PromptBrake vs Perfai Security
Detailed side-by-side comparison to help you choose the right tool
PromptBrake
AI Security
PromptBrake is a paid AI security testing platform for live LLM endpoints, AI APIs, and chatbots. It runs repeatable adversarial scans for prompt injection, data leakage, unsafe tool behavior, output-control bypasses, memory exposure, retrieval injection, and launch-readiness failures, then reports PASS, WARN, and FAIL findings with evidence and remediation guidance.
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Starting Price
CustomPerfai Security
🟡Low CodeAI Security
Autonomous, agentic application security platform for AI-built and vibe-coded apps: its agents learn your app, exploit real business-logic, access-control, and prompt-injection flaws, then ship the fix as a pull request.
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CustomFeature Comparison
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PromptBrake - Pros & Cons
Pros
- ✓Tests the real application endpoint instead of only evaluating a standalone prompt, so results reflect prompts, tools, retrieval, auth path, and response handling together
- ✓Covers 13 checks and 60+ failure patterns, including prompt injection, context leaks, tool misuse, schema escape, memory exposure, retrieval injection, and chatbot launch checks
- ✓Reports PASS, WARN, and FAIL outcomes with the strongest triggering prompt, endpoint response evidence, remediation guidance, and a targeted re-test path
- ✓Pro Trial at $99/month includes workflow-oriented capabilities such as reports, compare view, baseline diff, and CI-ready release-gate preview
- ✓Enterprise Trial includes 3 hosted app scans plus 14 private runner scans, with the private runner trial lasting 14 days
- ✓Enterprise Docker runner can run on a customer machine, VM, or CI worker while keeping prompts, credentials, and scan results local
Cons
- ✗Requires a working live, dev, or staging API endpoint because PromptBrake tests behavior by sending adversarial prompts to the endpoint
- ✗Scout Trial is positioned as a lower-volume first pass and does not include the fuller release workflow described for Pro
- ✗Enterprise private runner pricing starts at $499/month after the trial, which may be high for small teams that only need occasional hosted scans
- ✗The product focuses on AI behavior security and does not replace application penetration testing, infrastructure review, authentication review, or authorization testing
- ✗A PASS result is point-in-time evidence for the tested endpoint and test suite, not a permanent guarantee against future model, retrieval, prompt, or tool regressions
Perfai Security - Pros & Cons
Pros
- ✓Purpose-built for vibe-coded apps — targets the AI-native threat categories (prompt injection, RAG abuse, IDOR, business logic) that generic scanners miss.
- ✓Real-exploit validation dramatically cuts the false-positive noise that makes most scanner reports unusable for solo founders.
- ✓Auto-fix pull requests and push-to-tool fixes (Cursor, Claude Code, Copilot, Replit, Windsurf) mean remediation lands in the workflow you already use.
- ✓Free tier gives first findings in 20 minutes with 900 credits/month — enough to actually evaluate on a real app.
- ✓Continuous testing model (not scheduled scans) matches how fast AI-generated codebases actually change.
Cons
- ✗Agentic AppSec is a young category — treat auto-fix PRs as suggestions to review, not accept-blindly commits.
- ✗Credit-based pricing means very active apps can exhaust Pro (1,800/mo) and be pushed to Growth ($499/mo).
- ✗No MCP server or client advertised, so it doesn't slot into MCP-native agent stacks today.
- ✗Live-production coverage of your own domains is gated to Enterprise/MSSP — smaller plans focus on pre-launch and staging.
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