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Pythia 1B V0 by EleutherAI

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Pythia 1B V0 is an open-source language model by EleutherAI. Features: 1b LLM, VRAM: 2.1GB, Context: 2K, License: apache-2.0, LLM Explorer Score: 0.05.

  Arxiv:2101.00027   Arxiv:2201.07311   Dataset:the pile   En   Endpoints compatible   Gpt neox   Pythia   Pythia v0   Pytorch   Region:us   Safetensors
Model Card on HF 🤗: https://huggingface.co/EleutherAI/pythia-1b-v0 

Pythia 1B V0 Benchmarks

LLME Score: 0.0478
nn.n% — How the model compares to the reference models: Anthropic Sonnet 3.5 ("so35"), GPT-4o ("gpt4o") or GPT-4 ("gpt4").
Pythia 1B V0 (EleutherAI/pythia-1b-v0)
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Pythia 1B V0 Parameters and Internals

Model Type 
Transformer-based Language Model, causal-lm
Use Cases 
Areas:
research
Primary Use Cases:
Behavior analysis, functionality and limitations study of large language models
Limitations:
Not suitable for deployment, English-only, might generate undesired outputs
Considerations:
Model intended for interpretability research, not for real-world deployment interactions.
Additional Notes 
All Pythia models trained for the equivalent of 143000 steps. The model is not fine-tuned for downstream tasks like writing prose or commercial chatbot interaction.
Supported Languages 
en (proficient)
Training Details 
Data Sources:
the Pile
Data Volume:
299,892,736,000 tokens
Model Architecture:
Transformer
Input Output 
Input Format:
String input
Accepted Modalities:
text
Output Format:
Generated text tokens
Performance Tips:
Curate generated outputs before use in applications.
LLM NamePythia 1B V0
Repository 🤗https://huggingface.co/EleutherAI/pythia-1b-v0 
Model Size1b
Required VRAM2.1 GB
Updated2026-03-29
MaintainerEleutherAI
Model Typegpt_neox
Model Files  2.1 GB   2.1 GB
Supported Languagesen
Model ArchitectureGPTNeoXForCausalLM
Licenseapache-2.0
Context Length2048
Model Max Length2048
Transformers Version4.22.2
Tokenizer ClassGPTNeoXTokenizer
Vocabulary Size50304
Torch Data Typefloat16

Best Alternatives to Pythia 1B V0

Best Alternatives
Context / RAM
Downloads
Likes
C2S Scale Pythia 1B Pt8K / 0 GB14807
Pythia 2.8B Deduped Rp 710M 4K4K / 11.7 GB21
Pythia 1.4B Deduped Rp 280M 4K4K / 6.1 GB61
Pythia 1.4B Deduped Rp 420M 4K4K / 6.1 GB31
Chatml Test2K / 2.1 GB160
Pythia 1B Deduped Tldr Sft2K / 2 GB1580
Pythia 1B Kto Iter02K / 2 GB60
Pythia 1B Self Kto Iter02K / 2 GB60
...eduped Tldr Preference Sft Trl2K / 2 GB140
...rAI Pythia 1B Deduped Sft Tldr2K / 4 GB25280
Note: green Score (e.g. "73.2") means that the model is better than EleutherAI/pythia-1b-v0.

Rank the Pythia 1B V0 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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