Number of Anthropic Employees (October 2026)

Anthropic had more than 3,500 employees as of September 2026, according to an Anthropic spokesperson quoted by The Wall Street Journal.

That's up from about 2,300 employees at the end of 2025, and a few hundred at most in late 2023.

Anthropic, the maker of Claude, is still hiring fast, with 646 open roles listed on its careers site in October 2026. And it's preparing for an IPO that will put an official headcount on the record for the first time.

In this article, we'll break down how many people work at Anthropic, how fast its headcount has grown, where its employees work, and what the numbers mean for investors.

Top Anthropic Employee Statistics

• Anthropic has more than 3,500 employees, up from about 2,300 at the end of 2025 (Anthropic spokesperson, via The Wall Street Journal, September 2026)
• Anthropic's headcount grew by about 52% in the 9 months to September 2026, compared with the end of 2025 (The Wall Street Journal, Fortune)
• Anthropic made roughly $2 million in revenue per employee in 2025, based on nearly $4.6 billion in revenue and about 2,300 employees (Reuters, Fortune)
• Anthropic listed 646 open roles on October 12, 2026, and sales was the largest group with 124 roles (Anthropic careers site)
• Anthropic has more than 1,300 employees in the San Francisco Bay Area, as of January 2026 (San Francisco Chronicle)
• Anthropic's careers pages drew 626,643 unique visitors in June 2026, 56% more than OpenAI's careers pages (Semrush)
• All 7 of Anthropic's co-founders still work at the company, as of October 2026 (Anthropic)

How Many Employees Does Anthropic Have?

Anthropic has more than 3,500 employees, according to an Anthropic spokesperson in September 2026.

An Anthropic spokesperson gave the figure to The Wall Street Journal in late September 2026. It's the most recent headcount that comes from Anthropic itself.

Anthropic hasn't published an official employee count yet. Anthropic confidentially submitted a draft S-1 to the SEC on June 1, 2026. Once that filing is public, it should include an official headcount.

Third-party data providers estimate a higher headcount than Anthropic's own figure. But they don't publish their methods, and they may count contractors or people who have left.

For investors, the company-sourced figure of 3,500+ is the one to use until the S-1 is public.

Does Anthropic Publish Workforce Diversity Data?

Anthropic hasn't published a workforce diversity report, as of October 2026, so there is no public gender or ethnicity breakdown of its employees.

Anthropic isn't alone in this. Several big tech companies have stopped publishing this data. Google, for example, ended its annual diversity reports in 2025, according to HR Brew.

For comparison, see our breakdown of how many people work at Google.

How Has the Number of Anthropic Employees Grown Over Time?

The number of Anthropic employees has grown from 7 co-founders in 2021 to more than 3,500 in September 2026.

Anthropic's headcount grew by about 52% in the 9 months to September 2026, from about 2,300 at the end of 2025.

Anthropic's headcount is also roughly 4x what it was in May 2025, when it had just over 800 employees.

Here's a breakdown of the number of Anthropic employees over time, from 2021 to September 2026:

Date	Anthropic Employees
2021 (founding)	7 co-founders
Late 2023	Fewer than 200 to ~500
May 2025	800+
End of 2025	~2,300
January 2026	2,500+
September 2026	3,500+

Reports differ on Anthropic's size in late 2023. Fortune reported that Anthropic had fewer than 200 employees in late 2023. The Information put the figure at roughly 300 in December 2023, while a separate Fortune report said around 500.

Anthropic's founders all left OpenAI to start the company in 2021. All 7 co-founders are still at Anthropic, according to the company’s website. They include CEO Dario Amodei and President Daniela Amodei.

Anthropic has an unusual structure at the top. Dario Amodei has one direct report, his chief of staff, and the rest of the senior leadership reports to Daniela Amodei, according to Fortune.

For investors, the hiring pace matters. Anthropic added roughly 1,200 people in the first 9 months of 2026, more than its entire workforce in May 2025. Bringing in that many people so quickly may be seen by some as an execution risk.

What Is Anthropic's Revenue Per Employee?

Anthropic made roughly $2 million in revenue per employee in 2025, based on nearly $4.6 billion in revenue and about 2,300 employees at the end of the year.

Anthropic made nearly $4.6 billion in revenue in 2025, according to its IPO prospectus as seen by Reuters. Fortune reported a headcount of about 2,300 at the end of 2025.

This is a rough figure. It uses the year-end headcount, and Anthropic had far fewer employees earlier in 2025. Based on average headcount through the year, Anthropic's revenue per employee would be higher.

Anthropic's revenue has grown much faster than its workforce since then. For the latest figures, see our Anthropic revenue statistics.

For investors, revenue per employee is a useful check on efficiency at a company that is still years from steady profits. It's worth recalculating with the official figures from the S-1.

How Many People Is Anthropic Hiring?

Anthropic listed 646 open roles on its careers site on October 12, 2026. That's equal to about 18% of its current headcount.

Sales is Anthropic's biggest hiring area, with 124 open roles, or about 19% of the total.

Here's a breakdown of Anthropic's open roles by department, as of October 12, 2026:

Department	Open Roles
Sales	124
AI Research & Engineering	67
Finance	55
Applied AI	54
Security	51
Engineering & Design (Product)	47
Software Engineering (Infrastructure)	46
Safeguards	41
Compute	26
Legal	20

Most open roles are in the US. San Francisco is listed on 470 roles, New York on 348 and Seattle on 181. Many roles list more than one city.

Anthropic is also building bigger teams outside the US. Anthropic has more than 200 people in London and new office space for 800, according to CNBC. And Anthropic plans to hire about 200 people in Dublin, according to IDA Ireland.

The pace of hiring at the top has picked up too. Andrej Karpathy, an OpenAI co-founder, joined Anthropic's pre-training team in May 2026, according to TechCrunch. In June 2026, Nobel laureate John Jumper said he was leaving Google DeepMind for Anthropic, CNBC reported.

For investors, the mix of open roles shows where Anthropic is putting its money. Sales has the most open roles, which points to a focus on selling to more customers.

Where Do Anthropic Employees Work?

Most Anthropic employees work in the US. Anthropic had more than 1,300 employees in the San Francisco Bay Area in January 2026, according to Daniela Amodei, who gave the Bay Area figure to the San Francisco Chronicle.

Anthropic's headcount in Europe, the Middle East and Africa (EMEA) tripled in the year to November 2025, according to Anthropic.

Here's a breakdown of Anthropic's international offices, and when each one opened:

Office	Region	Opened
London	Europe	2023
Dublin	Europe	By April 2025
Zurich	Europe	Before November 2025
Tokyo	Asia-Pacific	October 2025
Paris	Europe	Announced November 2025
Munich	Europe	Announced November 2025
Bengaluru	Asia-Pacific	February 2026
Sydney	Asia-Pacific	April 2026
Milan	Europe	May 2026
Seoul	Asia-Pacific	June 2026

Anthropic opened or announced seven offices outside the US between October 2025 and June 2026. For investors, new offices outside the US widen the markets where Anthropic can sell directly.

How Does Anthropic's Headcount Compare With OpenAI?

Anthropic has fewer employees than OpenAI. Anthropic had more than 3,500 employees in September 2026, while OpenAI had about 4,500 in March 2026.

OpenAI planned to grow to around 8,000 employees by the end of 2026, the Financial Times reported.

Other AI labs are harder to compare. Google DeepMind and Mistral AI don't publish official headcounts. And xAI is now part of SpaceX, which reported more than 22,000 full-time employees as of March 31, 2026, in its IPO filing. That figure covers the whole company, not only its AI work.

Anthropic has also been good at keeping its people. 80% of employees Anthropic hired at least 2 years earlier were still at the company at the end of their second year, according to SignalFire. That compared with 67% at OpenAI. SignalFire's figures are from its May 2025 report, based on LinkedIn profile data.

SignalFire also found that engineers were 8 times more likely to leave OpenAI for Anthropic than the reverse. From Google DeepMind, the ratio was nearly 11 to 1 in Anthropic's favor.

For investors, a smaller team with strong retention is part of Anthropic's case. To compare the two companies on revenue, see our OpenAI revenue statistics.

Can Anthropic Employees Sell Their Shares?

Yes. Anthropic has let employees sell some of their shares before its IPO, through company-run share sales called tender offers.

Anthropic launched an employee share sale of up to $6 billion in February 2026, according to Bloomberg. Current and former staff with at least 12 months at the company could take part.

Many employees chose to keep their shares. Bloomberg reported in April 2026 that the tender closed with employees selling less stock than investors wanted to buy.

All of Anthropic's co-founders have pledged to give away 80% of their wealth, Dario Amodei wrote in a January 2026 essay.

For investors, staff holding on to shares is a sign of confidence ahead of the IPO. It also means more employee stock could reach the market once any lock-up period ends.

How Many People Want to Work at Anthropic?

Anthropic's careers pages drew 626,643 unique visitors in June 2026, according to Semrush. That's 56% more than OpenAI's careers pages, which drew 400,429.

The US made up 44.26% of visits, compared with 53.72% for OpenAI's careers pages.

The UK was the second-biggest source of visits to Anthropic's careers pages, at 14.12%. India was third, at 9.20%.

Here's a breakdown of visits to Anthropic's careers pages by country in June 2026:

Country	Proportion of Traffic
United States	44.26%
United Kingdom	14.12%
India	9.20%
Germany	4.99%
Singapore	3.16%

Figures above are for June 2026.

For the latest monthly figures, see Exploding Topics' anthropic.com website traffic analytics.

For investors, strong interest from jobseekers helps Anthropic hire quickly in a tight market for AI talent. You can check the same signal for any company with Semrush Traffic Analytics.

What Does Search Data Say About Anthropic and AI Jobs?

Exploding Topics data shows that searches for "Anthropic" grew 1,533% between October 2024 and September 2026. Searches for "OpenAI" grew 200% over the same period.

Searches for AI skills grew too. Exploding Topics data shows that searches for "AI engineering" grew 740% between October 2024 and September 2026, while searches for "prompt engineering" grew 300%.

Here's a breakdown of searches for Anthropic, OpenAI and AI talent terms, October 2024 to September 2026:

Search Term	October 2024	Peak	September 2026	2-Year Change
Anthropic	167,755	5,591,836 (June 2026)	2,740,000	+1,533%
OpenAI	1,666,666	16,666,666 (June 2026)	5,000,000	+200%
AI engineering	13,095	261,904 (June 2026)	110,000	+740%
Prompt engineering	33,750	259,615 (June 2026)	135,000	+300%

For investors, rising searches for AI engineering skills point to more competition for the same talent. That could push up hiring costs for every AI lab, including Anthropic.

What's Next for Anthropic's Workforce?

Anthropic's IPO filing will be the next big source of workforce data. Anthropic could list as soon as November 2026, according to Bloomberg.

Anthropic's public S-1 should give an official headcount, which may differ from the figures in this article. Expect Anthropic's headcount to keep rising, with 646 roles open and new offices filling up in London, Dublin and Asia-Pacific.

How We Compiled These Statistics

We used Anthropic's own announcements and careers site, statements from Anthropic spokespeople reported by major publications, SEC filings, and named research reports. Where sources disagree, we say so and give each figure with its date. We don't use third-party headcount estimates, because their providers don't publish their methods. Search data comes from Exploding Topics, and website traffic data comes from Semrush. Figures are as of October 12, 2026.

For more company and AI statistics, take a look at:

• Anthropic Revenue and Valuation Statistics
• OpenAI Revenue and Valuation Statistics
• Number of Google Employees
• Number of Nvidia Employees
• The Hidden AI Workforce: 29% of Employees Pay for Their Own AI Tools

Want to see how fast a company like Anthropic is growing before its next announcement? Semrush Traffic & Market toolkit shows any company's website traffic, audience and top pages, so you can track hiring interest and market share yourself. Try Semrush free. And to spot the next fast-growing AI companies early, try Exploding Topics Pro.