Mastodon's funding model is based on:

1. _Crowdfunding_: Mastodon raises funds through platforms like Patreon, GitHub Sponsors, and one-time donations.

2. _Community support_: Mastodon has a strong community of users and developers who contribute to the platform's development, moderation, and maintenance.

3. _Volunteer-driven_: Many developers, designers, and translators volunteer their time and skills to improve Mastodon.

4. _Sponsorships and grants_: Mastodon may receive sponsorships or grants from organizations that support its mission and values.

By relying on community support and crowdfunding, Mastodon maintains its independence and commitment to user privacy and autonomy, and avoids the influence of advertisers and corporate interests. This funding model allows Mastodon to prioritize its community's needs and values, and to create a more inclusive and decentralized social media platform.