Anthropic Open Source Projects

The agent engineering platform.

The fastest, litest AI Gateway. Rust core with Python SDK. Call 100+ LLM APIs in OpenAI (or native) format with cost tracking, guardrails, load balancing, and logging [Bedrock, Azure, OpenAI, Anthropic, OpenAI, VertexAI, vLLM, Nvidia NIM]

Enhanced ChatGPT Clone: Features Agents, MCP, Skills, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI, Gemini, Artifacts, AI model switching, message search, Code Interpreter, langchain, DALL-E-3, OpenAPI Actions, Functions, Secure Multi-User Auth, Presets, open-source for self-hosting. Active

This repo includes Claude prompt curation to use Claude better.

Modular Python framework for AI agents and workflows with chain-of-thought reasoning, tools, and memory.

Create chatbots with ease

🦙 Integrating LLMs into structured NLP pipelines

This project converts the API of Anthropic's Claude model to the OpenAI Chat API format.

🔒 Enterprise-grade API gateway that helps you monitor and impose cost or rate limits per API key. Get fine-grained access control and monitoring per user, application, or environment. Supports OpenAI, Azure OpenAI, Anthropic, vLLM, and open-source LLMs.

Ship RAG based LLM web apps in seconds.

Command-line interface for ChatGPT, Claude and Bard

Smoothly Manage Multiple LLMs (OpenAI, Anthropic, Azure) and Image Models (Dall-E, SDXL), Speed Up Responses, and Ensure Non-Stop Reliability.

Conversations with your files! Manage and run your AI presets!

Examples of integrating the OpenRouter API

An LLM agnostic desktop and mobile client.

Open source chat kit engineered for seamless interaction with AI models.

Amazon Bedrock Foundation models with Amazon Opensearch Serverless as a Vector DB

AI Coding Assistant in your IDE - ChatGPT (OpenAI) and Claude (Anthropic) in a VSCode extension.

An unofficial C#/.NET SDK for accessing the Anthropic Claude API. This package is not affiliated with, endorsed by, or sponsored by Anthropic. Anthropic and Claude are trademarks of Anthropic, PBC.

Anthropic Claude & Google Bard Bot for Telegram.

Claude_api is a Python package that provides a convenient way to interact with Claude 2 from Anthropic.

🚀 Building Go applications with LLMs through composability

✦ The intuitive LLM framework

allms: One Rust Library to rule them aLLMs