EleutherAIHermes Mamba

Hermes Mamba 2.8B SlimPajama

This model applies OpenHermes 2.5 supervised chat training to a 2.8B Mamba base pretrained on Cerebras SlimPajama. It differs from the Pile-based Hermes Mamba release through its pretraining data.

Research release

Keep the two data stages distinct

SlimPajama describes the base pretraining corpus. OpenHermes 2.5 supplies the later chat examples. The separately published cDPO model adds preference training; those weights are not included simply by loading this supervised version.Hermes-mamba-2.8b-slimpj model cardHermes-mamba-2.8b-slimpj model configuration

Use the released chat markers

These adaptations replace the usual ChatML start and end markers with ASCII control characters 0x16 and 0x17. The card describes this choice for RWKV tokenizer compatibility. Literal ChatML tokens are not interchangeable with the published format.Hermes-mamba-2.8b-slimpj model card

Specifications & access

Hermes Mamba 2.8B SlimPajama specifications
DetailValue and conditions
StatusResearch release
AccessDownloadable
Model identifiersEleutherAI/Hermes-mamba-2.8b-slimpj
Base architectureMamba; SlimPajama-pretrained baseHermes-mamba-2.8b-slimpj model cardMamba state-space architecture and original models
Nominal parameters2.8BHermes-mamba-2.8b-slimpj model card
LicenseApache 2.0Hermes-mamba-2.8b-slimpj model card

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