# Capsule Runtime Security for AI Agents vs Plainsea Agentic Penetration Testing Platform: side-by-side comparison (2026) [Capsule Runtime Security for AI Agents](https://cybersectools.com/tools/capsule-runtime-security-for-ai-agents) is a commercial [agentic AI security](https://cybersectools.com/categories/agentic-ai-security) solution by [Capsule Security](https://cybersectools.com/companies/capsule-security). [Plainsea Agentic Penetration Testing Platform](https://cybersectools.com/tools/plainsea-agentic-penetration-testing-platform) is a commercial [penetration testing](https://cybersectools.com/categories/pentesting-tools) solution by [Plainsea](https://cybersectools.com/companies/plainsea). Features, integrations, deployment and the company behind each one, side by side. Need the answer fast? [Best Agentic AI Security Solutions for Business](https://cybersectools.com/shortlists/best-agentic-ai-security-solutions) picks CrowdStrike Falcon Guardian, Rubrik Agent Cloud, Silverfort AI Agent Security and 5 more. ## Side-by-side comparison | | Capsule Runtime Security for AI Agents | Plainsea Agentic Penetration Testing Platform | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Agentic AI Security | Penetration Testing | | Verified | No | No | | Deployment type | Cloud | Cloud | | Company size fit | Mid-Market, Enterprise | Mid-Market, Enterprise | | Company | Capsule Security | Plainsea | | Headquarters | – | – | ### Use cases and capabilities | | Capsule Runtime Security for AI Agents | Plainsea Agentic Penetration Testing Platform | |---|---|---| | Agentic AI Security | Yes | Yes | | Runtime Security | Yes | – | | AI Observability | Yes | – | | LLM Security | Yes | – | | LLM Guardrails | Yes | – | | Prompt Injection | Yes | – | | OWASP | Yes | – | | MITRE ATT&CK | Yes | – | | NIST | Yes | – | | Least Privilege | Yes | – | | AI Pentesting | – | Yes | | Penetration Testing Framework | – | Yes | | Continuous Testing | – | Yes | | Red Team | – | Yes | | Vulnerability Prioritization | – | Yes | | Security Reporting | – | Yes | | VAPT | – | Yes | | Security Validation | – | Yes | ### Core features **Capsule Runtime Security for AI Agents** 10 features listed. Sign in on the page to see them. **Plainsea Agentic Penetration Testing Platform** 10 features listed. Sign in on the page to see them. ## Capsule Runtime Security for AI Agents vs Plainsea Agentic Penetration Testing Platform FAQ Common questions when comparing Capsule Runtime Security for AI Agents vs Plainsea Agentic Penetration Testing Platform for agentic AI security. ### What is the difference between Capsule Runtime Security for AI Agents and Plainsea Agentic Penetration Testing Platform? **Capsule Runtime Security for AI Agents**: Runtime security platform for AI agents with discovery, observability, and enforcement. Built by Capsule Security. **Plainsea Agentic Penetration Testing Platform**: Agentic AI platform for continuous, full-lifecycle penetration testing. Built by Plainsea. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Capsule Runtime Security for AI Agents and Plainsea Agentic Penetration Testing Platform? **Capsule Runtime Security for AI Agents** is made by Capsule Security. **Plainsea Agentic Penetration Testing Platform** is made by Plainsea. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Capsule Runtime Security for AI Agents a good alternative to Plainsea Agentic Penetration Testing Platform? In part. Capsule Runtime Security for AI Agents and Plainsea Agentic Penetration Testing Platform are not in the same category on CybersecTools. Both cover Agentic AI Security. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Capsule Runtime Security for AI Agents vs Certiv](https://cybersectools.com/compare/capsule-runtime-security-for-ai-agents-vs-certiv) - [Capsule Runtime Security for AI Agents vs Verno Labs Platform](https://cybersectools.com/compare/capsule-runtime-security-for-ai-agents-vs-verno-labs-platform) - [Capsule Runtime Security for AI Agents vs Tenet Security Platform](https://cybersectools.com/compare/capsule-runtime-security-for-ai-agents-vs-tenet-security-platform) - [Plainsea Agentic Penetration Testing Platform vs Certiv](https://cybersectools.com/compare/certiv-vs-plainsea-agentic-penetration-testing-platform) - [Plainsea Agentic Penetration Testing Platform vs Verno Labs Platform](https://cybersectools.com/compare/plainsea-agentic-penetration-testing-platform-vs-verno-labs-platform) - [Plainsea Agentic Penetration Testing Platform vs Tenet Security Platform](https://cybersectools.com/compare/plainsea-agentic-penetration-testing-platform-vs-tenet-security-platform) ## Alternatives to each - [See all Capsule Runtime Security for AI Agents alternatives](https://cybersectools.com/alternatives/capsule-runtime-security-for-ai-agents) - [See all Plainsea Agentic Penetration Testing Platform alternatives](https://cybersectools.com/alternatives/plainsea-agentic-penetration-testing-platform) --- Source: https://cybersectools.com/compare/capsule-runtime-security-for-ai-agents-vs-plainsea-agentic-penetration-testing-platform For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/capsule-runtime-security-for-ai-agents.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Capsule Runtime Security for AI Agents and Plainsea Agentic Penetration Testing Platform: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md