VitalStage Ventures
San Francisco, CA, United States
Overview
vitalstage ventures seeks to help entrepreneurs navigate the vital stages of company development
- Total investments
- 3
- Lead investments
- 1
- Investments · 12mo
- 1
- Active investors
- 0
Investment portfolio
- Overworld
Participated · Seed · Jan 2026
Overworld is a Providence, Rhode Island-based startup building AI-native world models that function locally on devices such as gaming PCs and Chromebooks. Its core technology pairs diffusion models with real-time, responsive systems so open-ended, human-directed digital environments can operate without data-center latency or cloud dependence. By running on local GPUs, the company aims to reduce environmental overhead while delivering seamless interactive experiences. A recently released research preview demonstrated that its diffusion models can serve as continuous, interactive worlds on consumer hardware, validating the feasibility of its approach. Led by CEO Louis Castricato and Chief Science Officer Shahbuland Matiana, Overworld positions itself at the intersection of generative AI and immersive computing. The company plans to use fresh capital to deepen R&D, build a foundation for scalable AI-native world models, and advance its on-device technology stack. No revenue, user, or other operating metrics have been publicly disclosed.
- Joinable Labs
Participated · Seed · Aug 2025
Joinable Labs offers a Time-to-Intelligence (TTI) Acceleration Platform and its debut product, RAG in a BOX, to help teams prototype and deploy private AI systems rapidly using proprietary data. The platform extracts unstructured and siloed enterprise data, parses it into AI-ready formats, and trains private, secure models while preserving data control and privacy. RAG in a BOX enables Retrieval-Augmented Generation (RAG) prototypes by loading custom data, selecting from top-tier LLMs, and deploying via no-code templates or an API. Joinable positions its stack to work across data types and deployment environments for both startups and enterprises. The company says its platform can accelerate time-to-production by up to 50x and plans roadmap additions including model evaluation tools, scalable data processing, custom fine-tuning, and community-powered data aggregation and self-labeling. Joinable is headquartered in San Francisco and is led by experienced AI and Web3 founders with prior startup and corporate AI leadership.
- CodeAnt AI
Led · Seed · May 2025
CodeAnt AI provides an AI code reviewer that automatically reviews pull requests, summarizes changes, flags issues, and offers one-click fixes. It also offers a code quality platform that continuously scans codebases for smells, dead/duplicate/complex code, and adds docstrings while providing real-time quality insights. Its code security platform monitors code, infrastructure, and dependencies to detect vulnerabilities and secrets and deliver real-time security insights. The product integrates across the development workflow from IDEs to pull requests to CI/CD. The company says its tools help enterprises reduce manual code review time by over 50%. CodeAnt plans to use the new funding to expand engineering and business development teams and to scale its platform.
Team
No current team members are available.