Next Brain

Next Brain is an open-source engine for neural simulation and native training across distributed systems.

Brian2 Atlas is an open-source engine for neural simulation and native training that connects neural equations to distributed execution. It retains the upstream Brian2 modelling frontend while adding its own execution backends and intermediate representation. Users define neurons, synapses, clocks and monitors, then execute supported models on Apple or NVIDIA GPUs, local CPUs, browser workers, or across multiple nodes using MPI. The engine supports typed state, schedules, effects, event identities, and forward and reverse execution plans with surrogate spike gradients. It is built for researchers studying neural simulation and network training.

Next Brain at a glance

Best for: Researcher, Software engineer
Runs on: Web, API, self-hosted, open source
Pricing: Free
Released: October 2026
Category: AI research tool
Website: next-brain.ai

Key features

Retains the upstream Brian2 modelling frontend
Connects equations to schedules and state storage via AtlasIR
Executes models on Apple and NVIDIA GPUs
Exports model bundles for execution in browser workers
Partitions networks across nodes using MPI
Provides forward and reverse training plans with spike gradients

Use it for

Simulate neural populations and spiking networks
Run native training for spiking neural networks
Partition large neural networks across multiple nodes
Export model bundles for browser execution

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