Lakera vs PromptBrake
Detailed side-by-side comparison to help you choose the right tool
Lakera
🔴DeveloperAI Security
Real-time AI security platform that protects LLM applications from prompt injection, data exfiltration, jailbreaks, and unsafe outputs.
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CustomPromptBrake
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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Lakera - Pros & Cons
Pros
- ✓Detection models trained on the largest public adversarial dataset (Gandalf, 60M+)
- ✓Latency genuinely fast enough for synchronous inline use, not just async logging
- ✓Both prompt and response screening in one API — covers the full I/O surface
- ✓SOC 2 Type II + EU origin makes compliance conversations easier
- ✓Open PINT benchmark gives credibility versus closed-evaluation competitors
Cons
- ✗Pricing opacity makes early-stage budgeting hard — must talk to sales
- ✗Free tier is small (1K req/month) — production prototypes hit limits fast
- ✗Adds a network hop and per-call cost on top of the LLM bill
- ✗Custom policies still require some prompt-engineering expertise to author
- ✗No general-purpose content moderation beyond the LLM-security focus
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
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