About Hypercubic
Hypercubic is an AI-native platform for mainframe operations and modernization. Its products document opaque COBOL codebases, give AI agents a development environment on the mainframe, and run verification-driven modernization. It serves enterprises and governments in banking, insurance, and other industries that still depend on mainframes.
What is Hypercubic?
What is Hypercubic?
Hypercubic focuses on the legacy mainframe systems that still run core applications at many large enterprises. The company says about 70% of Fortune 500 companies still rely on them, and that these systems have become harder to understand as their original developers retire.
Hypercubic offers several products. HyperDocs turns COBOL codebases into living, searchable documentation. Hopper is described as the first agentic development environment for the mainframe, letting AI agents operate across TN3270, ISPF, JCL, JES, CICS, VSAM, datasets, and jobs. HyperLoop is a verification-driven system for modernizing COBOL applications with AI. The company also references HyperTwin. Together, the aim is to turn mainframe modernization from a bespoke human effort into a repeatable, software-driven process, while also preserving tribal knowledge and supporting day-to-day operations.
Hypercubic went through Y Combinator's Fall 2025 batch and is based in San Francisco. It was founded in 2025 by Sai Gurrapu (CEO) and Aayush Naik (CTO). In August 2026 it announced a $5.3 million seed round led by CIV.
Pros
- Purpose-built for COBOL and mainframe environments
- Covers documentation, agent-driven operations, and modernization
- Verification-driven approach to rewriting legacy code
- Helps capture tribal knowledge as mainframe experts retire
Cons
- Enterprise sales process; demos are requested rather than self-serve
- Only relevant to organizations running mainframes
- Modernization projects remain large undertakings even with automation
How to Use Hypercubic
- 1Request a demo
Contact Hypercubic through its website to discuss your mainframe environment.
- 2Document the codebase
Use HyperDocs to turn COBOL code into searchable documentation.
- 3Operate with agents
Use Hopper so AI agents can work across mainframe tools such as JCL, CICS, and VSAM.
- 4Modernize with verification
Run HyperLoop to modernize applications with verification of behavior.