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Stealthium
Founded 2025 · 5 known investors
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Stealthium provides a runtime observability and security platform for GPUs and AI workloads, correlating low-level GPU metrics, kernel traces, and logs into unified insights across single or multiple nodes and clusters. It monitors GPU telemetry to detect unusual usage patterns and security threats, with support for the NVIDIA software stack (drivers, CUDA, toolkits) and major AI frameworks.
Also known as Stealthium
Investors · 5
How we know: 6 Degrees Capital's portfolio page · Not right? Tell us
How we know: the VCSheet dataset · Not right? Tell us
How we know: the VCSheet dataset · Not right? Tell us
How we know: press coverage · Not right? Tell us
Company profile
researched Aug 2026Stealthium is a security and observability company focused on the AI accelerated runtime layer. Its platform provides multilayer visibility into GPUs and AI workloads, spanning a single node and single cluster through to multiple nodes and multi-cluster deployments, using paired guest-side and host-side components that sit alongside AI applications and the AI workload fabric.
The product converts low-level GPU metrics and kernel traces into an abstraction the company calls Hyperprints, intended to translate raw telemetry signals into interpretable statements about AI workload performance rather than isolated metric anomalies. Alongside performance analysis, it monitors AI workloads and GPUs for unusual usage patterns using GPU-specific telemetry, and correlates security events with GPU runtime telemetry to identify potential threats across GPU workload instances. The company states support for the NVIDIA software stack, including drivers, toolkits and CUDA, as well as major AI frameworks.
Coverage of the company describes a broader focus on AI accelerators — specialized chips that are neither CPUs nor GPUs — and on "neo-clouds," AI-first specialized cloud providers built around such accelerators. Third-party descriptions also characterize the platform as runtime security and behavioral monitoring for cloud workloads, virtualization environments and AI model infrastructure.
Compiled by commissioned research from 7 cited public sources — announcements, filings, and press listed under research sources below.
Founder mafia
2 people who came through Stealthium went on to found or lead other companies.
Timeline · 2
launches, deals, and filingsVenture firm Propeller announced a $50 million Fund III and identified Stealthium as one of five investments made from the fund in 2025, alongside Codemod, Netpreme, Pebble and Ciphero AI. The amount invested in Stealthium was not disclosed.
Stealthium was listed as an active seed portfolio company in Mango Capital's Q2 2025 cohort; it is also shown as backed by Encoded Ventures.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 7
primary sources listed
- Stealthiumstealthium.com · web
7 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Stealthium do?
- Stealthium builds a runtime observability and security platform for GPUs, AI accelerators and AI workloads.
- Who are Stealthium's investors?
- Stealthium's investors include 6 Degrees Capital, Encoded Ventures, Mango Capital, Propeller Inc., The Westly Group.