Better Auth vs Perfai Security
Detailed side-by-side comparison to help you choose the right tool
Better Auth
🔴DeveloperAI Security
A comprehensive open-source TypeScript authentication framework with a growing plugin ecosystem, including first-class MCP OAuth support.
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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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Better Auth - Pros & Cons
Pros
- ✓MIT-licensed core avoids mandatory per-MAU pricing
- ✓TypeScript-first APIs fit modern JavaScript application stacks
- ✓Plugins cover organizations, passkeys, MFA, and MCP-oriented OAuth flows
- ✓Application owners retain control of identity data and database design
Cons
- ✗The application team owns security patching, deliverability, backups, and incident response
- ✗Plugin interactions and framework adapters require integration testing
- ✗No managed-service SLA is included with the open-source package
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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