Realm Labs
Track on RadarDetects prompt injection and jailbreaks via internal LLM inspection of AI apps.
- Total raised
- $5M
- Employees
- 9
- Founded
- 2023
- Momentum
- —
Data updated June 2026
About
About Realm Labs
At a glance
Realm Labs is a cybersecurity company specializing in AI Security, founded in 2023 and headquartered in Sunnyvale, United States. It has raised $5M in total funding, employs about 9 people, and is privately held.
Realm Labs is an AI security company founded by researchers with backgrounds in adversarial machine learning, AI safety and explainability, and large-scale systems and supply-chain security. The founding team collectively holds 20 patents and more than 5,000 academic citations. The company's core technology is called Deep Neural Inspection (DNI), a proprietary research-based approach that analyzes the internal mathematical representations (manifolds) of large language models (LLMs) as they process requests. Rather than evaluating the text output a model produces, DNI inspects the model's internal state to detect threats and unsafe behaviors at the source. DNI is designed to identify: - Prompt injection attacks - Jailbreaks - Data exfiltration attempts - Unsafe or unintended model behavior The company's position is that an LLM's true intent is only visible within its internal representations, not in its language output, and that this internal inspection point cannot be forged by the model itself. Realm Labs targets enterprises deploying AI systems in production workflows, products, and decision-making processes. The company frames its mission around providing accountability, oversight, and controllability for AI systems, with a focus on making AI observable and production-ready. The company is backed by investors including Crosspoint Capital and advisors including the Deputy CISO of Anthropic, the inventor Paul Kocher, and the Executive Chairman of RSAC.
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FAQ
Frequently asked questions about Realm Labs
When was Realm Labs founded?▾
Realm Labs was founded in 2023.
Where is Realm Labs headquartered?▾
Realm Labs is headquartered in Sunnyvale, United States.
How much funding has Realm Labs raised?▾
Realm Labs has raised a total of $5M in total funding.
Is Realm Labs public or private?▾
Realm Labs is a privately-held company.
How many employees does Realm Labs have?▾
Realm Labs has approximately 9 employees.