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Apertus

docs/source/en/model_doc/apertus.md

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This model was released on 2025-09-02 and added to Hugging Face Transformers on 2025-08-28.

Apertus

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Overview

Apertus is a family of large language models from the Swiss AI Initiative.

[!TIP] Coming soon

The example below demonstrates how to generate text with [Pipeline] or the [AutoModel], and from the command line.

<hfoptions id="usage"> <hfoption id="Pipeline">
python
from transformers import pipeline


pipeline = pipeline(
    task="text-generation",
    model="swiss-ai/Apertus-8B",
    device=0
)
pipeline("Plants create energy through a process known as")
</hfoption> <hfoption id="AutoModel">
python
from transformers import AutoModelForCausalLM, AutoTokenizer


tokenizer = AutoTokenizer.from_pretrained(
    "swiss-ai/Apertus-8B",
)
model = AutoModelForCausalLM.from_pretrained(
    "swiss-ai/Apertus-8B",
    device_map="auto",
    attn_implementation="sdpa"
)
input_ids = tokenizer("Plants create energy through a process known as", return_tensors="pt").to(model.device)

output = model.generate(**input_ids)
print(tokenizer.decode(output[0], skip_special_tokens=True))
</hfoption> </hfoptions>

ApertusConfig

[[autodoc]] ApertusConfig

ApertusModel

[[autodoc]] ApertusModel - forward

ApertusForCausalLM

[[autodoc]] ApertusForCausalLM - forward

ApertusForTokenClassification

[[autodoc]] ApertusForTokenClassification - forward