CalypsoAI

Dublin, Ireland Software & Technology Acquired

CalypsoAI is an enterprise AI/LLM security and governance platform that provides real-time threat defense, red teaming at scale, and data security for organizations deploying generative and agentic AI systems. The platform proactively secures AI at inference with agentic red-teaming, real-time defense against prompt injection and jailbreak attacks, and automated security enforcement with guardrails to detect and prevent sensitive data leakage and policy violations.

Acquired

CalypsoAI has been acquired

Acquired by F5 September 11, 2025 $180M

This company is no longer available on our private secondary market.

Overview

Company data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.

Founded

2018

Total Funding

$36M

2 rounds

Funding

Total raised $36M across 2 rounds

Funding data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.

Last updated 06-25-2026

Latest Round

Type

Series A-1

Date

June 27, 2023

Amount

$23M

Valuation

Lead Investors

Paladin Capital Group
DateRoundAmount RaisedValuationLead Investors
June 27, 2023 Series A-1 $23M Paladin Capital Group
July 22, 2020 Series A $13M Paladin Capital Group

Leadership

  • Donnchadh Casey

    Chief Executive Officer

  • Neil Serebryany

    Founder & Board Member

    LinkedIn
  • James White

    Chief Technology Officer & President

Competitors

Competitor list is illustrative and may be incomplete, stale, or erroneous.

  • Lakera

    AI safety platform providing guardrails and defense against LLM attacks and data leakage

  • Robust Intelligence

    AI security platform for testing and monitoring ML/AI models in production

  • Protecto AI

    Data governance and privacy protection for AI applications

  • Hugging Face

    AI model hosting and fine-tuning platform with safety considerations

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