# Stack AI

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/stack-ai

- Industry: Software
- Headquarters: Cambridge, US
- Website: www.stack-ai.com
- Total disclosed funding: $19M
- Latest round: Series A (May 6, 2025)
- Investors on record: 9

## About

Founded in 2022 and based in Massachusetts, US, Eigen Inc., doing business as Stack AI, operates as a software development company that allows companies to build AI assistants for their business operations. The company was founded by Antoni Rosinol and Bernardo Aceituno. In May 2025, Stack AI raised USD 16 million in series A funding led by new investor Lobby Capital, with participation from another new investor LifeX Ventures. Returning investors Y Combinator, Epakon Capital, and individual investors also participated in the round. Stack AI provides enterprise-grade AI solutions for small and medium-sized enterprises. The firm’s software allows users to create a wide range of AI assistants and chatbots, like RFP AI assistants and data warehouse AI assistants. The firm provides pre-built templates to develop AI assistants and integrates with various data storage solutions like AWS S3, Sharepoint, OneDrive, Snowflake, and Azure. The company generates revenue by offering its services on a subscription-based pricing plan. The plans include free, starter (USD 139/month-199/month), team (USD 699/month-899/month), and enterprise/academia. The company plans to use the funds raised in May 2024 to expand its workforce.

## Funding rounds

- Series A, May 6, 2025, $16M — Y Combinator, LifeX Ventures, Lobby Capital, Epakon Capital
- Seed, May 21, 2024, $3M — Y Combinator, Soma Capital Management, Gradient Ventures, Lambda, Inc., Beat Ventures, Epakon Capital, Cresset Asset Management

## Investors

- Y Combinator (https://capitalatlas.ai/funds/y-combinator) — Seed, Series A
- Soma Capital Management (https://capitalatlas.ai/funds/soma-capital-management) — Seed
- Gradient Ventures (https://capitalatlas.ai/funds/gradient-ventures) — Seed
- Lambda, Inc. — Seed
- Beat Ventures (https://capitalatlas.ai/funds/beat-ventures) — Seed
- Epakon Capital (https://capitalatlas.ai/funds/epakon-capital) — Seed, Series A
- Cresset Asset Management (https://capitalatlas.ai/funds/cresset-asset-management) — Seed
- LifeX Ventures (https://capitalatlas.ai/funds/lifex-ventures) — Series A
- Lobby Capital (https://capitalatlas.ai/funds/lobby-capital) — Series A