LangChain
LangChain provides open-source tools and a platform for building AI agents, with 405 employees and $160M in funding after a 2025 Series B round led by top-tier investors including Benchmark and CapitalG.
The growth story
LangChain grew from 2 to 405 employees between 2022 and 2026, raising $160M along the way, most recently a Series B in October 2025.
About
LangChain sells developer tools and a cloud platform for creating, testing, and deploying AI agents. Its open-source frameworks help teams move from prototypes to production, while LangSmith adds monitoring and deployment features.
The company reached 405 employees just three years after its 2022 founding, with backing from Amplify Partners, Databricks Ventures, and others. Its $160M Series B in late 2025 suggests rapid scaling despite unclear headcount growth rates.
Founders and leadership
Engineering dominates with 69 staff, representing 17% of the workforce. The company has a young median tenure of just one year, typical for a fast-growing startup.
The LangChain org chart
Harrison Chase (Co-Founder and CEO) leads 60 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 157 (+208% YoY), Sales 50 (+285% YoY), Information Technology 24 (+167% YoY), Business Development 16 (+220% YoY), Marketing 16 (+167% YoY), Media and Communication 15 (+67% YoY).
Talent flow
Nearly 20% of analyzed hires came from HashiCorp, with Salesforce, Google, and Microsoft also major sources. Alumni frequently join AI labs like OpenAI and Anthropic, or found new startups.
Most common previous employers of LangChain staff: HashiCorp (19), Salesforce (17), Google (12), Microsoft (12), MuleSoft (11), Elastic (9). Former LangChain employees most often moved to Microsoft (2), Cognition (2), OpenAI (2), Anthropic (2), Fastino Labs (1), TerraLab (1).
Alumni worth knowing
The LangChain mafia
10 alumni-founded companies exist, including NOX (15 staff) and The Relationship Company (9 staff), showing LangChain's role as an AI talent incubator.
10Molly Cantillon, was AI Engineer until 2023Henry Weng, was Product Engineer until 2024Yvann Barbot, was Developer of Robby ChatBot AI until 2023Nuno Campos, was Founding Engineer until 2025Aliyan Ishfaq, was Applied AI until 2025
Vadym Barda, was Software / AI Engineer until 2025
Iradukunda Allelua Fiacre, was Open Source Developer until 2026
Ben Burns, was Software Engineer until 2025
Nikolai Zavas, was Head of Commercial Legal until 2025Hiring now
Web traffic
Traffic mix: 39% direct, 38% search, 6% social, 0% paid.
What this company is made of
Most common skills at LangChain: Python (Programming Language) (164), Leadership (136), Java (110), JavaScript (110), SQL (105), Microsoft Excel (94), Microsoft Office (90), Public Speaking (82).
Where the team actually sits
LangChain people are concentrated in California, United States (60), San Francisco Bay Area (31), New York, United States (27), England, United Kingdom (12). 4 offices on record.
Search footprint
LangChain attracts about 9,266 organic search visits a month, traffic worth roughly $35K a month if bought through ads. It gained 4,585 ranking keywords and lost 2,685 in the last period.
Frequently asked
LangChain has 405 employees as of September 2026.
LangChain has raised $160M in total, most recently a Series B round in October 2025.
LangChain was founded in 2022 by Harrison Chase, Ankush Gola.
Harrison Chase (Co-Founder and CEO) sits at the top of LangChain's reporting structure, with 2 direct reports.
The most common previous employers of current LangChain staff are HashiCorp (19 people), Salesforce (17 people), Google (12 people).
Former LangChain employees most often move to Microsoft (2), Cognition (2), OpenAI (2).
At least 10 companies have a founder who previously worked at LangChain, including NOX, The Relationship Company, TerraLab.
LangChain attracts about 9,266 organic search visits a month, worth roughly $35K a month in equivalent ad spend.
The most common skills among LangChain staff are Python (Programming Language), Leadership, Java, JavaScript, SQL.
LangChain staff are concentrated in California, United States (60), San Francisco Bay Area (31), New York, United States (27).
LangChain has about 157 people in Engineering, up 208% over the past year, as of September 2026.
LangChain has about 50 people in Sales, up 285% over the past year, as of September 2026.
Computed from 245 current and 72 former LangChain profiles, as of September 2026. Source: Crustdata.
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