Brian2 Atlas vs Levee
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 Levee
| Detail | 
Brian2 Atlas | 
Levee |
|---|
| What it does | Distributed neural simulation with MPI for Brian2 models
| Authorization layer for AI agent spend with human-approved mandates and tamper-evident proof
|
|---|
| Stage | Startup
| Startup
|
|---|
| Founded | 2026
| 2026
|
|---|
| Based in | GB
| Not given
|
|---|
| Pricing model | Open source
| Free trial
|
|---|
| Pricing | Not given
| Free 12 week pilot for card issuing platforms
|
|---|
| 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
| - Passkey-signed spend mandates with purpose, budget, merchants, and time windows
- Real-time authorization decisions with sub-1 second response time at p99
- Human challenge via passkey step-up for exceptional spend
- Fail-closed payment processing if no decision arrives in time
- Hash-chained evidence ledger with tamper-evident records
- Exportable evidence packs for chargebacks and audits
- Supports card, wallet, x402 and stablecoin payment rails
|
|---|
| 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
| - Human-approved mandates enforce intent, not just static limits or merchant category blocks
- Operates outside the agent in the issuer's authorization path, preventing agent bypass or override
- Creates tamper-evident audit trail linked to agent identity, run, and policy version
- Never holds funds or issues cards; integrates with existing issuer infrastructure
- Single mandate and policy core across multiple payment rails and issuers
|
|---|
| 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 | 0 |
|---|
| Referring domains (Majestic) | 14 | 0 |
|---|
6 details filled in for both companies.
More alternatives to Brian2 Atlas More alternatives to Levee