With Arize Phoenix, developers can quickly iterate during development and experiment phases of building an LLM application by running it locally, but for production or collaboration, they need to deploy Phoenix. The tool offers data persistence options via SQLite or PostgreSQL databases, enabling the ability to persist application telemetry data and collaborate with colleagues. Phoenix is an open source tool that helps engineers trace, evaluate, and iterate on generative AI applications, providing features such as logging traces, persisting datasets, running experiments, and sharing insights with colleagues.