LLM
Apertus 70B Instruct (Apertus-70B-Instruct-2509)
Instruction-tuned 70B Apertus model from the Swiss AI Initiative, built for massively multilingual text generation with open weights.
Levelmodel
ClassLLM
Parameters70B
Context65,536
Released2 Sep 2025
Opennessopen weights permissive
Runs onnot in the notes
Statusactive
Lineage
instruct of
Apertus-70B-2509 is the parent (instruct of)high confidencemodel cardWhere this comes from
Parent and child relations from model cards, Hugging Face base_model fields and the genealogy tables of the research notes. The tree shows two generations each way, 2 models. Confidence and evidence are the notes' own.
R&D Topics
Identity
- Developer
- Swiss AI (EPFL, ETH Zurich, CSCS)
- Family
- Apertus
- Released
- 2 Sep 2025 sourcessecondary report
- 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
- dense transformer Decoder-only transformer with xIELU activation, trained with the AdEMAMix optimizer
- Total parameters
- 70B sources
- Active parameters
- –
- Checkpoint parameters
- –
- Note
- Card says 70B; safetensors metadata lists 71B
- Context length
- 65,536 tokens
- Input
- text
- Output
- text
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
- open weights permissive
- Licence
- Apache License 2.0 sources
- Access routes
- open weights download
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
- Card states 1811 natively supported languages; Indonesian not named
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.
Industry Use Cases
No industry use case links this model.
Links
ModelApertus 70B Instruct (Apertus-70B-Instruct-2509)Swiss AI (EPFL, ETH Zurich, CSCS), LLM
Apertus 70B Instruct (Apertus-70B-Instruct-2509)Swiss AI (EPFL, ETH Zurich, CSCS), LLMR&D TopicsOpen-Weight Frontier Releases as Research SubstrateRegional or National Foundation Model Training (Continued Pretraining at 7B to 70B)
Use CasesIndonesian and Regional-Language LLMsPublic SectorBanking Customer Service AssistantsFinanceCitizen Service AssistantsPublic SectorClinical LLM (Open Weights)Healthcare+3 moreUse cases of models in the same R&D topic; none is recorded for this model itself.
Who Runs It
PT Amman Mineral Nusa Tenggara (AMMAN)In production, 8 Jul 2026
PT PegadaianIn production, 5 Jun 2026
Bank Central Asia (BCA)In production, 16 Mar 2026Bank Central Asia (BCA)In production, 16 Mar 2026+14 moreDeployments of these use cases; none names this model.
PT Amman Mineral Nusa Tenggara (AMMAN)In production, 8 Jul 2026PT PegadaianIn production, 5 Jun 2026Bank Central Asia (BCA)In production, 16 Mar 2026Bank Central Asia (BCA)In production, 16 Mar 2026+14 moreDeployments of these use cases; none names this model.Models 2
R&D topics 2
Open-Weight Frontier Releases as Research SubstrateUsing released weights as the base for downstream research.used byRegional or National Foundation Model Training (Continued Pretraining at 7B to 70B)Pretraining or continued pretraining a mid-size model to serve a national or regional lan…produced by
Sources
- huggingface.co/swiss-ai/Apertus-70B-Instruct-2509 https://huggingface.co/swiss-ai/Apertus-70B-Instruct-2509
- artificialanalysis.ai/models/apertus-70b-instruct https://artificialanalysis.ai/models/apertus-70b-instruct
To cite this page: Project AURION, AI Use-Cases Research & Innovation, "Apertus 70B Instruct (Apertus-70B-Instruct-2509)", https://aurion.semai.id/models/swiss-ai-apertus-70b-instruct-2509/, records of October 2026.