Arthur vs CalypsoAI

Arthur provides an AI Delivery Engine that enables teams to launch, secure, and optimize AI applications across the full lifecycle, from pre-production evaluations to runtime guardrails and production monitoring. The platform supports traditional machine learning, generative AI, and agentic AI with metrics for data drift, accuracy, hallucinations, toxicity, PII detection, and custom evals, while keeping sensitive data local via a federated data-control plane architecture. It targets enterprise AI teams in regulated sectors like banking, healthcare, and insurance, offering deployment flexibility (SaaS, on-prem, AWS, GCP) and integrations like webhooks to Slack/Jira. Distinct from peers, Arthur emphasizes agent discovery & governance and open-source Evals Engine components for real-time performance insights.Arthur homepage, Arthur platform, pricing, PR Newswire Series B, ZoomInfo, LinkedIn

CalypsoAI provides a full-lifecycle platform to secure AI models, applications, and agents at the inference layer against adversarial threats, data leaks, and compliance failures. The platform offers real-time threat defense, proactive red-teaming with agentic testing against thousands of attack prompts monthly, runtime guardrails for sensitive data and policy enforcement, and centralized observability with audit logs for regulatory needs. Targeted at enterprises deploying GenAI, it supports model-agnostic protection across SaaS, on-premises, and hybrid environments, enabling safe innovation without vendor lock-in. Acquired by F5 in 2025 for $180M, its capabilities integrate into F5's application delivery platform.F5 press release, Paladin press, homepage (279 words)