CalypsoAI
ClosedF5 AI Guardrails
San Mateo, United States · Founded 2020 · $38.2M raised
- Headquarters
- San Mateo, California
- Employees
- 11–50
- Founded
- 2020
- Business Model
- B2B
- Website
- calypsoai.com
- Total Funding
- $38.2M
- Last Round
- $23.0M Series AJun 2023
- Rounds
- 3
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
Indexed holds 3 funding rounds and 9 investors for this company. The full record is or through the API.
About
CalypsoAI is an adaptive AI security platform, founded in 2018 by a team with U.S. national security research roots, that helps enterprises protect AI models and agents from evolving threats such as prompt injection and jailbreak attacks. The company opened a Global Co-Headquarters in Dublin, Ireland in 2024 to support its rapid growth. F5 acquired CalypsoAI for $180 million in 2025, and its technology now underpins F5 AI Guardrails.
Summary
CalypsoAI is an Artificial Intelligence company based in San Mateo, United States, founded in 2020. It has raised $38.2M in total across 3 rounds, most recently a $23.0M Series A round in Jun 2023. Investors include Paladin Capital Group, Lockheed Martin Ventures and 8VC.
Tech & App Stack
4 technologies & apps tracked
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Funding History
Jun 2023
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Funding: Seed through Series A. Amounts, valuations, and investors where available.
Investors
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