Apertus 1.5 70B
Apertus 1.5 70B is the 70B-parameter member of Apertus 1.5, the fully open multilingual model family from the Swiss AI Initiative (ETH Zurich, EPFL and CSCS), released on July 24, 2026. It was continued-pretrained from Apertus 1.0, takes image, audio and text input, generates text, and has an optional thinking mode.
Released
July 24, 2026
Type
multimodal
License
open-source
Apache 2.0
Context
262,144 tokens
Capabilities
textimagesaudioreasoningtoolsmultilingual
Architecture
Parameters: 70B
Sources
Every figure on this page was checked against these pages on . A figure we could not source is left out.
- CSCS press release: Apertus 1.5 (2026-07-24) (opens in a new tab)
- Hugging Face model card (swiss-ai org): Apertus-v1.5-70B (opens in a new tab)
- Apertus 1.5 paper (opens in a new tab)
- Swiss AI Initiative: Apertus 1.5 70B (opens in a new tab)
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