Gray Swan

Gray Swan sells adversarial assessment and runtime behavior enforcement for enterprises deploying AI and laboratories building models.

Verified 11 Nov 2026

Facts

Source per value

Named modules Named AI security modules the vendor lists.: Shade, Cygnal, Arena, and adversarial evaluation services. 1
Runtime guardrails, as documented What the vendor documents for this capability.: Cygnal classifies and blocks adversarial inputs and unsafe agent outputs in production. 1
Agent security, as documented What the vendor documents for this capability.: Supports AI agents with tool access and MCP/tool integrations. 1
Red teaming, as documented What the vendor documents for this capability.: Shade uses adversarial agents to attack models, agents, and guardrails in their deployment context. 1
Latest disclosed round $M Size of the most recent funding round the company or the press reported, in US$ millions.: 40 2
Funding Latest round, lead investor and month, plus the total raised where the source states it.: $40M Series A co-led by Wing Venture Capital and Madrona, May 2026. 2

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