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Vaikora vs Prompt Security
Enterprise GenAI security (now SentinelOne) vs open-core, one-click runtime control.
At a glance
| Capability | Vaikora | Prompt Security |
|---|---|---|
| Open-source option | MIT-licensed, free forever | None, closed source |
| Self-serve / one-click deploy | Docker, AWS, Azure, MCP | Sales-led enterprise onboarding |
| Pre-execution policy enforcement | Deterministic, sub-500ms p95 | Real-time prompt/response controls |
| Cryptographic audit chain | SHA-256, append-only, replayable | Logging and reporting |
| Compliance presets | SOC 2, HIPAA, GDPR, PCI DSS, ISO 27001 | Mapped per deployment |
| Shadow-AI / employee usage discovery | Not the focus | Yes, core strength |
| Requires a security team to run | No | Yes |
| Platform dependency | None, standalone | Strongest inside SentinelOne |
| Pricing | Free OSS + quote-based control plane | Enterprise contract, no free tier |
How they compare
Enterprise GenAI visibility
Prompt Security's strength is breadth of visibility: a browser extension and network sensors show a security team which AI tools employees use and what data they paste in. For inventorying and policing workforce AI usage it is best-in-class, and Vaikora does not compete there.
Pre-execution policy enforcement
Both enforce at runtime. Vaikora's frame is deterministic action-level decisioning: every proposed agent action is evaluated before it executes and returns one of four verdicts in under 500ms. Prompt Security enforces prompt-level and response-level controls in real time.
Audit chain, compliance, and open source
Vaikora signs each decision into a replayable SHA-256 chain and ships SOC 2, HIPAA, GDPR, PCI DSS, and ISO 27001 presets, with an MIT-licensed free gateway. Prompt Security provides logging and dashboards, configures compliance per deployment, and has no open-source or free tier.
Who runs it and platform fit
Prompt Security assumes a security operations team and is strongest inside SentinelOne, which announced its acquisition in August 2025. Vaikora is built so a team without a security org can stand up audit-grade enforcement the same day, standalone, with no incumbent platform.
Who each is best for
Choose Vaikora when
- There is no dedicated security team and enforcement has to be turn-key.
- Audit-grade SHA-256 receipts and named compliance presets are required.
- An MIT-licensed, self-hostable gateway with no lock-in is preferred.
- One-click procurement through AWS Marketplace or Azure Sentinel matters.
Choose Prompt Security when
- Deep visibility into employee and shadow-AI usage is the priority.
- A dedicated security operations team will own the tool.
- The company already runs SentinelOne Singularity.
- DLP-for-AI across the whole workforce is the requirement.
See Vaikora enforce policy on your stack
Open-core AI runtime control. Self-host the MIT gateway free, or run the hosted Control Plane.
Get a demo Self-host the gatewayFrequently asked questions
What is the main difference between Vaikora and Prompt Security?
Vaikora is open-core, deploys in one click, and ships audit-grade enforcement (a SHA-256 audit chain) and compliance presets for teams without a security org. Prompt Security is a closed-source enterprise GenAI security suite, now part of SentinelOne, built for security teams that need workforce-wide AI visibility and DLP.
Is there an open-source or free version of Prompt Security?
No. Prompt Security is an enterprise product with no published open-source or free tier. Vaikora's gateway is MIT-licensed and free forever, with a commercial Control Plane for the audit chain and compliance presets.
Is Prompt Security still independent?
SentinelOne announced an agreement to acquire Prompt Security in August 2025, and the product is being integrated into the SentinelOne Singularity platform. It is strongest for buyers who already run SentinelOne.
Which one do I pick if I do not have a security team?
Vaikora. It is built to give a team audit-grade enforcement and named compliance presets without a dedicated security operations function, and it deploys the same day through Docker, AWS Marketplace, or Azure Sentinel.