Usability
Interface 
User-friendliness/complexity of the tool´s interface
Minimalist, intuitive.
Time efficiency Time needed for mastering the „how-to“ of the tool and a production of a task
High; it can significantly reduce the time required for curriculum development and content creation if prompted correctly.
Interface language(s) The number of languages in which the tool is currently available/adaptable to
10+ languages (English, Spanish, French, German, and many others).
Respect for privacy Does the tool require registration? Who can see my data? Can I remain anonymous?
Medium. Anthropic collects user interaction data to operate and improve its services, and employs cookies and usage patterns for marketing and research purposes. However, Anthropic does not automatically use conversations to train future iterations of Claude AI models or allows anyone to access them unless users specifically opt in via the settings. It stores data in its headquarters in the United States and other countries, where it may transfer personal data, which is kept for as long as needed and protected through measures that are standard for the industry. However, for users in the EU, it guarantees GDPR compliance for international data transfers. Anthropic acknowledges users’ rights to know which data is being processed, and access, edit, block, or erase it, among others. It does not state full alignment with the GDPR. See more here and here for a comparison with other AI chatbots.
Saving work for future use Possiblity to save your or others´ work for reuse/reproduction
Yes; chat histories are automatically saved and searchable within the user Claude profile.
Tailorability (If so, how?) Possibility of the tool to be used for a range of different activities (e.g. to what extent you can organize a project assignment with a central activity based on this tool)