How is this SDK different from Polar's?

how is this SDK different from Polar's?

Great! Now I have a good understanding of both. Let me provide you with a comprehensive comparison:

##Key Differences Between Autumn and Polar

1. Role in the Payment Stack

• Autumn: Acts as an abstraction layer on top of Stripe. It sits between Stripe and your application, managing billing logic, metering, and entitlements without touching payment processing.
• Polar: A complete, standalone billing platform that acts as a Merchant of Record (MoR), handling both payments and tax compliance globally.

2. Tax Handling

• Autumn: You still need to handle tax compliance separately (e.g., through Stripe Tax) since Autumn doesn't process payments directly.
• Polar: Handles global tax compliance for you as part of the MoR service - a major advantage for international selling.

3. Webhook Management

• Autumn: "No webhooks required" - you query the API for the data you need. This simplifies your backend significantly.
• Polar: More traditional webhook-based approach, though it's still developer-friendly.

4. Use Cases

• Autumn: Best for teams already using Stripe who need sophisticated billing logic like usage-based pricing, credits, seat-based billing, and per-feature usage limits. Great for AI/usage-heavy startups.
• Polar: Best for creators, indie hackers, and OSS projects wanting a complete alternative to Stripe with built-in perks, sponsorships, and repo-gating features.

5. Pricing Model

• Autumn: Free up to $3,000 MRR, then scales to $375/month. No additional transaction fees beyond standard Stripe rates.
• Polar: 4% + $0.40 per transaction (20% lower fees than traditional payment processors).

6. Open Source Both are open-source, but Autumn is positioned for self-hosting on top of Stripe infrastructure, while Polar is a standalone, fully-featured billing platform.

In short: Choose Autumn if you're already committed to Stripe and want to simplify complex billing logic. Choose Polar if you want a complete, tax-aware payment platform that's developer-friendly and creator-focused.