Sentence Transformers Python Packages

model2vec

Fast State-of-the-Art Static Embeddings

mteb

MTEB: State-of-the-art evaluation of embeddings across languages and modalities

setfit

Efficient few-shot learning with Sentence Transformers

beir

A Heterogeneous Benchmark for Information Retrieval. Easy to use, evaluate your models across 15+ diverse IR datasets.

brainlayer

Persistent memory MCP for AI agents — SQLite, knowledge graph, 13-tool Python MCP + 17-tool BrainBar surface with ToolAnnotations

vaultspec-rag

Search code and feature records by meaning through the command line or Model Context Protocol (MCP). Inference runs on your GPU.

widemem-ai

Local-first memory layer for LLM apps and agents. Runs offline on Ollama, sentence-transformers and FAISS; OpenAI and Anthropic optional. Importance scoring, contradiction resolution, confidence-aware retrieval.

top2vec

Top2Vec learns jointly embedded topic, document and word vectors.

agronaut

An open-source AI agronomy agent that runs locally on your own machine or server, reaches you on Telegram and WhatsApp, and computes aquaponics system designs from a deterministic, source-cited engineering core instead of guessing them.

neembed-geoopt

Fine-tune Sentence Transformers with Geoopt for hyperbolic and mixed-curvature embeddings, semantic retrieval, and hierarchy-aware learning.

pmb-ai

Local-first persistent memory for AI coding agents (Claude Code, Cursor, Codex) over MCP. Decisions, lessons and facts live in one SQLite file on your disk. Offline, multilingual.

classy-classification

This repository contains an easy and intuitive approach to few-shot classification using sentence-transformers or spaCy models, or zero-shot classification with Huggingface.

shutup-mcp

Experimental MCP proxy for filtering large tool lists using hybrid semantic and keyword retrieval

context-lens

Semantic search knowledge base for MCP-enabled AI assistants. Index local files or GitHub repos, query with natural language. Built on LanceDB vector storage. Works with Claude Desktop, Cursor, and other MCP clients.

fast-sentence-transformers

Simply, faster, sentence-transformers

easy-transformers

Utility functions to work with transformers

hitgate

Portable hybrid (BM25 + dense + RRF) retrieval engine and a label-free evaluation harness — extracted from a personal AI-assistant memory index and decoupled to run on any source tree.

verdictml

Small, fast, honest decision models. Open alternative to Jev: zero-shot, fit on your labels in seconds, calibrated with a coverage guarantee, Jev wire-compatible.

embedkit-py

Production embedding pipeline: chunking strategies, FAISS/in-memory vector stores, hybrid search (vector + BM25). PyPI package.

schema-matching

A python tool using XGboost and sentence-transformers to perform schema matching task on tables.

splade-index

Fast search index for SPLADE sparse retrieval models implemented in Python using Numpy and Numba

chainmem

ChainMem（链忆）— 链式 + 向量混合记忆系统，让 AI 拥有像人一样的联想式回忆

llm-behave

Behavioral testing for LLM applications. pytest plugin with semantic assertions, multi-turn conversation testing, and drift detection. No LLM judge needed.

hierarchy-transformers

Language Models as Hierarchy Encoders