PromptGuard vs WitnessAI

PromptGuard8.9Visit WitnessAI8.7Visit

Higher score PromptGuard #5 in LLM Security Tools 8.9/10 Free plan Free plan✓ 0 of 5 features Visit PromptGuard

vs

WitnessAI #7 in LLM Security Tools 8.7/10 Pricing on request ✓ 5 of 5 features Visit WitnessAI

• PromptGuard fits best

  Affordable teams needing LLM red teaming

• WitnessAI fits best

  Organizations needing governed AI activity visibility

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Side by side

Feature	PromptGuard 8.9/10 Visit ↗	WitnessAI 8.7/10 Visit ↗
At a glance
Editor score	8.9	8.7
Ranking	#5 in LLM Security Tools	#7 in LLM Security Tools
Best for	Affordable teams needing LLM red teaming	Organizations needing governed AI activity visibility
Pricing model	Free plan + paid	Paid
Starting price	$19/seat/mo	Pricing on request
Free plan	✓ (best)	Not checked yet
Free trial	—	—
Deployment	Cloud, Self-hosted, Desktop, Browser extension	Cloud
Platforms	Web, Windows, macOS, Chrome extension	Web
Compliance	GDPR, SSO/SAML	SOC 2
Integrations	12 integrations	6 integrations
Built for	Small business, Mid-market, Enterprise	Enterprise
Features PromptGuard 0/5 · WitnessAI 5/5
Prompt injection defense	Not checked yet	✓ (best)
PII redaction	Not checked yet	✓ (best)
Secrets detection	Not checked yet	✓ (best)
Output guardrails	Not checked yet	✓ (best)
Model-abuse detection	Not checked yet	✓ (best)
Specs
Deployment model	Not checked yet	Cloud
Our review
Pros	Automated assessments cover 20+ attack vectors and fuzzed variants Integrates with OpenAI, Anthropic, Gemini, Bedrock, Mistral, and more Supports CI/CD regression testing, API scanning, and tool-call validation	Discovers AI activity across employees, applications, models, agents, and MCP connections Blocks prompt injection, jailbreaks, harmful outputs, and policy violations Governs agents, MCP servers, tool calls, data masking, and audit trails
Cons	The Free plan includes only prompt injection and PII detection Scale and Premium do not show prices in the published plan details Advanced enterprise controls are concentrated in the Enterprise plan	Pricing and plan selection require vendor engagement Cloud deployment may not suit organizations requiring another deployment model Its broad enterprise governance scope may exceed narrower AI security needs
Our verdict	PromptGuard is an AI security platform for teams that need to test and protect LLM applications across development and production. It sits between applications and model providers, detecting prompt injection, jailbreak attempts, PII… Read the review →	WitnessAI is a cloud AI security and governance platform for organizations using public and private LLMs, AI applications, developers, and autonomous agents. It is designed for enterprises that need visibility and control across employee… Read the review →

Strengths and trade-offs

• PromptGuard — where it wins

  • Automated assessments cover 20+ attack vectors and fuzzed variants
  • Integrates with OpenAI, Anthropic, Gemini, Bedrock, Mistral, and more
  • Supports CI/CD regression testing, API scanning, and tool-call validation

  Where it doesn't

  • The Free plan includes only prompt injection and PII detection
  • Scale and Premium do not show prices in the published plan details
  • Advanced enterprise controls are concentrated in the Enterprise plan

• WitnessAI — where it wins

  • Discovers AI activity across employees, applications, models, agents, and MCP connections
  • Blocks prompt injection, jailbreaks, harmful outputs, and policy violations
  • Governs agents, MCP servers, tool calls, data masking, and audit trails

  Where it doesn't

  • Pricing and plan selection require vendor engagement
  • Cloud deployment may not suit organizations requiring another deployment model
  • Its broad enterprise governance scope may exceed narrower AI security needs

• PromptGuard8.9/10 · Free plan

  Affordable LLM red teaming with broad integrations and CI/CD testing.

  Visit PromptGuardFull verdict →
• WitnessAI8.7/10 · Pricing on request

  A broad control layer for governing employee, application, agent, and MCP activity.

  Visit WitnessAIFull verdict →