Arbis

| Aspect | Arbis (arbis.ai) | Microsoft Defender for Endpoint (AI agent runtime protection) | Lakera Guard | |--------|------------------|-----------------------------|-------------| | Starting Price | Not published | Not published (part of Microsoft security licensing; varies) | Not published (enterprise pricing, demo-driven) | | Best For | Organizations seeking runtime verification and per-decision audit records for regulated environments | Security-focused organizations standardized on Microsoft security tooling; endpoint-centric control and discovery | Organizations prioritizing prevention of prompt attacks and data leakage across apps/agents | | Key Strength | Vendor materials emphasize per-decision capture, multi-agent lineage capabilities, reporting intended for audit use, and a cryptographic verification option for design partners | Native integration with enterprise security operations and device visibility; operational maturity in Microsoft ecosystems | Focused security controls for generative AI risks and developer-friendly guardrails | | Key Weakness | Early-stage commercial posture; limited public validation of claims; security certifications and pricing not publicly documented; ambiguity in how reasoning traces are handled | May prioritize security telemetry and endpoint signals over compliance evidence frameworks | Primarily a security/guardrail product and may not provide comprehensive compliance evidence without additional governance tooling | - Narrative analysis - Areas the vendor emphasizes (based on vendor statements): - Audit defensibility objectives, including claims of tamper-evident logs and per-decision verification mechanisms - Multi-agent lineage and continuous evidence generation intended to support regulatory reporting - Areas where competitors may have operational advantages: - Microsoft: broader integration with enterprise security stacks and operational maturity - Lakera/Aporia/Future AGI: more established adoption for typical guardrail needs (prompt injection prevention, content safety, PII filters) with more publicly available developer documentation - Specialized runtime enforcement startups may provide stricter pre-execution gating of tool calls and tighter execution-time controls - Buyer takeaway - Enterprises are likely to assemble a stack that includes guardrails, runtime enforcement, observability, and GRC tooling. Arbis appears to target the runtime verification and audit evidence layer. Whether it substitutes for other guardrail or enforcement tools depends on its actual enforcement depth, integration coverage, and operational maturity.