crusoecloud/fastokens

💥 Fast State-of-the-Art Tokenizers optimized for Research and Production

Minimal, clean code for the Byte Pair Encoding (BPE) algorithm commonly used in LLM tokenization.

Language model tokenization at GB/s

tiktoken is a fast BPE tokeniser for use with OpenAI's models.

Typescript and .NET implementation of BPE tokenizer for OpenAI LLMs.

The fastest JavaScript BPE Tokenizer Encoder Decoder for OpenAI's GPT models (gpt-5, gpt-o*, gpt-4o, etc.). Port of OpenAI's tiktoken with additional features.

🛥 Vaporetto: Very accelerated pointwise prediction based tokenizer

Unsupervised text tokenizer for Neural Network-based text generation.

Unofficial ruby binding for tiktoken by way of rust