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Apertus V1.1 1.5B Instruct by swiss-ai

By swiss-ai · 967 downloads
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Apertus V1.1 1.5B Instruct is an open-source language model by swiss-ai. Features: 1.5b LLM, VRAM: 3GB, Context: 4K, License: apache-2.0, Instruction-Based, LLM Explorer Score: 0.26.

  Arxiv:2509.14233   Arxiv:2605.29128   Apertus Base model:finetune:swiss-ai/a... Base model:swiss-ai/apertus-v1...   Compliant   Conversational   Endpoints compatible   Instruct   Multilingual   Region:us   Safetensors   Swiss-ai
Model Card on HF 🤗: https://huggingface.co/swiss-ai/Apertus-v1.1-1.5B-Instruct 

Apertus V1.1 1.5B Instruct Parameters and Internals

LLM NameApertus V1.1 1.5B Instruct
Repository 🤗https://huggingface.co/swiss-ai/Apertus-v1.1-1.5B-Instruct 
Base Model(s)  swiss-ai/Apertus-v1.1-1.5B   swiss-ai/Apertus-v1.1-1.5B
Model Size1.5b
Required VRAM3 GB
Updated2026-08-08
Maintainerswiss-ai
Model Typeapertus
Instruction-BasedYes
Model Files  3.0 GB
Model ArchitectureApertusForCausalLM
Licenseapache-2.0
Context Length4096
Model Max Length4096
Transformers Version4.57.6
Tokenizer ClassPreTrainedTokenizerFast
Padding Token<pad>
Vocabulary Size131072

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