Comparison
Acquired by SentinelOne (2025)
Prompt Security secures employee AI usage and SaaS access. SoterAI secures the AI you build — chatbots, RAG apps, and autonomous agents — with inline runtime enforcement.
Prompt Security (now part of SentinelOne) is strong at workforce AI visibility: discovering shadow AI usage, governing browser and SaaS access, and applying data controls across employees. SoterAI sits in a different place in the stack — it protects the AI applications your team ships. It guards model input and output inline, scans RAG context, authorizes agent tool calls, and produces signed audit trails, with the option to self-host.
Prompt Security is purpose-built for enterprise workforce AI governance — discovering and controlling how employees use AI across browsers and SaaS, backed by SentinelOne's endpoint security platform.
| Capability | SoterAI | Prompt Security |
|---|---|---|
| Input guard (prompt injection) | ||
| Output guard (unsafe content) | ||
| Developer SDK runtime enforcement | Partial | |
| RAG security Doc scan + quarantine | ||
| Agent firewall Tool-call authorization | ||
| Employee AI / SaaS governance Browser + proxy | ||
| Self-hosted (Docker) | ||
| Signed audit exports | Partial | |
| India PII | Partial | |
| Free tier |
✅ = Supported · ❌ = Not supported. Competitor capabilities are summarized from public documentation and may change.
Choose SoterAI when
You are building AI features (chatbot, RAG, agents) and need inline guardrails and audit baked into your application.
Choose Prompt Security when
Your priority is governing how employees use third-party AI tools across browsers and SaaS at enterprise scale.
Fire a prompt-injection or PII attack in the live playground and watch SoterAI block it in under 50ms.
Source: Prompt Security · See the full competitor landscape.
