Barcelona Supercomputing Center

weights

open(Apache-2.0, safetensors on HF BSC-LT/ALIA-40b)

data

documented-not-released(60+ named sources described in the model card, but the pretraining corpus "will not be released or distributed to third parties")

code

open(all training scripts + configuration files at github.com/langtech-bsc/alia)

checkpoints

not-released

license

Apache-2.0(OSI)

Strong open-weights release that stops one notch short of full openness: permissive Apache-2.0 weights plus the complete training code/recipe published on GitHub, but the pretraining corpus is only documented (60+ named sources) rather than released or reconstructable. That missing open-data component is the bright line that keeps it at open_weights (4) rather than the OLMo/Pythia/Apertus open_source (5) tier, where Apertus reaches 5 by shipping data-reconstruction scripts. No intermediate checkpoints.

• https://huggingface.co/BSC-LT/ALIA-40b recorded 2026-06-26

  Apache-2.0 license; downloadable safetensors weights; 40.4B params; 9.37T training tokens; corpus documented across 60+ sources but "will not be released or distributed"; links training code at github.com/langtech-bsc/alia

• https://github.com/langtech-bsc/alia recorded 2026-06-26

  open training scripts and configuration files for the ALIA models