Marvin vs OGX (formerly Llama Stack)

Marvin and OGX (formerly Llama Stack) are both agent frameworks. Marvin is published by Prefect and OGX (formerly Llama Stack) by OGX. On GitHub, OGX (formerly Llama Stack) has 8,444 stars and Marvin has 6,207. Marvin was last active in Sep 2026, OGX (formerly Llama Stack) in Oct 2026. The table lines up where they differ (publisher, license, weekly downloads and freshness grade) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. Marvin describes itself as: Python framework for structured LLM outputs and agentic workflows built from tasks, agents and threads. OGX (formerly Llama Stack): OpenAI-compatible agentic API server for inference, vector stores, files and skills, on any model or infrastructure. Licenses: Marvin Apache-2.0, OGX (formerly Llama Stack) MIT.