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Independent evidence for consequential AI.Explore how we test systems, products and deployments.View all services ↗
UnderstandMap the system, deployment and intended use.TestTest technical boundaries and system behaviour.EvidenceDocument findings and supporting evidence.RemediateAddress weaknesses and retest changes.Assure & monitorSupport decisions as systems evolve.
From questions to evidence.Structured testing. Clear findings. Practical recommendations.Explore our methodology ↗
Agent securityAdversarial instructions, tools and integrations.AI reliabilityBehaviour under ambiguous or incomplete information.Assurance methodologyEvidence that supports real decisions.Governance & deploymentControls, permissions and operational risk.
Understand the failure before it matters.Our research focuses on the behaviour, boundaries and failure modes of enterprise AI.Explore our research ↗
About usIndependent AI assurance, grounded in evidence.Talk to WitcherDiscuss your system and what you need to know.PrivacyHow we handle information.Website termsTerms for using this website.
Clear-eyed assurance for AI in the real world.We help organisations understand system behaviour, identify risk and make informed decisions.Meet Witcher ↗

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The content on this website explains Witcher’s approach and services. It is general information and is not an assurance assessment of any specific system or legal, regulatory or professional advice.

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Testing scope, assessment criteria, deliverables and engagement terms must be agreed separately in writing. Website descriptions do not constitute a certification, a guarantee of safety or a finding that any particular AI product is suitable for deployment.

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