineering (~30%): Infrastructure, platform, product engineering for ChatGPT, API, and enterprise products. The engineering org has grown dramatically to support scale.
- Go-to-Market, Sales & Partnerships (~20%): Enterprise sales, channel partners, developer relations. A significant portion of recent growth has been in this function as OpenAI scales its B2B business.
- Safety & Policy (~8%): Trust and safety, policy, legal, and responsible deployment. OpenAI has faced scrutiny over safety processes; this team has grown in response.
- Operations, Finance, HR & Legal (~17%): Support functions for a company undergoing a complex corporate restructuring.
How OpenAI’s Headcount Compares to Other AI Labs
| Company | Est. Employees (2026) | Valuation | Open Roles |
|---|---|---|---|
| OpenAI | ~7,000+ | $300B | 654 |
| Google DeepMind | ~5,600 | Public (Alphabet) | 83 |
| Anthropic | ~3,000–5,000 | $61.5B | 453 |
| Mistral AI | ~700 | $6B | — |
| Cursor (Anysphere) | ~50–300 | $60B+ | 71 |
Global Office Footprint
OpenAI has the most distributed office footprint of any pure-play AI lab. Key locations include:
- San Francisco, CA — Global HQ and primary research hub
- New York, NY — Enterprise sales, media, and partnerships
- Seattle, WA — Engineering and Microsoft partnership teams
- London, UK — European research, policy, and enterprise
- Dublin, Ireland — European operations and Trust & Safety
- Tokyo, Japan — Asia-Pacific partnerships and product localization
Bottom Line on OpenAI’s Employee Count
OpenAI is the largest independent AI lab by headcount at 7,000+ employees, with plans to reach ~8,000 by end of 2026. The growth rate — from 770 in late 2023 to 7,000+ in early 2026 — is extraordinary even by AI industry standards. With 649 open roles, hiring is far from slowing down. If you’re considering a role at OpenAI, you’re joining a large and still-growing organization at the center of the AI moment — with all the opportunities and organizational complexity that entails.
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649 open roles across research, engineering, safety, and enterprise. The largest open role count of any AI lab.
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