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Maintainer: daanelson

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Last updated 5/15/2024
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Model overview

flan-t5-large is a language model developed by Google that can be used for a variety of natural language processing tasks such as classification, summarization, and more. It is part of the FLAN-T5 family of models, which are fine-tuned versions of the original T5 model for improved performance on a wide range of tasks and languages.

The flan-t5-large model is larger than the base T5 model, with more parameters, allowing it to tackle more complex language challenges. It has been fine-tuned on over 1,000 additional tasks compared to the original T5, covering a diverse set of languages including English, Spanish, Japanese, Hindi, French, and many others. This increased task coverage and language support makes flan-t5-large a powerful and versatile model.

The model is based on the Transformer architecture and can be used for both generation and classification tasks. It is publicly available through the Hugging Face Transformers library, allowing easy integration into a variety of projects and applications.

Model inputs and outputs


  • prompt: The text prompt that the model will use to generate output.
  • max_length: The maximum number of tokens to generate in the output.
  • temperature: A value between 0 and 5 that controls the randomness of the output. Higher values result in more diverse but less coherent text.
  • top_p: The percentage of the most likely tokens to consider during generation. Lower values ignore less likely tokens.
  • repetition_penalty: A value greater than 1 that discourages the model from repeating words, while a value less than 1 encourages repetition.
  • debug: A boolean flag to enable additional debugging output.


  • Output: An array of strings representing the generated text output from the model.


The flan-t5-large model is capable of tackling a wide range of natural language processing tasks, including text classification, summarization, translation, and question answering. Its strong few-shot performance even compared to much larger models makes it a powerful and versatile tool for researchers and developers.

What can I use it for?

The broad capabilities of flan-t5-large make it suitable for a variety of applications, such as:

  • Content generation: Generating human-like text for chatbots, creative writing, or other applications that require natural language output.
  • Text summarization: Condensing long passages of text into concise summaries.
  • Language translation: Translating text between the 50+ supported languages.
  • Question answering: Answering questions by extracting relevant information from given context.
  • Text classification: Categorizing text into different topics or sentiment.

Additionally, the model can be further fine-tuned on domain-specific datasets to adapt it for more specialized use cases.

Things to try

With the flexibility and broad capabilities of flan-t5-large, there are many interesting experiments and projects one could explore. Some ideas include:

  • Zero-shot and few-shot learning: Leveraging the model's strong few-shot performance to tackle new tasks with limited training data.
  • Multilingual applications: Utilizing the model's support for over 50 languages to build cross-lingual applications.
  • Bias and fairness analysis: Studying the model's potential biases and exploring ways to improve its fairness and safety.
  • Novel task generation: Developing new benchmarks and tasks to push the boundaries of language model capabilities.

The possibilities are vast, and the flan-t5-large model provides a powerful foundation for a wide range of natural language processing research and applications.

This summary was produced with help from an AI and may contain inaccuracies - check out the links to read the original source documents!

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