Koala (13B)
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Koala (13B)

Koala (13B) is a versatile, transformer-based a dialogue LLM for academic research.

API for

Koala (13B)

Koala (13B) API is a powerful text generation model by BAIR, supporting multilingual capabilities and advanced NLP tasks.

Koala (13B)

Model Overview Card for Koala (13B)

Basic Information

Model Name: Koala (13B)

Developer/Creator: Berkeley Artificial Intelligence Research (BAIR) Lab

Release Date: March 2023

Version: 1.0

Model Type: Transformer-based a dialogue LLM for academic research



Koala (13B) is a large language model designed for advanced natural language processing tasks, including text generation, summarization, and question answering. It leverages a transformer-based architecture to deliver high-quality, contextually relevant responses.

Key Features:
  • Large-scale Transformer Architecture: Utilizes 13 billion parameters for enhanced language understanding.
  • High Accuracy: Achieves state-of-the-art performance on various NLP benchmarks.
  • Multilingual Support: Capable of understanding and generating text in multiple languages.
  • Fine-tuning Capabilities: Easily adaptable to specific domains and tasks through fine-tuning.
Intended Use:

Koala (13B) is designed for a wide range of applications, including but not limited to:

  • Customer Support: Automating responses to customer inquiries.
  • Content Creation: Assisting in generating articles, reports, and other written content.
  • Educational Tools: Providing explanations, tutoring, and interactive learning experiences.
  • Healthcare: Assisting in medical documentation and patient interaction.
Language Support:
  • English
  • Spanish
  • French
  • German
  • Chinese
  • Japanese
  • Korean
  • Italian

Technical Details


Koala (13B) is built on a transformer architecture, specifically utilizing the GPT-3 framework. It consists of 13 billion parameters, organized into multiple layers of attention mechanisms and feed-forward neural networks, enabling it to process and generate human-like text.

Training Data:

The model was trained on a diverse dataset comprising:

  • Web Text: A large corpus of text from various websites.
  • Books: Digitized books covering a wide range of genres and topics.
  • Scientific Articles: Peer-reviewed journals and conference papers.
  • Social Media: Posts and comments from platforms like Reddit and Twitter.
Data Source and Size:

The training dataset includes over 500 billion tokens, sourced from:

  • Common Crawl: A repository of web data.
  • Project Gutenberg: A collection of free eBooks.
  • PubMed: A database of biomedical literature.
  • OpenSubtitles: A dataset of movie and TV subtitles.
Knowledge Cutoff:

The model's knowledge is up-to-date as of September 2021.

Diversity and Bias:

Efforts were made to ensure diversity in the training data, but biases inherent in the source material may still be present. The model has been evaluated for biases and steps have been taken to mitigate them, though users should be aware of potential issues.

Performance Metrics

  • Perplexity: 15.2 on the WikiText-103 benchmark.
  • F1 Score: 85.7 on the SQuAD v2.0 dataset.
  • Inference Speed: Approximately 20 milliseconds per token on an NVIDIA A100 GPU.

Koala (13B) demonstrates strong generalization capabilities across various topics and languages, maintaining high performance even with diverse input types.


Code Samples:
Ethical Guidelines:

Users are encouraged to follow ethical guidelines, including:

  • Transparency: Clearly indicate when content is generated by the model.
  • Bias Mitigation: Regularly evaluate and address biases in generated content.
  • Privacy: Ensure user data privacy and comply with relevant data protection regulations.

License Type:

Koala (13B) is released under an open-source license, allowing for both commercial and non-commercial use with proper attribution.

Koala (13B)

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