System Requirements

Last updated September 26, 2026

Only two features use the local AI model, so there are two sets of requirements. Running everything takes about 16 GB of RAM on an Apple Silicon Mac, or 16 GB of RAM plus a graphics card with 8 GB or more of video memory on a PC. With the local model turned off, 8 GB of RAM and a 4-core processor cover everything else.

Processor and graphics: Everything Apple Silicon (M1 or later), or a 64-bit PC with an NVIDIA graphics card with 8 GB or more of video memory. It also runs on the processor alone, but AI analysis is several times slower.; Most features Any 64-bit, 4-core processor from the last 6 to 8 years. No graphics card needed.
Memory (RAM): Everything 16 GB minimum. 24 to 32 GB is comfortable.; Most features 8 GB minimum. 16 GB is comfortable.
Free disk space: Everything About 20 GB, plus about 50 MB per saved property.; Most features About 5 GB, plus about 50 MB per saved property.
Operating system: Everything macOS 12 (Monterey) or later on Apple Silicon or Intel; Windows 10 64-bit or later (Windows 11 on ARM); or Linux with glibc 2.28 or newer (Ubuntu 20.04, Debian 10, Fedora 36, RHEL 8); Most features Same
Required software: Everything Google Chrome and Ollama. Tesseract only if you want OCR for scanned documents.; Most features Google Chrome. Tesseract only if you want OCR for scanned documents.
Internet: Everything Broadband. The first AI model download is about 10 GB.; Most features Broadband, for pulling listings and city records

Requirement	Everything Including the local AI model	Most features Local AI model turned off
Processor and graphics	Apple Silicon (M1 or later), or a 64-bit PC with an NVIDIA graphics card with 8 GB or more of video memory. It also runs on the processor alone, but AI analysis is several times slower.	Any 64-bit, 4-core processor from the last 6 to 8 years. No graphics card needed.
Memory (RAM)	16 GB minimum. 24 to 32 GB is comfortable.	8 GB minimum. 16 GB is comfortable.
Free disk space	About 20 GB, plus about 50 MB per saved property.	About 5 GB, plus about 50 MB per saved property.
Operating system	macOS 12 (Monterey) or later on Apple Silicon or Intel; Windows 10 64-bit or later (Windows 11 on ARM); or Linux with glibc 2.28 or newer (Ubuntu 20.04, Debian 10, Fedora 36, RHEL 8)	Same
Required software	Google Chrome and Ollama. Tesseract only if you want OCR for scanned documents.	Google Chrome. Tesseract only if you want OCR for scanned documents.
Internet	Broadband. The first AI model download is about 10 GB.	Broadband, for pulling listings and city records

What needs the local AI model

Only two features use it. They run through Ollama on your own computer.

Comp analysis: On the Comps tab. Reads each listing for condition, parking, remodel year, and other details the value grid uses. Takes about 15 to 20 seconds per home.
Parcel number lookup from disclosures: Used as a fallback when the city records search can’t match the address.

What works without it

Everything else. Listing and photo saving, listing status checks, city permits and complaints, seller disclosures, OCR, maps and site constraints, floor plans, terrain, rental comps, saved searches, semantic search, Ask AcrossTown, and exporting property bundles all run with the local model turned off.

Why the memory numbers are what they are

The app itself: The desktop app, the Chrome window it uses to collect listings, and its background jobs use about 2 to 3 GB of memory while working. Floor plan and OCR processing add a little on top.
Semantic search: Uses a small 23 MB model that runs on the processor, so it fits easily on an 8 GB computer.
The local AI model: The default model (Gemma 4 E4B, with an 8K context window) is about a 10 GB download and uses roughly 8 to 10 GB of memory while loaded. That’s why 16 GB is the minimum. On an 8 GB computer you’d need a smaller model, and results would likely be less accurate.

Why the disk numbers are what they are

The app, which includes everything it needs except Chrome, takes about 1.1 GB, Chrome about 0.5 to 1 GB, and the AI model about 10 GB. Each saved property, with its photos, documents, and reports, takes about 50 MB.

A note on these numbers

These figures are estimates, not benchmarks. If your computer is close to the minimum, try the app with the local model turned off first. Questions about your setup? Email hello@acrosstown.ai.