Cortex - Local AI - Free Download

Cortex reads your images, documents, and text — entirely on your device. No cloud. No account. No data sent anywhere. After a one-time model download, it works with no internet connection at all.
Built for professionals who can't hand their confidential work to a cloud service, Cortex gives you the full power of a modern AI without the data exposure. No terms of service that claim rights to your inputs. No server logs. No risk of a breach leaking your client's name.

Key features:
- Voice mode — speak naturally, get spoken replies. Fully on-device, nothing stored
- Audio & video input — attach media files and ask questions about them
- Image & document input — analyse photos, contracts, receipts, prescriptions and more
- Fully offline after model download — works on a plane, in a courthouse, anywhere
- Zero data collection — nothing is ever transmitted or stored outside your device
- 43 supported languages — switch freely between languages in any conversation
- One-time purchase — no monthly subscription, no usage limits after going Pro
- Free tier included — 25 messages per day at no cost, upgrade whenever you're ready
- GDPR-friendly — no data transfers to US servers or third parties

Cortex runs a powerful on-device language model entirely on your hardware, giving you conversational AI that's fast and capable without any cloud dependency.

Download free and try it today. Upgrade once — use it forever.