deepset builds the Haystack open-source framework and the deepset AI Platform for developing and operating custom AI applications, including agents, retrieval-augmented generation systems, search, and document-processing workflows. The company says it serves enterprise, defense, and regulated industries such as finance, legal, media and publishing, government, healthcare, retail, and consumer goods, and its materials cite customers using the platform for enterprise search, knowledge management, virtual assistants, and related production AI systems. Haystack is the core technical foundation, designed as a modular Python framework that combines LLMs, retrieval components, and external tools to build compound AI systems. deepset was founded by Milos Rusic and is led by chief executive Nils Reimer. Public reporting says the company raised a $14 million round led by Balderton Capital; earlier coverage also notes a 2022 rollout of deepset Cloud. Its website lists offices in Berlin and San Francisco.