DeepKeep vs Prompt Security (2026): Pricing, Features & Which to Choose

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: DeepKeep does not list a price
Free plan
Tie
Neither has one
Higher rating
Prompt Security
4.0 against 4.1
Same job?
Yes
Both are Security & Compliance AI tools

Side by side

Compared on	DeepKeep	Prompt Security
Our rating	4.0	4.1Better
Starts at	Not listed	Not listed
Free plan	No	No
Category	Security & Compliance AI	Security & Compliance AI
Plans	See pricing	See pricing
Key features	AI Firewall that inspects prompts and outputs for injection and leakage attempts Automated AI red teaming that probes models for jailbreaks before deployment Model scanning for vulnerabilities across LLM and computer-vision systems AI Usage Control for setting and enforcing organizational guardrails Coverage extending to agentic AI systems, beyond single-model deployments	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	Covers both LLMs and computer-vision models, a wider scope than most LLM-only security tools Automated red-teaming catches jailbreak paths before a model reaches production Backed by seed funding earmarked specifically for platform expansion	Addresses shadow AI usage, not only sanctioned applications Open-source releases allow evaluation before procurement Backing of a larger security vendor after acquisition
Cons	No published pricing, so budgeting requires a sales conversation up front Young platform (founded 2021) with a smaller public track record than incumbent security vendors Enterprise focus means self-serve signup is not available	Now part of a larger platform, which shapes procurement Enterprise pricing with no self-serve entry
Company	DeepKeep, founded 2021	Prompt 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 DeepKeep better than Prompt Security?

In our reviews DeepKeep scores 4.0 and Prompt Security scores 4.1. The better pick depends on the job. DeepKeep: AI-native security platform that firewalls, red-teams, and scans LLMs and computer-vision models against adversarial threats. Prompt Security: AI security platform covering prompt injection, data leakage and shadow AI use.

Which is cheaper, DeepKeep or Prompt Security?

DeepKeep: see pricing. Prompt Security: see pricing.

Do DeepKeep and Prompt Security have free plans?

Neither lists a free plan.

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