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Llama 2 7B Chat Hf by NousResearch

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Model Card on HF 🤗: https://huggingface.co/NousResearch/Llama-2-7b-chat-hf 

Llama 2 7B Chat Hf Benchmarks

LLME Score: 0.17001
nn.n% — How the model compares to the reference models: Anthropic Sonnet 3.5 ("so35"), GPT-4o ("gpt4o") or GPT-4 ("gpt4").
Llama 2 7B Chat Hf (NousResearch/Llama-2-7b-chat-hf)
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Llama 2 7B Chat Hf Parameters and Internals

Model Type 
text generation, dialogue
Use Cases 
Areas:
Commercial use, Research use
Limitations:
Use in languages other than English, Use in violation of applicable laws or regulations
Additional Notes 
Llama 2 models use Grouped-Query Attention (GQA) for improved inference scalability.
Supported Languages 
English (proficient)
Training Details 
Data Sources:
*A new mix of publicly available online data*
Data Volume:
2 trillion tokens
Methodology:
Supervised fine-tuning (SFT) and reinforcement learning with human feedback (RLHF)
Context Length:
4000
Hardware Used:
Meta's Research Super Cluster, A100-80GB
Model Architecture:
Auto-regressive language model with transformer architecture
Responsible Ai Considerations 
Fairness:
Testing conducted to date has been in English and cannot cover all scenarios.
Transparency:
Developers should perform safety testing and tuning tailored to their specific applications.
Accountability:
Restrictions on use to prevent infringement of laws and regulations.
Mitigation Strategies:
Align to human preferences for helpfulness and safety.
Input Output 
Input Format:
Text
Accepted Modalities:
text
Output Format:
Text
Performance Tips:
To get the expected features and performance, a specific formatting needs to be followed, including `INST` and `<>` tags, `BOS` and `EOS` tokens, and whitespaces/breaklines.
LLM NameLlama 2 7B Chat Hf
Repository 🤗https://huggingface.co/NousResearch/Llama-2-7b-chat-hf 
Model Size7b
Required VRAM13.5 GB
Updated2025-07-30
MaintainerNousResearch
Model Typellama
Model Files  10.0 GB: 1-of-2   3.5 GB: 2-of-2   9.9 GB: 1-of-3   9.9 GB: 2-of-3   7.2 GB: 3-of-3
Supported Languagesen
Model ArchitectureLlamaForCausalLM
Context Length4096
Model Max Length4096
Transformers Version4.31.0.dev0
Tokenizer ClassLlamaTokenizer
Beginning of Sentence Token<s>
End of Sentence Token</s>
Unk Token<unk>
Vocabulary Size32000
Torch Data Typefloat16

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Note: green Score (e.g. "73.2") means that the model is better than NousResearch/Llama-2-7b-chat-hf.

Rank the Llama 2 7B Chat Hf Capabilities

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Instruction Following and Task Automation  
Factuality and Completeness of Knowledge  
Censorship and Alignment  
Data Analysis and Insight Generation  
Text Generation  
Text Summarization and Feature Extraction  
Code Generation  
Multi-Language Support and Translation  

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Original data from HuggingFace, OpenCompass and various public git repos.
Release v20241124
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