A: Hi. Thanks for your question. The storage is for meant for the reference manager which essentially can be used as your knowledge base. In terms of features, tier 1 and tier 2 will have same quality except that the feature limits would vary. For example the number of columns you can extract and download at a time in literature review and extract data feature will be 8 vs 50. Similarly the number of papers/pdfs you can select at a time in extract data will be 25 vs 100. Automatic Full article generation feature in AI writer limits per month will be 3 vs 20. In our upcoming deep research reports, this limit will be 10 vs 50 per month.