Apertus
@apertusllm.bsky.social
Developed by the Swiss AI Initiative as a collaborative effort between EPFL, ETH Zurich, and CSCS. Open weights, open data, open science.
Available now! Apertus 1.5 — 8B & 70B models with multimodal text/image/audio input, a 4x longer context window, optional thinking mode, and improved tool use, all built transparently and responsibly. 3.2M+ downloads 🚀 #Apertus #OpenSourceLLM Details+Links+Open roles: apertus-ai.org/articles/202...
Three new model weights: 0.5B, 1.5B, 4B are available using new quantization and distillation techniques. Download #Apertus 1.1, read the ICML workshop report, try a new demo on @hf.co - all just a tap away in our latest blog post: apertus-ai.org/articles/202...
APERTVS.ai
Fully Open Foundation Model for Sovereign AI
apertus-ai.org
Apertus Mini is now running entirely in your browser 🇨🇭 80+ tps for the 1.5B, 60+ tps for the 4B (on my M3). Fully client-side via Transformers.js + ONNX + WebGPU.
Congratulations to each of the 102 authors of the #Apertus v1 report, officially published today ahead of the presentation at #ACL2026NLP in July. Follow @aclmeeting.bsky.social for updates aclanthology.org/2026.acl-lon...
Apertus: Democratizing Open and Compliant LLMs for Global Language Environments
Alejandro Hernández-Cano, Alexander Hägele, Allen Hao Huang, Angelika Romanou, Antoni-Joan Solergibert, Barna Pásztor, Bettina Messmer, Dhia Garbaya, Eduard Frank Ďurech, Ido Hakimi, Juan Garcia Giral...
aclanthology.org