Stemma Machinarum

Model · pythia-70m

pythia-70m

Developer: EleutherAI
Availability: available · checked 2026-09-24 · source

Raw record: /data/models/pythia-70m.json

Fields

id
pythia-70m
identifiers
huggingface
EleutherAI/pythia-70m
developer
EleutherAI
release_date
2023-02-13partial · source
note:  HF repo creation date; may predate or postdate public release.
weights_status
open
availability
available · checked 2026-09-24 · source
license
apache-2.0partial · source
note:  From HF card metadata (uploader-declared); confirm against the license text.
architecture
family
decoder_only
note
family read from config 'architectures': ['GPTNeoXForCausalLM'].
n_layers
6recorded · source
hidden_size
512recorded · source
n_heads
8recorded · source
vocab_size
50304recorded · source
context_length
2048recorded · source
positional_encoding
rotary (RoPE), partial: 25% of dimsrecorded · source
note:  Paper sec 2.3: 'We use rotary embeddings'; fraction is config rotary_pct 0.25. Same as pythia-6-9b.
training_data
The Pile (300B tokens), or its near-deduplicated variant for the 'deduped' branch. One of 8 sizes trained on identical data in identical order (Pythia paper).recorded · source
techniques
primary_sources
https://huggingface.co/EleutherAI/pythia-70m
https://huggingface.co/EleutherAI/pythia-70m/raw/a39f36b100fe8a5377810d56c3f4789b9c53ac42/config.json
record_history
date:2026-09-24 · change:ingested as candidate from HF (EleutherAI/pythia-70m@a39f36b100fe8a5377810d56c3f4789b9c53ac42) · by:ingest_hf.py ·
date:2026-09-24 · change:preparer: developer, positional encoding set; trained_on accepted · by:claude (preparer, Sonnet 5) ·
date:2026-09-24 · change:preparer cleanup: removed 3 stale flag(s), filled training_data · by:claude (preparer, Sonnet 5) ·
date:2026-09-24 · change:reviewed and promoted from staging (1 edge(s) accepted) · by:Wilson Pruitt ·

Parents

Training data

Children

No edges recorded.

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