Model reference · open weights

stablelm-alpha

LLMs stabilityai Text gen 1 build Open weights 3k dl/mo

stablelm-alpha is an open-weight language model from Stability AI. stablelm-base-alpha-3b (BF16) weighs 14.8 GB; the smallest configuration that runs it is 2× RTX 3060 12 GB.

  • StableLM-Base-Alpha is a decoder-only language model developed by Stability AI for text generation.
  • The 3B parameter version uses the NeoX transformer architecture and supports a sequence length of 4096 tokens.
  • It is trained on English and code datasets and is released under the CC BY-SA-4.0 license.

Summary of the stabilityai/stablelm-base-alpha-3b model card, 2026-10-01

What it is

Released byStability AI
Released2023-04-17
VRAM14.8 GB for the weights

What it runs on

Memory and cards for stablelm-base-alpha-3b (BF16)

14.8 GBweights, file size
262 MBcache per 1K tokens
683 MBruntime overhead, at least
4,096 tokenscontext max
CardRequests at onceContext maxMemory
4K each
RTX 3060 12 GB … RTX 4060 Ti 16 GB
2 smaller cards
——
RTX 3090 24 GB7all 4K23.4 GB
RTX 4090 24 GB7all 4K23.4 GB
RTX 5090 32 GB14all 4K31.0 GB
L40S 48 GB26all 4K44.0 GB
A100 80 GB58all 4K78.2 GB
H100 80 GB55all 4K78.1 GB
RTX PRO 6000 Blackwell 96 GB69all 4K93.8 GB
DGX Spark (GB10) 128 GB unified82all 4K107 GB
H200 141 GB110all 4K138 GB
B200 180 GB145all 4K176 GB
2× RTX 3060 12 GB
tensor parallel
6all 4K11.6 GB a card
2× RTX 4060 Ti 16 GB
tensor parallel
13all 4K15.4 GB a card
2× RTX 4090 24 GB
tensor parallel
28all 4K23.4 GB a card
2× RTX 3090 24 GB
tensor parallel
28all 4K23.4 GB a card
Memory needed at each load
Requests at once4K tokens each
116.6 GB
520.9 GB
824.1 GB
1632.7 GB
3249.9 GB
6484.2 GB

One card, with vLLM's small-card settings.

From the model card

What Stability AI says about stablelm-alpha

Read the model card

📢 DISCLAIMER: The StableLM-Base-Alpha models have been superseded. Find the latest versions in the Stable LM Collection here.

Model Description

StableLM-Base-Alpha is a suite of 3B and 7B parameter decoder-only language models pre-trained on a diverse collection of English and Code datasets with a sequence length of 4096 to push beyond the context window limitations of existing open-source language models.

Usage

Get started generating text with StableLM-Base-Alpha by using the following code snippet:

from transformers import AutoModelForCausalLM, AutoTokenizer

tokenizer = AutoTokenizer.from_pretrained("StabilityAI/stablelm-base-alpha-3b")
model = AutoModelForCausalLM.from_pretrained("StabilityAI/stablelm-base-alpha-3b")
model.half().cuda()

inputs = tokenizer("What's your mood today?", return_tensors="pt").to("cuda")
tokens = model.generate(
  **inputs,
  max_new_tokens=64,
  temperature=0.7,
  do_sample=True,
)
print(tokenizer.decode(tokens[0], skip_special_tokens=True))

Model Details

  • Developed by: Stability AI

  • Model type: StableLM-Base-Alpha models are auto-regressive language models based on the NeoX transformer architecture.

  • Language(s): English

  • Library: GPT-NeoX

  • License: Base model checkpoints (StableLM-Base-Alpha) are licensed under the Creative Commons license (CC BY-SA-4.0). Under the license, you must give credit to Stability AI, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the Stability AI endorses you or your use.

  • Contact: For questions and comments about the model, please email lm@stability.ai

Training

ParametersHidden SizeLayersHeadsSequence Length
3B409616324096
7B614416484096

Training Dataset

StableLM-Base-Alpha is pre-trained on a new experimental dataset built atop The Pile and is threes times larger at approximately 1.5T tokens.

Training Procedure

Models are pre-trained on the aforementioned dataset in mixed-precision (FP16), optimized with Adam, and trained using the NeoX tokenizer with a vocabulary size of 50,257. We outline the complete hyperparameters choices in the project's GitHub repository.

Use and Limitations

Intended Use

These models are intended to be used by all individuals as foundational models for application-specific fine-tuning without strict limitations on commercial use.

Limitations and bias

The pre-training dataset may contain offensive or inappropriate content even after applying data cleansing filters which can be reflected in generated text. We recommend users exercise reasonable caution when using these models in production systems. Do not use the models for any applications that may cause harm or distress to individuals or groups.

Citations

@software{gpt-neox-library,
  title = {{GPT-NeoX: Large Scale Autoregressive Language Modeling in PyTorch}},
  author = {Andonian, Alex and Anthony, Quentin and Biderman, Stella and Black, Sid and Gali, Preetham and Gao, Leo and Hallahan, Eric and Levy-Kramer, Josh and Leahy, Connor and Nestler, Lucas and Parker, Kip and Pieler, Michael and Purohit, Shivanshu and Songz, Tri and Phil, Wang and Weinbach, Samuel},
  url = {https://www.github.com/eleutherai/gpt-neox},
  doi = {10.5281/zenodo.5879544},
  month = {8},
  year = {2021},
  version = {0.0.1},
}

Quoted from the model card on Hugging Face. The full card is behind the Hugging Face link above.

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