HOL Guard vs Brian2 Atlas

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 Brian2 Atlas
Detail	HOL Guard	Brian2 Atlas
What it does	Runtime security layer that stops risky AI actions before they execute	Distributed neural simulation with MPI for Brian2 models
Stage	Not given	Startup
Founded	Not given	2026
Based in	Not given	GB
Pricing model	Freemium	Open source
Pricing	Free 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	Distributed simulation across MPI ranks Multi-backend execution (CPU, GPU, Browser, MPI) AtlasIR typed intermediate representation Native forward and reverse execution for training Retains Brian2 modelling interface GPU execution on Apple Metal and NVIDIA CUDA WebAssembly browser execution CPU reference and AOT compilation
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	Distributed execution without sacrificing Brian2's familiar modelling interface Open-source with published arXiv paper and reproduction materials Explicit, verifiable execution plans via AtlasIR
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	53 +1 (up) since last check	Not checked yet −1 (down) since last check
Trust Flow (Majestic)	27	3
Citation Flow (Majestic)	44	19
Referring domains (Majestic)	735	14

4 details filled in for both companies.

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