Open Source AI

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WizardLM

WizardLM is a family of open-weights instruction-tuned LLaMA-derived large language models and an associated data-synthesis methodology, both produced by a research group at Microsoft led by Can Xu.

Large Language Models

XGBoost

XGBoost (short for eXtreme Gradient Boosting) is an open-source software library that implements an optimized, distributed version of gradient boosted decision trees, and it is one of the most widely used…

AlgorithmsMachine Learning

XTTS (Coqui XTTS)

XTTS (sometimes stylized ⓍTTS, short for "cross-lingual text-to-speech") is an open-weights multilingual text-to-speech model developed by Coqui AI that performs zero-shot voice cloning from short reference…

Speech & Audio AIVoice AI

Xiaomi MiMo-V2.5

Xiaomi MiMo-V2.5 is an open-weights model family released by Xiaomi in April 2026, made up of two siblings that share a name but solve different problems.

AI ModelsChinese AI

Yi (language model)

Yi is a series of open, bilingual (English and Chinese) large language models developed by the Chinese startup 01.AI (Chinese: 零一万物, Lingyiwanwu), the company founded in March 2023 by Kai-Fu Lee.

Chinese AILarge Language Models

ZAYA1-8B

ZAYA1-8B is an open-weight, reasoning-focused Mixture-of-Experts (MoE) large language model released by San Francisco-based AI research lab Zyphra on May 6, 2026.

AI ModelsLarge Language Models

Zed (code editor)

Zed is an open-source, high-performance, multiplayer code editor written in Rust and developed by Zed Industries, the company founded by several of the creators of Atom and Tree-sitter.

Developer Tools

gpt-oss

gpt-oss is a family of open-weight large language models released by OpenAI on August 5, 2025, and OpenAI's first open-weight language models since GPT-2 in 2019.

AI ModelsLarge Language Models

llama.cpp

llama.cpp is an open-source large language model inference engine written in C and C++ by Bulgarian software engineer Georgi Gerganov that runs large language models on consumer-grade hardware without…

Developer ToolsLarge Language Models

mT5

mT5 (multilingual T5) is a transformer-based encoder-decoder language model released by Google Research in October 2020 that covers 101 languages in a single model, pre-trained on a Common Crawl corpus called…

Large Language ModelsNatural Language Processing

n8n

n8n (pronounced "n-eight-n") is a source-available workflow automation platform built for technical teams, developed by the Berlin-based company n8n GmbH.

AI AgentsAI Tools & Products

nnsight

nnsight is an open-source Python library for the interpretation and intervention of deep learning models, developed by the Bau Lab at Northeastern University.

Developer ToolsInterpretability

opencode (SST)

opencode is an open-source AI coding agent built for the terminal. Developed by Anomaly Innovations, formerly known as the SST (Serverless Stack) team, it provides a terminal user interface (TUI) through which…

AI AgentsAI Code Generation

pgvector

pgvector is an open-source PostgreSQL extension that adds vector similarity search to a standard PostgreSQL database, letting developers store, index, and query high-dimensional embeddings using ordinary SQL.

AI Infrastructure

smolagents

smolagents is an open source Python library for building agents powered by large language models (LLMs), released by hugging face on 30 December 2024.

AI AgentsDeveloper Tools

tiktoken

tiktoken is an open source byte pair encoding (BPE) tokenizer library released by OpenAI in December 2022 that converts text into the integer token sequences its language models read and write.

Natural Language ProcessingOpenAI

tinygrad

tinygrad is an open-source deep learning framework written primarily in Python that aims to occupy the space between Andrej Karpathy's pedagogical micrograd and full-scale production stacks like PyTorch.

Deep LearningDeveloper Tools