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HOL Guard vs AI21

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

HOL Guard compared with AI21
Detail HOL GuardAI21 logo AI21
What it doesRuntime security layer that stops risky AI actions before they execute Post-train specialized models for your task, creating an AI edge your competitors can't buy
StageNot given Established
FoundedNot given Not given
Based inNot given IL
Pricing modelFreemium Contact for pricing
PricingFree plan: Local Guard runtime with real-time approval prompts and local audit log. Solo $4.99/mo: adds 2 cloud-connected devices and 30-day cloud retention. Pro $15/mo: adds 5 cloud-connected devices, 180-day retention, and policy versioning. Team $30/seat/mo: up to 25 cloud-connected devices, 365- Not given
Key features
  • Surface-specific pre-action interception
  • Policy routing with allow, observe, ask, and block outcomes
  • Local review and evidence workflows
  • MCP, skill, plugin, and package inspection
  • Layered local and team policy
  • Open source runtime under Apache-2.0
  • Offline local protection without cloud connectivity
  • Continuous GitHub leaked-secret monitoring
  • Decision audit trail and export
  • Support for multiple AI coding agents
  • Forward-Deployed Researchers provide end-to-end model training and optimization
  • Custom evaluation suite development from real tasks
  • Production-ready deployment with cost-quality trade-offs
  • Deployment flexibility including on-premises and VPC options
  • Data security with no retention and full traceability
  • Continuous model improvement from production traffic
  • Customer ownership of model weights and training recipes
What makes it different
  • Open-source core runtime runs locally without cloud requirement
  • Protects against secrets, destructive commands, prompt injection, and supply chain attacks
  • No source code or secrets uploaded; decisions stored as redacted summaries
  • Customers own specialized models trained on proprietary data, not rented general-purpose models
  • Achieve frontier-level quality at lower costs through specialized training
  • Five years of experience with diverse post-training and optimization methods
  • Models ship production-ready in weeks with ongoing improvement capability
  • Secure deployment with no data retention and auditable access controls
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)53 +1 (up) since last check75 no change since last check
Trust Flow (Majestic)2722
Citation Flow (Majestic)4444
Referring domains (Majestic)7353529

4 details filled in for both companies.

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