Prompt Inspector vs Straiker Defend AI

Prompt Inspector

Figure	Prompt Inspector	Straiker Defend AI
Price from	Free	—
Free plan	Yes	—
Free trial	—	—
Open source	Yes	—
Web	Yes	Yes
Windows	Yes	—
macOS	Yes	—
Linux	Yes	—
API	Yes	Yes
Self-hosted	Yes	Yes
Plans published	5	1
Spec score · LLM Security Tools	8.5 (#5)	6.7 (#26)
Integrations	The maker lists a REST API, Python SDK, Node.js SDK, MCP server, and agent skills for OpenClaw and Claude Code.	Straiker lists integrations with Amazon Bedrock AgentCore, Google Vertex AI, Microsoft AI Foundry, Microsoft Copilot Studio, Kong AI Gateway, and LiteLLM; it also describes OpenAI and Anthropic partnerships.
Pricing detail	The maker describes cloud pricing as pay-as-you-grow but does not state a price on the opened homepage.	The AWS Marketplace listing says pricing depends on contract duration and terms, and asks buyers to contact the vendor to scope Units; it does not define what one Unit represents.
Purpose	Prompt Inspector provides real-time prompt injection detection, sensitive word filtering, and AI safety guardrails through an API call.	Defend AI provides runtime security for coding, productivity, and custom-built AI agents, detecting and blocking prompt injection, data exfiltration, and agent manipulation.
Threat detection	Its detection engine checks for prompt injections, jailbreaks, and system prompt leaks.	The product page says Defend AI inspects prompts, reasoning steps, and tool calls, and reports 98.1% detection accuracy at under 300 ms latency.

Prompt Inspector has no write-up on Specifiction yet; its figures are above.

Straiker Defend AI has no write-up on Specifiction yet; its figures are above.