Langfuse's March update introduces a series of enhancements, including a redesigned user interface for improved navigation and data display, as well as the highly requested prompt composability feature, which allows users to reuse and update prompts modularly. The update also introduces the concept of Environments, enabling the separation of production, staging, and development settings without using tags or projects, thus facilitating more efficient data management. Additional features include OpenAI Responses API support in SDKs, a public API for managing annotation queues, a new Java API client, and options for batch-exporting evaluation scores and scheduled exports to Blob Storage. The update also sees new integrations with multiple AI and data platforms, and Langfuse is actively expanding its team in Berlin, offering a referral bonus for new hires. The company is hosting a Town Hall to demonstrate recent updates and upcoming features for Q2.