KyutaiHelium

Sequential Helium 6B

This Helium 6B research family compares training on text in date order with training on shuffled data. It studies how a model retains changing facts and associates answers with the correct time period.

Research release

The repository includes temporal comparisons

The sequential checkpoints cover stages from 2020 to 2024 before the main release. Three shuffled controls use token budgets matched to selected sequential stages. The names refer to training conditions, not live knowledge updates. None of these base models is instruction tuned.Sequential_Helium_6B: Kyutai model card

Specifications & access

Sequential Helium 6B specifications
DetailValue and conditions
StatusResearch release
AccessDownloadable
Model identifierskyutai/Sequential_Helium_6Bsequential_2020sequential_2021sequential_2022sequential_2023sequential_2024shuffle_eq2020shuffle_eq2024shuffle_eq2025
LicenseCC BY-SA 4.0.Sequential_Helium_6B: Kyutai model card
Main checkpoint2.5 trillion training tokens; source dates from 2018 to the 2025 cutoff.Sequential_Helium_6B: Kyutai model card

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