Flex Capital
36 Palm Ave, San Francisco, CA, 94118, United States
Overview
Flex Capital is an investment firm that invests in early-stage companies that helps to grow their businesses.
- Total investments
- 46
- Lead investments
- 4
- Investments · 12mo
- 12
- Active investors
- 7
Sector focus
- Finance
- Financial Services
- Venture Capital
Investment portfolio
- CodeRabbit
Participated · Series C · Aug 2026
CodeRabbit offers an automated platform that uses AI agents to review freshly generated code in real time, catching syntax errors, logic bugs and security vulnerabilities as code is created. The company has expanded its offering with Agentic Change Management, which includes CodeRabbit Triage for scoring and routing pull requests, Change Stack for visualizing a change's impact on system behavior and dependencies, and CodeRabbit Security for full-repository scanning and continuous monitoring after code ships. Its tools validate incoming pull requests using repository-wide context and sandboxed test environments, and can generate recommended fixes that re-enter the pull request workflow. CodeRabbit has positioned the product to help teams prioritize and govern a rising volume of code changes originating from developers, nontechnical staff and automated agents. The company announced a $143 million Series C to accelerate these product capabilities and scale adoption. Prior investors such as CRV, Scale Venture Partners, Flex Capital and Pelion Venture Partners participated in the latest round.
- Uniti AI
Participated · Series A · Jul 2026
Uniti builds an agentic AI orchestration layer that runs real estate operators' playbooks across sales, leasing, support, maintenance, collections, payments and reviews. Its AI agents operate across voice, SMS, email, chat and WhatsApp and integrate with 15+ property management and CRM platforms, sitting above existing systems rather than replacing them. The company targets multiple verticals including self-storage, multifamily, senior living, manufactured housing, coworking and commercial office, and is live with customers such as Regus, StorQuest, RHP Properties, Storage King USA and Fora. Uniti reports measurable customer results including a 214% ROI for an enterprise self-storage operator, 94% of pilots converting to long-term contracts, and 306% net revenue retention as customers expand. The startup combines operational real estate expertise with frontier AI and is headquartered in New York City; it was founded by Yale classmates Francesco Decamilli and Emre Altinok and operates across 10+ countries.
- Kin Health
Participated · Seed · May 2026
Kin Health builds a patient-facing AI notetaker that records doctor visits, transcribes conversations using specialized medical models, and returns user-facing summaries with action items and next steps. The app encrypts patient data and is private by default; it is not HIPAA-certified but the company says it adheres to the same privacy standards. Founders are physicians Arpan and Amit Parikh and Kyle Alwyn, with GoodRx co-founders Doug Hirsch and Trevor Bezdek as founding partners and executive chairmen. Kin says it evaluates outputs at multiple processing stages to improve accuracy and is working to handle different accents and challenging audio conditions. The company plans to bring in additional health data sources this year, including physicians’ notes via EHR integrations, and will keep the app free while monetizing through referrals to specialists and labs. The product faces industry concerns around AI accuracy, consent, and data security, and Kin notes clinicians should review AI-generated documentation.
- Citra Space
Participated · Series A · Apr 2026
Founded in 2024 and based in Colorado Springs, Citra Space was started by former U.S. Space Force and Air Force officers with operational experience in space domain awareness and orbital operations. The company develops space object identification (SOI) and characterization capabilities that merge multiple independent space- and ground-based data sources to create persistent fingerprints and behavioral profiles of on-orbit objects. Citra aims to provide operators a consistent and defensible basis for identifying and characterizing object activity, addressing both identification and characterization gaps. Its customers include both government and commercial space operators. Citra recently closed a $15 million Series A to advance development and deployment of its technology. The company plans to use the proceeds to accelerate delivery of working products for its partners.
- Giant
Participated · Seed · Feb 2026
Giant operates an interactive storytelling platform that lets kids become cartoon characters, star in personalized shows, and build their own digital worlds. The product offers three adaptive experiences—Create, Watch, and Talk—allowing children to design episodes, appear in customized content using their own name and voice, and hold conversations with responsive characters. Led by CEO John Kobs, the San Francisco-based company positions its technology as a way to shift screen time from passive consumption to active engagement. While no user or revenue metrics were disclosed, Giant recently secured outside capital to accelerate development. The company plans to direct the new funds toward scaling operations and expanding its product features. Future initiatives are expected to deepen personalization and broaden the platform’s creative toolkit for young users.