Apertus 1.5 Release Notes
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Papers
Apertus 1.5: From Open Text Models to Open Multimodal Reasoners
Apertus: Democratizing Open and Compliant LLMs for Global Language Environments
Articles
8B and 70B open-data open-weights models, globally multilingual with multimodal input and reasoning support
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swiss-ai/Apertus-v1.5-8B
Image-Text-to-Text • 9B • Updated • 493k • 156 -
swiss-ai/Apertus-v1.5-70B
Image-Text-to-Text • 72B • Updated • 4.2k • • 128 -
Apertus 1.5: From Open Text Models to Open Multimodal Reasoners
Paper • 2610.15542 • Published • 52 -
swiss-ai/Apertus-v1.5-8B-base
Image-Text-to-Text • 9B • Updated • 1.74k • 4
This collection contains datasets used for the continuous pre-training and post-training (SFT, RL and Alignment) of Apertus 1.5.
Democratizing Open and Compliant LLMs for Global Language Environments: 8B and 70B open-data open-weights models, multilingual in >1000 languages
-
swiss-ai/Apertus-8B-2509
Text Generation • 8B • Updated • 42.5k • 175 -
swiss-ai/Apertus-8B-Instruct-2509
Text Generation • 8B • Updated • 432k • • 498 -
swiss-ai/Apertus-70B-2509
Text Generation • 71B • Updated • 2.88k • 160 -
swiss-ai/Apertus-70B-Instruct-2509
Text Generation • 71B • Updated • 19k • • 194
Collection of checkpoints for the HF transformers integration of the WavTokenizer as part of the Apertus1p5 integration.
Distillations and Quantizations of our models into more compact formats (<8B parameters)
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swiss-ai/Apertus-v1.1-0.5B
Text Generation • 0.4B • Updated • 5.62k • 11 -
swiss-ai/Apertus-v1.1-0.5B-Instruct
Text Generation • 0.6B • Updated • 1.19k • 1 -
swiss-ai/Apertus-v1.1-1.5B
Text Generation • 2B • Updated • 1.76k • 1 -
swiss-ai/Apertus-v1.1-1.5B-Instruct
Text Generation • 2B • Updated • 1.45k • 2
8B and 70B open-data open-weights models, globally multilingual with multimodal input and reasoning support
-
swiss-ai/Apertus-v1.5-8B
Image-Text-to-Text • 9B • Updated • 493k • 156 -
swiss-ai/Apertus-v1.5-70B
Image-Text-to-Text • 72B • Updated • 4.2k • • 128 -
Apertus 1.5: From Open Text Models to Open Multimodal Reasoners
Paper • 2610.15542 • Published • 52 -
swiss-ai/Apertus-v1.5-8B-base
Image-Text-to-Text • 9B • Updated • 1.74k • 4
Collection of checkpoints for the HF transformers integration of the WavTokenizer as part of the Apertus1p5 integration.
This collection contains datasets used for the continuous pre-training and post-training (SFT, RL and Alignment) of Apertus 1.5.
Distillations and Quantizations of our models into more compact formats (<8B parameters)
-
swiss-ai/Apertus-v1.1-0.5B
Text Generation • 0.4B • Updated • 5.62k • 11 -
swiss-ai/Apertus-v1.1-0.5B-Instruct
Text Generation • 0.6B • Updated • 1.19k • 1 -
swiss-ai/Apertus-v1.1-1.5B
Text Generation • 2B • Updated • 1.76k • 1 -
swiss-ai/Apertus-v1.1-1.5B-Instruct
Text Generation • 2B • Updated • 1.45k • 2
Democratizing Open and Compliant LLMs for Global Language Environments: 8B and 70B open-data open-weights models, multilingual in >1000 languages
-
swiss-ai/Apertus-8B-2509
Text Generation • 8B • Updated • 42.5k • 175 -
swiss-ai/Apertus-8B-Instruct-2509
Text Generation • 8B • Updated • 432k • • 498 -
swiss-ai/Apertus-70B-2509
Text Generation • 71B • Updated • 2.88k • 160 -
swiss-ai/Apertus-70B-Instruct-2509
Text Generation • 71B • Updated • 19k • • 194