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# Tiktoken and interaction with Transformers

Support for tiktoken model files is seamlessly integrated in 🤗 transformers when loading models 
`from_pretrained` with a `tokenizer.model` tiktoken file on the Hub, which is automatically converted into our 
[fast tokenizer](https://huggingface.co/docs/transformers/main/en/main_classes/tokenizer#transformers.PreTrainedTokenizerFast). 

### Known models that were released with a `tiktoken.model`:
	- gpt2
	- llama3

## Example usage
 
In order to load `tiktoken` files in `transformers`, ensure that the `tokenizer.model` file is a tiktoken file and it 
will automatically be loaded when loading `from_pretrained`. Here is how one would load a tokenizer and a model, which 
 can be loaded from the exact same file:

```py
from transformers import AutoTokenizer

model_id = "meta-llama/Meta-Llama-3-8B-Instruct"
tokenizer = AutoTokenizer.from_pretrained(model_id, subfolder="original") 
```