PromptBrake vs Libretto

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

PromptBrake compared with Libretto
Detail	PromptBrake	Libretto
What it does	Automated AI security testing for chatbots, agents, and APIs	Automatically fix failing Playwright scripts by investigating the live page and opening a GitHub pull request with a proposed code fix
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Free
Pricing	Free trial: 3 scans over 7 days. $99 USD once for 5 scans valid 30 days (no renewal). $499/month for 30 scans per billing month and one active runner license (month-to-month).	Not given
Key features	138 automated checks across 18 attack categories API endpoint and web chatbot testing Self-hosted Docker runner Evidence exports and Baseline Diff CI/CD release gate automation Findings with evidence, business impact, and remediation guidance Behavioral regression detection	Automatically investigates failing Playwright scripts against the live page Opens GitHub pull requests with proposed code fixes Works with any browser provider Supports custom LLM provider API keys Integrates into existing Playwright projects without changing fixtures
What makes it different	Built by an application-security practitioner with GWEB certification Compare test results with Baseline Diff to verify fixes	Keep existing Playwright scripts unchanged, only adding automatic repair after failures Free to use, no charges from Libretto Open source under MIT license
Community votes	0	0
DR (Domain Rating by Ahrefs)	32 +1 (up) since last check	27 no change since last check
Trust Flow (Majestic)	12	8
Citation Flow (Majestic)	29	31
Referring domains (Majestic)	46	347

4 details filled in for both companies.

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