1. Pricing Model: Medium is a platform that offers both free and paid content, where users can read a limited number of articles for free before encountering a paywall, while Write.as follows a freemium model, offering a free basic plan with limitations and a paid Pro version with advanced features without any paywall restrictions.

2. Customization Options: Write.as provides more customization options for users to personalize their blogs, such as changing themes, fonts, and colors, while Medium focuses more on uniformity in layout and design across all posts.

3. Community Interaction: Medium emphasizes social networking features, allowing users to follow others, create connections, and receive recommendations based on their interests, while Write.as focuses more on individual writing and privacy with limited community engagement features.

4. Monetization Features: Write.as does not support monetization for individual bloggers, while Medium allows writers to earn money through the Partner Program based on the readership of their articles and membership subscriptions.

5. Visibility and Reach: Medium has a larger audience and greater visibility for content, increasing the potential reach of writers, while Write.as may have a smaller community but offers a more intimate and focused platform for sharing content.

6. Content Ownership: Write.as prioritizes user privacy and content ownership, allowing users to publish anonymously and retain control over their posts without the risk of them being monetized or distributed without consent, whereas Medium has terms and conditions that allow the platform to use published content for their own purposes.

In Summary, Medium and Write.as differ in their pricing model, customization options, community interaction, monetization features, visibility and reach, as well as content ownership policies.