Capitol AI
YC S24Washington, US · Founded 2021 · 11 employees · Hiring · 6 known investors
Capitol builds sovereign AI infrastructure for regulated institutions including financial services firms, professional services organizations, and government agencies. The platform transforms proprietary data into decision-grade artifacts while maintaining complete audit trails and running entirely within customer infrastructure.
AI & Machine LearningData & InfrastructureEnterprise SoftwareFuture of WorkGovTechAI-Enhanced LearningWorkflow AutomationAnalyticsMediaAIUnited States of AmericaAmerica / CanadaPartly Remote
Founders & leadership· Y Combinator alumni (S24)
Capitol AI was founded in 2021 by Shaun Modi and thomas hallaran.
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Shaun Modiin𝕏Co-founder · CEOShaun Modi was a founding designer at Airbnb and has held design roles at Google, NASA, the CDC, and other government and technology organizations. He is now founder and CEO of Capitol AI, which provides AI-powered content generation from documents.
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thomas hallaranin𝕏Co-Founder & CTOThomas Hallaran is a software engineer and technical manager with 20 years of experience across academia, venture-backed startups, and the U.S. Federal Government, holding positions ranging from individual contributor to director level.
Investors · 6
The YC application· Summer 2024 batch
Alumni Q&A
- How did you decide to apply to Y Combinator? What was your experience applying, going through the batch, and fundraising at demo day?
- The founders applied at the encouragement of Brian Chesky, who had previously hired one of them (Shaun) at Airbnb. During the batch they worked with partners Garry, Ooshma, and Aaron, improved product velocity and customer acquisition, and signed a $1.3M term sheet with a major media brand.
- What's the history of your company from getting started until the present day? What were the big inflection points?
- The company grew out of Tom and a co-founder's work on Covid-19 logistics applications using AI models for HHS and the US DoD, where they found the interfaces from integrators like IBM, SAP, and Deloitte unusable. They started with a contract from the second-largest US health insurer to automate data storytelling for its self-insured employer line, using classical and Bayesian statistics with DBT, then pivoted away from healthcare to center the product on LLMs after GPT-3.5 launched. They recently closed a $1.3M enterprise contract.
Summarized from the founders' answers on their Y Combinator profile.
Competitors · 2
by search overlapCopilot AI5 shared keywordsCoPilot AI provides AI-powered sales agents that automate LinkedIn outbound prospecting, identifying high-fit prospects, sending personalized outreach at scale, and managing follow-up conversations to book meetings. It targets B2B sales teams looking to build a predictable outbound pipeline without relying on manual rep effort.
Hebbia3 shared keywordsHebbia builds an AI platform that runs research and analysis across large sets of documents, generating structured outputs such as market research tables and reports. It serves knowledge-work teams, with an apparent focus on finance and professional-services workflows.
Companies competing with Capitol AI for the same Google search keywords, organic and paid, via search-intersection analysis.
In the news
Frequently asked questions
- What does Capitol AI do?
- Capitol builds sovereign AI infrastructure for regulated institutions including financial services firms, professional services organizations, and government agencies. The platform transforms proprietary data into decision-grade artifacts while maintaining complete audit trails and running entirely within customer infrastructure.
- Who founded Capitol AI?
- Capitol AI was founded by Shaun Modi, thomas hallaran in 2021.
- Who are Capitol AI's investors?
- Capitol AI's investors include Y Combinator, Designer Fund, Failup Ventures, Imagination Capital, Together Fund, 468 Capital.
- Where is Capitol AI headquartered?
- Capitol AI is headquartered in Washington, US.


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