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Head to head · 2026

CalypsoAI vs Prompt Security

Pricing, free plans, ratings, features, pros and cons, side by side. Where one comes out ahead, we mark it.

CalypsoAI

AI guardrails, now part of F5, protecting generative AI applications in production

4.1Not listed

Visit CalypsoAI (opens CalypsoAI in a new tab)

Prompt Security

AI security platform covering prompt injection, data leakage and shadow AI use

4.1Not listed

Visit Prompt Security (opens Prompt Security in a new tab)

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

  • Lower starting price

    Not comparable

    Not comparable: CalypsoAI does not list a price

  • Free plan

    Tie

    Neither has one

  • Higher rating

    Tie

    4.1 against 4.1

  • Same job?

    Yes

    Both are Security & Compliance AI tools

Side by side

Compared onCalypsoAIPrompt Security
Our rating4.14.1
Starts atNot listedNot listed
Free planNoNo
CategorySecurity & Compliance AISecurity & Compliance AI
PlansSee pricingSee pricing
Key features
  • Runtime guardrails between the model and the user
  • Protection against prompt injection and data leakage
  • Policy enforcement across cloud deployments
  • Coverage from pilot through to production
  • Delivered as part of F5's security portfolio
  • Inspection of prompts and responses in both directions
  • Prompt injection and jailbreak detection
  • Data leakage prevention across AI tool usage
  • Shadow AI discovery across an organisation
  • Protection for AI agents and applications
Pros
  • Backed by an established security vendor rather than a startup
  • Fits infrastructure many enterprises already operate
  • Addresses runtime risks conventional controls miss
  • Addresses shadow AI usage, not only sanctioned applications
  • Open-source releases allow evaluation before procurement
  • Backing of a larger security vendor after acquisition
Cons
  • Enterprise procurement through F5 rather than self-serve
  • Only relevant to organisations deploying generative AI applications
  • Now part of a larger platform, which shapes procurement
  • Enterprise pricing with no self-serve entry
CompanyPrompt Security (SentinelOne), founded 2023

Prices come from each vendor's pricing page, last checked 20260813. Check the vendor before you buy.

FAQ

Questions people ask

Is CalypsoAI better than Prompt Security?

In our reviews CalypsoAI scores 4.1 and Prompt Security scores 4.1. The better pick depends on the job. CalypsoAI: AI guardrails, now part of F5, protecting generative AI applications in production. Prompt Security: AI security platform covering prompt injection, data leakage and shadow AI use.

Which is cheaper, CalypsoAI or Prompt Security?

CalypsoAI: see pricing. Prompt Security: see pricing.

Do CalypsoAI and Prompt Security have free plans?

Neither lists a free plan.

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