Swiss AI Initiative releases 134-page Apertus 1.5 technical report on fully open multimodal reasoning
valentina__py · x · 2026-10-16
The Apertus 1.5 technical report, "From Open Text Models to Open Multimodal Reasoners," is out from the Swiss AI Initiative (ETH Zurich/EPFL).
- 134 pages documenting the development of a fully open multimodal reasoning model
- Includes the data recipe, training experiments, and many interesting insights
- A rare fully open end-to-end look at how an open model was built
A valuable reference for teams studying open model training methodology.
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