claude-tokenizer / README.md
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metadata
library_name: transformers
tags:
  - transformers.js
  - tokenizers
license: mit

Claude Tokenizer

A 🤗-compatible version of the Claude tokenizer (adapted from anthropics/anthropic-sdk-python). This means it can be used with Hugging Face libraries including Transformers, Tokenizers, and Transformers.js.

Example usage:

Transformers/Tokenizers

from transformers import GPT2TokenizerFast

tokenizer = GPT2TokenizerFast.from_pretrained('Xenova/claude-tokenizer')
assert tokenizer.encode('hello world') == [9381, 2253]

Transformers.js

import { AutoTokenizer } from '@xenova/transformers';

const tokenizer = await AutoTokenizer.from_pretrained('Xenova/claude-tokenizer');
const tokens = tokenizer.encode('hello world'); // [9381, 2253]