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Brian2 Atlas vs fractal

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

Brian2 Atlas compared with fractal
DetailBrian2 Atlas logo Brian2 Atlas fractal
What it doesDistributed neural simulation with MPI for Brian2 models Long-term memory for AI agents that organizes itself and corrects itself
StageStartup MVP
Founded2026 Not given
Based inGB SE
Pricing modelOpen source Free
PricingNot given Personal: Free during early access. Unlimited memories, all agents with separate memories, no card required. Enterprise: On request, set up by the team for departmental organization with cross-department sharing and direct support.
Key features
  • 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
  • Self-correcting memory that updates when facts change
  • Historical memory queries with time-based retrieval
  • Automatic topic organization and hierarchy
  • Separate memory for each agent with controlled sharing
  • Multi-agent support via MCP, REST API, or LangGraph
  • AES-256 encryption at rest and in backups
  • OAuth 2.1 authentication and API key management
  • Data export and deletion capabilities
  • 37 MCP tools with automated verification on every code change
What makes it different
  • Distributed execution without sacrificing Brian2's familiar modelling interface
  • Open-source with published arXiv paper and reproduction materials
  • Explicit, verifiable execution plans via AtlasIR
  • Understands what changed, when it was true, and where it belongs - beyond vector database similarity
  • Never contradicts itself by automatically replacing outdated facts
  • Fully GDPR aligned with built-in privacy by design
  • Two-minute integration with Claude, ChatGPT, Cursor and any MCP client
  • Data stays in Europe on AWS eu-north-1 and never used for model training
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)Not checked yet −1 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)30
Citation Flow (Majestic)190
Referring domains (Majestic)140

6 details filled in for both companies.

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