CalypsoAI
Model-agnostic AI guardrails and automated red teaming, now F5 AI Guardrails.
Acquired — still operating
acquired by F5 Sep 2025 (~$145M); brand retired, sold as F5 AI Guardrails
About
CalypsoAI built an inline guardrails layer for generative and agentic AI — real-time prompt injection defense, data-loss prevention, and content controls — plus red teaming at scale with a library of over 10,000 attack prompts and a CASI security score for models.
F5 acquired the company in September 2025 for about $145M in cash, retired the brand, and now sells the technology as F5 AI Guardrails and F5 AI Red Team. This is a historical entry; buyers should look at F5's AI security line instead.
What it can do
- Real-time AI guardrails layer
- Automated red teaming at scale
- CASI model security scoring
- Model-agnostic policy enforcement
Setup
Standalone product retired; capabilities are now sold as F5 AI Guardrails.
Prerequisites
F5 platform licensing for current access.
Use cases
Works with
Trust score — 7/10
Scored 7/10 (metrics tier, metrics-v1). Evidence: Verified via vendor site/docs/GitHub and reputable coverage, wave 76; Trending score 68/100 from researcher assessment.
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.