# Onyx Platform vs Repello AI ARGUS: side-by-side comparison (2026) [Onyx Platform](https://cybersectools.com/tools/onyx-platform) is a commercial [agentic AI security](https://cybersectools.com/categories/agentic-ai-security) solution by [Onyx Security](https://cybersectools.com/companies/onyx-security). [Repello AI ARGUS](https://cybersectools.com/tools/repello-ai-argus) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [Repello AI](https://cybersectools.com/companies/repello-ai). 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 | | Onyx Platform | Repello AI ARGUS | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Agentic AI Security | LLM Guardrails | | Verified | No | No | | Deployment type | Hybrid | Cloud | | Company size fit | Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | Onyx Security | Repello AI | | Headquarters | – | – | ### Use cases and capabilities | | Onyx Platform | Repello AI ARGUS | |---|---|---| | Agentic AI Security | Yes | – | | AI Governance | Yes | – | | AI Observability | Yes | – | | AI SPM | Yes | – | | LLM Guardrails | Yes | – | | LLM Security | Yes | – | | MCP Security | Yes | – | | Prompt Injection | Yes | – | | Shadow AI | Yes | – | | GenAI Security | Yes | – | | Generative AI | – | Yes | | Policy | – | Yes | ### Core features **Onyx Platform** 10 features listed. Sign in on the page to see them. **Repello AI ARGUS** 10 features listed. Sign in on the page to see them. ### Integrations **Onyx Platform** 11 integrations listed. Sign in on the page to see them. **Repello AI ARGUS** No integrations listed. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [Onyx Platform](https://cybersectools.com/tools/onyx-platform) fits if you need both cloud and on-premises options. - [Repello AI ARGUS](https://cybersectools.com/tools/repello-ai-argus) fits if you want a cloud product and you are a small business. ## Onyx Platform vs Repello AI ARGUS FAQ Common questions when comparing Onyx Platform vs Repello AI ARGUS for agentic AI security. ### What is the difference between Onyx Platform and Repello AI ARGUS? **Onyx Platform**: AI control plane for enterprise AI agent security, governance, and observability. Built by Onyx Security. **Repello AI ARGUS**: Runtime security platform providing guardrails for LLMs and GenAI agents. Built by Repello AI. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Onyx Platform and Repello AI ARGUS? **Onyx Platform** is made by Onyx Security. **Repello AI ARGUS** is made by Repello AI. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Onyx Platform a good alternative to Repello AI ARGUS? In part. Onyx Platform and Repello AI ARGUS are not in the same category on CybersecTools. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Onyx Platform vs CodeIntegrity AARM Platform](https://cybersectools.com/compare/codeintegrity-aarm-platform-vs-onyx-platform) - [Onyx Platform vs Oryo](https://cybersectools.com/compare/onyx-platform-vs-oryo) - [Onyx Platform vs Evoke Security](https://cybersectools.com/compare/evoke-security-vs-onyx-platform) - [Repello AI ARGUS vs CodeIntegrity AARM Platform](https://cybersectools.com/compare/codeintegrity-aarm-platform-vs-repello-ai-argus) - [Repello AI ARGUS vs Oryo](https://cybersectools.com/compare/oryo-vs-repello-ai-argus) - [Repello AI ARGUS vs Evoke Security](https://cybersectools.com/compare/evoke-security-vs-repello-ai-argus) ## Alternatives to each - [See all Onyx Platform alternatives](https://cybersectools.com/alternatives/onyx-platform) - [See all Repello AI ARGUS alternatives](https://cybersectools.com/alternatives/repello-ai-argus) --- Source: https://cybersectools.com/compare/onyx-platform-vs-repello-ai-argus For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/onyx-platform.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Onyx Platform and Repello AI ARGUS: 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