Prime Intellect
Prime Intellect provides AI training infrastructure and research capabilities for companies to develop their own models. The San Francisco-based startup raised $151M in a Series A round in July 2026 and employs 65 people.
The growth story
Prime Intellect grew from 1 to 65 employees between 2023 and 2026, raising $151M along the way, most recently a Series A in July 2026.
About
Prime Intellect sells a platform that lets companies train AI models using its infrastructure and research capabilities. Its offering combines technical infrastructure with open research resources.
The company raised $151M in its Series A round in 2026, indicating strong investor interest in its approach to AI training. With 65 employees, it has built a substantial team focused on delivering its platform and research capabilities.
Founders and leadership
Research is Prime Intellect's largest function, with 15 people dedicated to this area. The company's leadership includes investors with deep AI expertise, such as Andrej Karpathy and Balaji Srinivasan.
The Prime Intellect org chart
Vincent Weisser (CEO & Co-Founder) leads 9 mapped leaders with 2 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Engineering 30 (+131% YoY), Research 11 (+450% YoY), Entrepreneurship 5 (+150% YoY), Business Development 3 (+50% YoY).
Talent flow
Prime Intellect recruits heavily from Amazon and SPAR Research, with multiple hires from each. Its team includes graduates from Princeton University and MIT, with three alumni from each institution.
Most common previous employers of Prime Intellect staff: Amazon (4), SPAR Research (3), Morgan Stanley (3), Amazon Web Services (AWS) (2), Hugging Face (2), Aleph Alpha (2). Former Prime Intellect employees most often moved to Proximal (1), Google (1), BIOS Discovery (1), Axiom Robotics (1), Argentum AI (1), Augur (1).
Web traffic
Traffic mix: 41% direct, 31% search, 20% social, 2% paid.
What this company is made of
Most common skills at Prime Intellect: Python (Programming Language) (32), Machine Learning (24), Artificial Intelligence (AI) (23), PyTorch (18), Deep Learning (16), Data Science (15), SQL (11), Research Skills (11).
Where the team actually sits
Prime Intellect people are concentrated in California, United States (18), San Francisco Bay Area (11), United States (3), India (2).
Search footprint
Prime Intellect attracts about 673 organic search visits a month, traffic worth roughly $4K a month if bought through ads. It gained 79 ranking keywords and lost 39 in the last period.
Frequently asked
Prime Intellect has 65 employees as of September 2026.
Prime Intellect has raised $151M in total, most recently a Series A round in July 2026.
Prime Intellect was founded in 2024 by Vincent Weisser, Johannes Hagemann.
Vincent Weisser (CEO & Co-Founder) sits at the top of Prime Intellect's reporting structure, with 2 direct reports.
The most common previous employers of current Prime Intellect staff are Amazon (4 people), SPAR Research (3 people), Morgan Stanley (3 people).
Former Prime Intellect employees most often move to Proximal (1), Google (1), BIOS Discovery (1).
Prime Intellect attracts about 673 organic search visits a month, worth roughly $4K a month in equivalent ad spend.
The most common skills among Prime Intellect staff are Python (Programming Language), Machine Learning, Artificial Intelligence (AI), PyTorch, Deep Learning.
Prime Intellect staff are concentrated in California, United States (18), San Francisco Bay Area (11), United States (3).
Prime Intellect has about 30 people in Engineering, up 131% over the past year, as of September 2026.
Prime Intellect has about 11 people in Research, up 450% over the past year, as of September 2026.
Computed from 55 current and 13 former Prime Intellect profiles, as of September 2026. Source: Crustdata.
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