Meta rebrands Llama Stack to OGX as open-source agentic API server
Meta has rebranded its Llama Stack project to OGX, an open-source agentic API server designed for building AI applications compatible with OpenAI’s API. Released under the MIT license, OGX supports any model and infrastructure, acting as a drop-in replacement for the OpenAI API. It simplifies local and cloud deployment, offering pluggable backends like Ollama, vLLM, or managed cloud services…
Key points
- OGX replaces Llama Stack as Meta’s open-source agentic API server, compatible with OpenAI’s API and any model/infrastructure
- Supports local (Ollama), cloud (vLLM), or managed providers with a single API surface, reducing migration effort
- Includes RAG, tool calling, and agentic orchestration, with a tutorial building a document-questioning assistant with task automation
The project, previously known as Llama Stack, boasts over 8,400 GitHub stars and 1,400 forks, with active community engagement. OGX includes features like server-side agentic orchestration, tool calling, and built-in RAG capabilities, reducing the need for manual vector database setup. A tutorial demonstrates how to build a DocBrain assistant that retrieves document content and flags actionable tasks, showcasing its practicality for real-world workflows.
Building AI Applications with OGX, the Open-Source Agentic API Server
KDnuggets · 15 October 2026
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