Brian2 Atlas vs Argentic

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 Argentic
Detail	Brian2 Atlas	Argentic
What it does	Distributed neural simulation with MPI for Brian2 models	An engine for long-running agents that rebuilds its prompt under a cap and runs on your budget
Stage	Startup	MVP
Founded	2026	Not given
Based in	GB	Not given
Pricing model	Open source	Freemium
Pricing	Not given	Prototype: free during beta, then from December 16, 2026 it costs $1 per 1,000 agent calls after 1,000 monthly included calls. Production: $20 a month with 20,000 agent calls included, then $1 per 1,000 calls after that. Top-ups: $1 per 1,000 calls, from $10 to $500 at a time, never expiring.
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	Prompt rebuilt from journal under token cap at each step to keep it bounded as history grows Spending limits checked before each model call at token prices you declare Resume after crash without repeating finished actions Tool calls returned as actions for your code to carry out Proof of what ran: check prompts, re-run engine, download hash-chained journal Integrations with Vercel AI SDK, OpenAI Agents SDK, LangGraph, Mastra, Pydantic AI MCP server for Claude Code, Claude Projects and Codex Works with any model via bring-your-own-key TypeScript and Python clients for HTTP API access
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	Bounded prompt under a fixed cap while history grows, so costs per call stop climbing on long sessions Every run recorded with cryptographic proof: rebuilable prompts, hash-chained journal, re-runnable engine Resumes from crash without repeating finished actions using stable idempotency keys Budget enforcement before each model call, not reactive overage billing No model key storage or logging; your provider bills you directly
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)	Not checked yet −1 (down) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	3	0
Citation Flow (Majestic)	19	9
Referring domains (Majestic)	14	4

5 details filled in for both companies.

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