Pythia 1.4B

Pythia 1.4B is a base language model in a suite designed for controlled training research. This record describes the current standard-Pile weights.

Research release

Architecture and scale

Pythia 1.4B has 24 layers, a hidden width of 2,048 and 16 attention heads. Its non-embedding network contains about 1.21 billion parameters. Compared with Pythia 1B, both the depth and attention-head arrangement change.pythia-1.4b model cardpythia-1.4b model configuration

Weights and training revisions

The release includes 154 saved training steps. The data order is shared with other sizes in the same suite. The main branch provides the final model; a step revision selects an earlier checkpoint. This base model has not been trained as a conversational assistant.pythia-1.4b model card

Specifications & access

Pythia 1.4B specifications
DetailValue and conditions
StatusResearch release
Launch date
AccessDownloadable
Model identifiersEleutherAI/pythia-1.4b
Context window2,048 tokens

Maximum position count in the released model configuration.

pythia-1.4b model configuration
Nominal parameters1.4B including embeddingspythia-1.4b model card
Network24 layers; hidden width 2,048; 16 attention headspythia-1.4b model configuration
Training dataStandard Pilepythia-1.4b model card
LicenseApache 2.0pythia-1.4b model card

Related models

  • A 1.4B Pythia checkpoint trained on deduplicated Pile text.

    Launch date Research releaseDownloadable