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gvadhul/
gpt2-2layer-1m

Name: gpt2-2layer-1m
Availability: InStock

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gpt2-2layer-1m

A randomly-initialized, 2-layer GPT-2 model for functional / integration testing. It produces incoherent text — that is by design.

Architecture

Hyperparameter	Value
Architecture	GPT-2 (decoder-only)
Layers	2
Hidden size	256
Attention heads	4
FFN inner size	1 024
Context length	512
Vocabulary size	183 (byte-level BPE)
Total params	~1.76 M
Non-embedding params	~1.58 M

Usage

python

from transformers import GPT2LMHeadModel, PreTrainedTokenizerFast

tokenizer = PreTrainedTokenizerFast.from_pretrained("gvadhul/gpt2-2layer-1m")
model     = GPT2LMHeadModel.from_pretrained("gvadhul/gpt2-2layer-1m")

inputs = tokenizer("Hello world", return_tensors="pt")
out    = model.generate(**inputs, max_new_tokens=20)
print(tokenizer.decode(out[0]))

Intended use

Functional / unit testing of pipelines that need a tiny causal LM. Not suitable for any real NLP task — weights are random.