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metadata
datasets:
  - HuggingFaceH4/ultrachat_200k
  - allenai/ultrafeedback_binarized_cleaned
  - meta-math/MetaMathQA
  - WizardLM/WizardLM_evol_instruct_V2_196k
  - openchat/openchat_sharegpt4_dataset
  - LDJnr/Capybara
  - Intel/orca_dpo_pairs
language:
  - en
tags:
  - causal-lm
extra_gated_fields:
  Name: text
  Email: text
  Country: text
  Organization or Affiliation: text
  I ALLOW Stability AI to email me about new model releases: checkbox
license: other

StableLM 2 Zephyr 1.6B

Model Description

StableLM 2 Zephyr 1.6B is a 1.6 billion parameter instruction tuned inspired by Stablelm Zephyr 3B training pipeline this model was trained on a mix of publicly available datasets, synthetic datasets using Direct Preference Optimization (DPO), evaluation for this model based on MT Bench.

Usage

StableLM 2 Zephyr 1.6B uses the following instruction format:

<|user|>
List 3 synonyms for the word "tiny"<|endoftext|>
<|assistant|>
1. Dwarf
2. Little
3. Petite<|endoftext|>

This format is also available through the tokenizer's apply_chat_template method:

from transformers import AutoModelForCausalLM, AutoTokenizer

tokenizer = AutoTokenizer.from_pretrained('stabilityai/stablelm-zephyr-3b')
model = AutoModelForCausalLM.from_pretrained(
    'stabilityai/stablelm-2-zephyr-1_6b',
    trust_remote_code=True,
    device_map="auto"
)

prompt = [{'role': 'user', 'content': 'List 3 synonyms for the word "tiny"'}]
inputs = tokenizer.apply_chat_template(
    prompt,
    add_generation_prompt=True,
    return_tensors='pt'
)

tokens = model.generate(
    inputs.to(model.device),
    max_new_tokens=1024,
    temperature=0.8,
    do_sample=True
)

print(tokenizer.decode(tokens[0], skip_special_tokens=False))

You can also see how to run a performance optimized version of this model here using OpenVINO from Intel.

Model Details

Training Dataset

The dataset is comprised of a mixture of open datasets large-scale datasets available on the HuggingFace Hub:

  1. SFT Datasets
  • HuggingFaceH4/ultrachat_200k
  • meta-math/MetaMathQA
  • WizardLM/WizardLM_evol_instruct_V2_196k
  • Open-Orca/SlimOrca
  • openchat/openchat_sharegpt4_dataset
  • LDJnr/Capybara
  1. Preference Datasets:
  • allenai/ultrafeedback_binarized_cleaned
  • Intel/orca_dpo_pairs

Performance

MT-Bench

Model Size MT-Bench
Mistral-7B-Instruct-v0.2 7B 7.61
Llama2-Chat 70B 6.86
MPT-30B-Chat 30B 6.39
stablelm-zephyr-3b 3B 6.64
stablelm-2-zephyr-1.6b 1.6B 5.42
Falcon-40B-Instruct 40B 5.17
Qwen-1.8B-Chat 1.8B 4.95
dolphin-2.6-phi-2 2.7B 4.93
phi-2 2.7B 4.29
TinyLlama-1.1B-Chat-v1.0 1.1B 3.46

OpenLLM Leaderboard

Model Size Average ARC Challenge (acc_norm) HellaSwag (acc_norm) MMLU (acc_norm) TruthfulQA (mc2) Winogrande (acc) Gsm8k (acc)
microsoft/phi-2 2.7B 61.32% 61.09% 75.11% 58.11% 44.47% 74.35% 54.81%
stabilityai/stablelm-2-zephyr-1_6b 1.6B 49.73% 43.34% 69.30% 41.79% 45.55% 63.61% 34.80%
microsoft/phi-1_5 1.3B 47.69% 52.90% 63.79% 43.89% 40.89% 72.22% 12.43%
stabilityai/stablelm-2-1_6b 1.6B 45.54% 43.43% 70.49% 38.93% 36.65% 65.90% 17.82%
mosaicml/mpt-7b 7B 44.28% 47.70% 77.57% 30.80% 33.40% 72.14% 4.02%
KnutJaegersberg/Qwen-1_8B-Llamaified* 1.8B 44.75% 37.71% 58.87% 46.37% 39.41% 61.72% 24.41%
openlm-research/open_llama_3b_v2 3B 40.28% 40.27% 71.60% 27.12% 34.78% 67.01% 0.91%
iiuae/falcon-rw-1b 1B 37.07% 35.07% 63.56% 25.28% 35.96% 62.04% 0.53%
TinyLlama/TinyLlama-1.1B-3T 1.1B 36.40% 33.79% 60.31% 26.04% 37.32% 59.51% 1.44%

Training Infrastructure

  • Hardware: StableLM 2 Zephyr 1.6B was trained on the Stability AI cluster across 8 nodes with 8 A100 80GBs GPUs for each nodes.
  • Code Base: We use our internal script for SFT steps and used HuggingFace Alignment Handbook script for DPO training.

Commitment to Ethical AI

In line with our responsibility towards ethical AI development, StableLM Zephyr 3B is released with a focus on ensuring safety, reliability, and appropriateness in its applications. To this end, we have evaluated StableLM Zephyr 3B on 488 malicious prompts and used standard protocols to assess the harmfulness of its outputs. Compared to Zephyr-7b-β, StableLM Zephyr 3B reduces the number of harmful outputs as assessed by GPT-4 by 55. Additionally, we performed an internal red teaming event targeting the following abuse areas:

  • Self-Harm Methods: (Suicide Methods, Encouragement of Self-Harm, Methods and encouragement of Eating Disorders)
  • Misinformation: (Health, Conspiracy Theories, Social Unrest/Conflict, Political Misinformation, & Climate change)
  • Hate Speech: (Race, Stereotypes, Immigrants, Gender, Personally Identifiable Information such as Social security numbers, Full names, ID numbers, Email addresses, and telephone numbers)

We have incorporated the findings of our malicious prompts evaluation and red teaming event into our release. Users are encouraged to fine-tune and evaluate the model to suit their specific needs, considering the potential biases and limitations found in StableLM Zephyr 3B and inherent in other LLM models.

Use and Limitations

Intended Use

The model is intended to be used as a foundational base model for application-specific fine-tuning. Developers must evaluate and fine-tune the model for safe performance in downstream applications.

Limitations and Bias

​ This model is not trained against adversarial inputs. We strongly recommend pairing this model with an input and output classifier to prevent harmful responses.

Through our internal red teaming, we discovered that while the model will not output harmful information if not prompted to do so, it is willing to output potentially harmful outputs or misinformation when the user requests it. Using this model will require guardrails around your inputs and outputs to ensure that any outputs returned are not misinformation or harmful. Additionally, as each use case is unique, we recommend running your own suite of tests to ensure proper performance of this model. Finally, do not use the models if they are unsuitable for your application, or for any applications that may cause deliberate or unintentional harm to others.

How to Cite 

@misc{StableLM-2-1.6B,
      url={[https://huggingface.co/stabilityai/stablelm-2-1.6b](https://huggingface.co/stabilityai/stablelm-2-1.6b)},
      title={Stable LM 2 1.6B},
      author={Stability AI Language Team}
}