Blue J vs LEXinform

Blue J is a web-based generative AI tax research application that answers difficult tax-law questions through a natural-language interface. Responses include relevant source documents, verifiable sources, in-line citations, and source lists. Users can upload their own files, combine them with Blue J’s authoritative tax database, analyze documents, and download answers as PDF or DOCX. The application can generate memos and emails. Blue J says its primary tax sources are current and updated daily, drawing mainly on primary resources and Tax Notes news and commentary. It uses language-model technology from OpenAI and Google and says customer data is not used to train generative AI models. Data is stored and processed in AWS us-east-1 in North Virginia; storage elsewhere and on-premise deployment are not offered. Optional customer files are deleted automatically after 24 hours. The Individual Plan costs $1,498 a year per user and includes US federal and SALT coverage, unlimited questions, drafting, uploads, citations, and source lists. A seven-day trial requires no credit card. Team plans add dedicated support, guided onboarding, firm-wide usage insights, SSO, and custom access controls.

LEXinform is a research database for current tax and business information used in professional advisory work. Its classic collection covers tax laws, administrative guidance, case law, pending proceedings, EU law, practical tools, and other tax materials. Comfort adds information on personnel management, commercial and civil law, EU law, and business administration. Cross-content search returns targeted results ordered by relevance, and the DATEV Wissensplattform can search LEXinform alongside partner databases from NWB and Haufe in one query. LEXinform plus adds LEXchat, which uses AI-assisted research across LEXinform comfort and DATEV Verlagsmedien comfort and provides references to sources. The product page says about 300,000 of roughly 600,000 documents are currently available to LEXchat. DATEV advises checking AI output for suitability, accuracy, and completeness and avoiding entry of sensitive personal or professionally protected data. Protected documents require DATEV SmartLogin or DATEV mIDentity/SmartCard. LEXinform comfort works online on smartphones and tablets as well as in the user's usual DATEV environment. A DATEV Basis-Angebot Zusatzmodul costs €14.80 a month; other listed product prices are not provided.