Apertus 1.5 extends our fully open models with image understanding, a thinking mode, and a four times longer context window. Visit our documentation site for details, and use the @swiss-ai organization on Hugging Face for downloading the official weights.

Community Showcase

Visit the Get Started page for a list of inference providers. Our Quickstart has technical information on downloading Apertus models to your own computer, and on how to contribute. The following is a selection of production applications with Apertus built-in:

Lumo by Proton

The zero-access encrypted AI assistant, now featuring Apertus 1.5.

Euria

Switch to Apertus 1.5 in the Euria assistant, or work directly in kSuite: Infomaniak's collaborative suite.

Helvetra

Translation service powered by Apertus. Simple, private, precise. Built in Switzerland for everyone who values their words.

AI Potluck

Alpha is a chatbot powered by Apertus that gives you XRAY vision on the inference process.

Public AI

Chat with Apertus for free. Log in for access to larger models, web search, and more.

Open Data Editor

Work with spreadsheets, explore and easily annotate FAIR data with Apertus on your desktop.

Hugging Face

Try Apertus Mini running in your browser, with a web chat based on Transformers.js and WebGPU.

ZüriCityGPT OSS

A RAG Chatbot demo developed by Liip to ask questions about city laws with the Apertus model.

Would you like to see your Apertus project here? Let us know.