Vellum

Vellum (also known as Vocify) is a company that provides a developer platform for producing large language model (LLM) applications. It offers products such as Vellum Playground for performing comparisons of prompts, parameters, models, and model providers across a variety of test cases, Vellum Search for personalizing experiences using data, and Vellum Manage for testing, versioning, and monitoring changes.