Prompt Security alternatives

Tools that do what Prompt Security does, found by what they say they do rather than by shelf. Among the equally alike, the most used come first. Each line says how it differs from Prompt Security.

Read 2026-11-02

With a free plan or free to use: Lakera, AI Security Guard, ClawSecure, AgentShield.

10 alternativesUnlike Prompt Security

#1
Lakera Security
Detects and prevents prompt injection attacks, data leakage, and jailbreaks in AI applications with real-time threat detection.
Free planAround longer, since 1993
2.9k
Maintained
Free plan
1993
#2
AI Duel LLM operations
Protects LLM applications from prompt injection, jailbreaks, and data leakage in production traffic.
Same job
2
Active
2025
#3
Kalpit Labs Security
Detects and blocks prompt injection, jailbreaks, and data leaks in LLM applications in real time.
Same job
Emerging
Maintained
#4
AI Security Guard Security
Detects malicious packages, scans prompts for injection attacks, and monitors agent runtime security.
Free plan
675
Maintained
Free
2025
#5
ClawSecure Developer tools
Scans AI agent skills for security vulnerabilities and monitors runtime behavior for prompt injection and data exfiltration threats.
Free plan
46
Active
From $9.99/mo
#6
TrustRed Security
Evaluates and protects AI applications against security and safety vulnerabilities through testing and real-time input monitoring.
Same job
2
Maintained
#7
AgentShield Security
Detects prompt injection, jailbreak, and data exfiltration attacks on LLM requests in real time.
Free plan
29 linking domains
Active
From $29/mo
#8
Lasso Security Security MCP · sign-in
Discovers AI agents, assesses security risks through red teaming, and enforces policies at runtime across enterprise deployments.
Same job
1.5k
Active
#9
Varonis Security
Discovers, classifies, and monitors sensitive data; detects and prevents data exfiltration and identity-based attacks.
Also: AnalyticsCan run on your servers
137k
Active
2005
#10
Protecto Security
Detects and masks sensitive data in real time across AI pipelines, enforcing access control and maintaining audit logs.
Also: Analytics, Compliance
9.6k
Active

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How this list is made: the words Prompt Security is described with (what it does, for whom, what it is used for) are matched against every tool in the Atlas. A tool on the same shelf, or doing the same kind of work, counts for a little more. Nothing here is paid for.