Vertex, Inc. engages in the provision of tax compliance software solutions. The company is headquartered in King Of Prussia, Pennsylvania and currently employs 1,500 full-time employees. The company went IPO on 2020-07-29. The firm operates as a solution provider of state, local and value-added tax calculation, compliance and analytics, offering software products which are sold through software license and software as a service (cloud) subscription. The company also provides implementation and training services in connection with its software license and cloud subscriptions, transaction tax returns outsourcing and other tax-related services. The firm offers a range of solutions, including tax determination, compliance and reporting, tax data management, document management, analytics and insights, industry-specific solutions, pre-built integrations, implementation services, and managed services. Its artificial intelligence (AI) capabilities leverage proprietary and private large language models (LLM) to deliver generative pre-trained transformer (GPT) capabilities to maintain a framework that increases the accuracy for tax compliance.