When comparing Submit JSON and Netlify Forms, the biggest differences are pricing model, submission limits, and overall product focus.
Netlify Forms now uses credit-based billing, where form submissions consume usage credits. Submit JSON's closest paid tier starts at $15/month with 10,000 submissions, and scales to 50,000 submissions at $49/month.
Netlify Forms can be a fit if your project is already deeply integrated with Netlify hosting and tooling.
If you want an API-first backend that gives you full control over UX and works cleanly with modern JavaScript stacks, Submit JSON is usually the stronger fit.
Pricing and limits verified from public pricing/docs pages in April 2026; competitor plans may change over time.
Google Sheets integration