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This is converstion of the StableCode-Completion-Alpha-3B-4K model from StabilityAI for use with the FOSS TabbyML Development Toolset, nothing other than converstion to the CTranslate2 compatible format has been undertaken so that the model can be used by TabbyML this included the creation of the appropriate configuration for TabbyML.

Original Model Description

StableCode-Completion-Alpha-3B-4K is a 3 billion parameter decoder-only code completion model pre-trained on diverse set of programming languages that topped the stackoverflow developer survey.


The model is intended to do single/multiline code completion from a long context window upto 4k tokens. Get started generating code with StableCode-Completion-Alpha-3B-4k by using the following code snippet:

from transformers import AutoModelForCausalLM, AutoTokenizer
tokenizer = AutoTokenizer.from_pretrained("stabilityai/stablecode-completion-alpha-3b-4k")
model = AutoModelForCausalLM.from_pretrained(
inputs = tokenizer("import torch\nimport torch.nn as nn", return_tensors="pt").to("cuda")
tokens = model.generate(
print(tokenizer.decode(tokens[0], skip_special_tokens=True))

Model Details

  • Developed by: Stability AI
  • Model type: StableCode-Completion-Alpha-3B-4k models are auto-regressive language models based on the transformer decoder architecture.
  • Language(s): Code
  • Library: GPT-NeoX
  • License: Model checkpoints are licensed under the Apache 2.0 license.
  • Contact: For questions and comments about the model, please email lm@stability.ai

Model Architecture

Parameters Hidden Size Layers Heads Sequence Length
2,796,431,360 2560 32 32 4096
  • Decoder Layer: Parallel Attention and MLP residuals with a single input LayerNorm (Wang & Komatsuzaki, 2021)
  • Position Embeddings: Rotary Position Embeddings (Su et al., 2021)
  • Bias: LayerNorm bias terms only


StableCode-Completion-Alpha-3B-4k is pre-trained at a context length of 4096 for 300 billion tokens on the bigcode/starcoder-data.

Training Dataset

The first pre-training stage relies on 300B tokens sourced from various top programming languages occuring in the stackoverflow developer survey present in the starcoder-data dataset.

Training Procedure

The model is pre-trained on the dataset mixes mentioned above in mixed-precision BF16), optimized with AdamW, and trained using the StarCoder tokenizer with a vocabulary size of 49k.

Use and Limitations

Intended Use

StableCode-Completion-Alpha-3B-4K independently generates new code completions, but we recommend that you use StableCode-Completion-Alpha-3B-4K together with the tool developed by BigCode and HuggingFace (huggingface/huggingface-vscode: Code completion VSCode extension for OSS models (github.com)), to identify and, if necessary, attribute any outputs that match training code.

Limitations and bias

This model is intended to be used responsibly. It is not intended to be used to create unlawful content of any kind, to further any unlawful activity, or to engage in activities with a high risk of physical or economic harm.

How to cite

      title={Stable Code Complete Alpha}, 
      author={Adithyan, Reshinth and Phung, Duy and Cooper, Nathan and Pinnaparaju, Nikhil and Laforte, Christian}
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Model size
3.31B params
Tensor type

Dataset used to train rtlabs/StableCode-3B

Evaluation results