What are the best automated security validation tools in 2026?

We are moving away from point-in-time quarterly pentests and looking to adopt a continuous validation model. We are evaluating platforms that use an AI engine to understand new threats and tailor validation tests specific to our environment. They claim one-third of exploited CVEs are targeted within 24 hours of disclosure, so waiting for manual testing is no longer viable.

For those using this type of AI-driven testing, how accurate is the generated test logic? Does it actually find novel attack paths based on your unique misconfigurations, or is it just re-packaging the same MITRE ATT&CK simulations with a fancy UI? Looking for real world feedback before we buy.