tokforge
Fast BPE tokenization for Python, backed by a Rust engine.
GPT-2, GPT-4 (cl100k_base), GPT-4o (o200k_base) and Qwen2-style tokenizers run on a
byte-level BPE core written from scratch, checked against tiktoken and Hugging Face tokenizers
by differential tests and long soak runs without a mismatch. On the project's benchmark it is
1.4x to 4.6x as fast as tiktoken with identical output. Any other Hugging Face tokenizer.json
(BERT, XLM-R, ...) loads too and runs on the Hugging Face backend.
import tokforge
tok = tokforge.Tokenizer.from_file("tokenizer.json")
tok.encode("hello world") # [31373, 995]
tok.count("hello world") # 2
tok.decode([31373, 995]) # "hello world"
tok.encode_batch(["a", "b", "c"]) # parallel, releases the GIL
tok.truncate(long_text, 512) # a prefix of long_text within 512 tokens
tok.chunk(long_text, 512) # slices that join back to long_text
Options, all keyword-only:
special_tokens="literal"(default) treats spellings like<|endoftext|>in the input as plain text;"recognize"matches them as special tokens.add_special_tokens=False(default);Trueadds the model's BOS/EOS tokens.core="auto"(default) uses the custom core where it applies;"backend"forces the Hugging Face path;"verify"runs both and raises if they ever disagree.
Errors raise ValueError (bad options, unknown ids, invalid input) or OSError (file).
License: MIT OR Apache-2.0.
1 maintainer
Metadata
1 maintainer
Release files for tokforge 0.1.0
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
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Built distributions (wheels)
| File | Actions Reset | |||
|---|---|---|---|---|
| tokforge-0.1.0-cp39-abi3-win_amd64.whl | CPython 3.9 | abi3 | Windows x86-64 | Details for tokforge-0.1.0-cp39-abi3-win_amd64.whl |
| tokforge-0.1.0-cp39-abi3-manylinux2014_x86_64.manylinux_2_17_x86_64.whl | CPython 3.9 | abi3 | Linux glibc 2.17+ x86-64 | Details for tokforge-0.1.0-cp39-abi3-manylinux2014_x86_64.manylinux_2_17_x86_64.whl |
| tokforge-0.1.0-cp39-abi3-manylinux2014_aarch64.manylinux_2_17_aarch64.whl | CPython 3.9 | abi3 | Linux glibc 2.17+ ARM64 | Details for tokforge-0.1.0-cp39-abi3-manylinux2014_aarch64.manylinux_2_17_aarch64.whl |
| tokforge-0.1.0-cp39-abi3-macosx_11_0_arm64.whl | CPython 3.9 | abi3 | macOS 11.0+ ARM64 | Details for tokforge-0.1.0-cp39-abi3-macosx_11_0_arm64.whl |
| tokforge-0.1.0-cp39-abi3-macosx_10_12_x86_64.whl | CPython 3.9 | abi3 | macOS 10.12+ x86-64 | Details for tokforge-0.1.0-cp39-abi3-macosx_10_12_x86_64.whl |
Total release size: 9.8 MB
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