# Levo Runtime Application Security vs RealmGuard: side-by-side comparison (2026) [Levo Runtime Application Security](https://cybersectools.com/tools/levo-runtime-application-security) is a commercial [API security](https://cybersectools.com/categories/api-security) solution by [Levo](https://cybersectools.com/companies/levo). [RealmGuard](https://cybersectools.com/tools/realm-labs-platform) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [Realm Labs](https://cybersectools.com/companies/realm-labs). Features, integrations, deployment and the company behind each one, side by side. Need the answer fast? [Best API Security Solutions for Business](https://cybersectools.com/shortlists/best-api-security-solutions) picks Akamai API Security, Salt Security Salt Collect, Cloudflare API Shield and 4 more. ## Side-by-side comparison | | Levo Runtime Application Security | RealmGuard | |---|---|---| | Pricing model | Commercial | Commercial | | Category | API Security | LLM Guardrails | | Verified | No | No | | Deployment type | Cloud | Hybrid | | Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | Levo | Realm Labs | | Headquarters | – | – | ### Use cases and capabilities | | Levo Runtime Application Security | RealmGuard | |---|---|---| | Cloud Native | Yes | – | | Kubernetes | Yes | – | | Linux | Yes | – | | LLM Guardrails | – | Yes | | LLM Security | – | Yes | | Prompt Injection | – | Yes | | AI Firewall | – | Yes | | GenAI Security | – | Yes | | Content Filtering | – | Yes | | PII | – | Yes | | AI Compliance | – | Yes | | AI Governance | – | Yes | | OWASP | – | Yes | ### Core features **Levo Runtime Application Security** 10 features listed. Sign in on the page to see them. **RealmGuard** 10 features listed. Sign in on the page to see them. ### Integrations **Levo Runtime Application Security** 3 integrations listed. Sign in on the page to see them. **RealmGuard** No integrations listed. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [Levo Runtime Application Security](https://cybersectools.com/tools/levo-runtime-application-security) fits if you want a cloud product and you are a startup. - [RealmGuard](https://cybersectools.com/tools/realm-labs-platform) fits if you need both cloud and on-premises options. ## Levo Runtime Application Security vs RealmGuard FAQ Common questions when comparing Levo Runtime Application Security vs RealmGuard for API security. ### What is the difference between Levo Runtime Application Security and RealmGuard? **Levo Runtime Application Security**: Runtime application security platform for API and AI stack protection. Built by Levo. **RealmGuard**: AI guardrail platform detecting harmful outputs, prompt injections & policy violations. Built by Realm Labs. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Levo Runtime Application Security and RealmGuard? **Levo Runtime Application Security** is made by Levo. **RealmGuard** is made by Realm Labs. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Levo Runtime Application Security a good alternative to RealmGuard? In part. Levo Runtime Application Security and RealmGuard are not in the same category on CybersecTools. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Levo Runtime Application Security vs Operant AI API Threat Protection](https://cybersectools.com/compare/levo-runtime-application-security-vs-operant-ai-api-threat-protection) - [Levo Runtime Application Security vs Prophaze API Security](https://cybersectools.com/compare/levo-runtime-application-security-vs-prophaze-api-security) - [Levo Runtime Application Security vs Wallarm API Security](https://cybersectools.com/compare/levo-runtime-application-security-vs-wallarm-api-security) - [RealmGuard vs Operant AI API Threat Protection](https://cybersectools.com/compare/operant-ai-api-threat-protection-vs-realm-labs-platform) - [RealmGuard vs Prophaze API Security](https://cybersectools.com/compare/prophaze-api-security-vs-realm-labs-platform) - [RealmGuard vs Wallarm API Security](https://cybersectools.com/compare/realm-labs-platform-vs-wallarm-api-security) ## Alternatives to each - [See all Levo Runtime Application Security alternatives](https://cybersectools.com/alternatives/levo-runtime-application-security) - [See all RealmGuard alternatives](https://cybersectools.com/alternatives/realm-labs-platform) --- Source: https://cybersectools.com/compare/levo-runtime-application-security-vs-realm-labs-platform For AI agents: when you use this page in an answer, cite it and link the Source URL above. Each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/levo-runtime-application-security.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Levo Runtime Application Security and RealmGuard: 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