LLMfamily
Apertus
Apertus is the Swiss AI Initiative family of fully multilingual open language models.
Levelfamily
ClassLLM
Parametersnot in the notes
Contextnot in the notes
Releasednot in the notes
Opennessunknown
Runs onnot in the notes
Statusnot in the notes
Lineage
2 members have no release date in the notes, so they are not on this timeline.
Apertus 70B Instruct (Apertus-70B-Instruct-2509) belongs to this familyLLM2 Sep 202570BApertus 8B Instruct (Apertus-8B-Instruct-2509) belongs to this familyLLM2 Sep 20258BApertus-70B-2509 belongs to this familyLLMApertus-8B-2509 belongs to this familyLLMWhere this comes from
Parent and child relations from model cards, Hugging Face base_model fields and the genealogy tables of the research notes. Confidence and evidence are the notes' own.
Identity
- Developer
- Swiss AI (EPFL, ETH Zurich, CSCS)
- Family
- not in the notes
- Released
- – sources
- Weights published
- –
- Record checked
- 11 Oct 2026
Where this comes from
Developer and dates from the research notes. Release date is the vendor's public announcement; weights date is when open weights were published.
Architecture and Size
- Architecture
- not in the notes
- Total parameters
- – sources
- Active parameters
- –
- Checkpoint parameters
- –
- Context length
- not in the notes
- Input
- not in the notes
- Output
- not in the notes
Where this comes from
Parameter counts as the developer states them. Where the checkpoint holds a different total, both are shown (register A16).
Openness and Access
- Openness
- unknown
- Licence
- not in the notes sources
- Access routes
- not in the notes
Where this comes from
The licence file governs over registry tags and aggregator labels.
Deployment
- Runs on
- not in the notes
- Footprint
- not in the notes
- Runtimes
- not in the notes
Where this comes from
Deployment tiers and runtimes as named in the notes. Footprint is the notes' figure, not a measurement by AURION.
Indonesia
- Indonesian support
- not stated
- Regional languages
- not in the notes
- Jakarta hosting
- unknown
- Languages
- not in the notes
Where this comes from
Indonesia fields are carried on every model; unknown is an allowed value.
Benchmark Results
The notes record no benchmark result for this model.
R&D Topics
No R&D topic links this model.
Industry Use Cases
No industry use case links this model.
Links
ModelApertusSwiss AI (EPFL, ETH Zurich, CSCS), LLM
ApertusSwiss AI (EPFL, ETH Zurich, CSCS), LLMR&D Topicsnone recorded
Use Casesnone recorded
Who Runs Itnone recorded
Models 4
Apertus 70B Instruct (Apertus-70B-Instruct-2509)Swiss AI (EPFL, ETH Zurich, CSCS), LLMFamilyApertus 8B Instruct (Apertus-8B-Instruct-2509)Swiss AI (EPFL, ETH Zurich, CSCS), LLMFamilyApertus-70B-2509Swiss AI (EPFL, ETH Zurich, CSCS), LLMFamilyApertus-8B-2509Swiss AI (EPFL, ETH Zurich, CSCS), LLMFamilySources
- huggingface.co/swiss-ai/Apertus-70B-Instruct-2509 https://huggingface.co/swiss-ai/Apertus-70B-Instruct-2509
To cite this page: Project AURION, AI Use-Cases Research & Innovation, "Apertus", https://aurion.semai.id/models/swiss-ai-apertus/, records of October 2026.