Text Splitting Python Packages

semchunk

A fast, lightweight and easy-to-use Python library for splitting text into semantically meaningful chunks.

smart-slice

Fidelity-first document slicing for RAG pipelines: ~30 formats in, retrieval-ready paragraphs out.

chunklet-py

One library to split them all: Sentence, Code, Docs. Chunk smarter, not harder; built for LLMs, RAG pipelines, and beyond.

konan

Blazingly fast text chunkers in Rust with pythonic bindings. Rayon-parallel, real async, char-accurate offsets, semantic chunking

lumberjack-py

Structure-aware document splitter for RAG — parses any document into a unified AST and chunks by section/block boundaries. 面向 RAG 的结构感知文档分割器——将任何文档解析为统一的 AST，并按节/块边界进行分割。

chunklet

One library to split them all: Sentence, Code, Docs. Chunk smarter, not harder; built for LLMs, RAG pipelines, and beyond.

grain-growth-chunking

Structure-aware document chunking for RAG. Chunks grow along a document's own structure and never cross a barrier: no chunk spans two sections or splits a table. Pure standard library, no parser required. Pre-registered evaluation.

chunktuner

Benchmark chunking strategies for your RAG corpus. Get a recommended config. CLI, Python library, and MCP server.

structchunk

Markdown chunker for RAG. Structure-aware splitting preserves full semantic context; tables split at row boundaries.