ChatGPT
OpnForm
Pricing
PricingFreemium
PricingOpen Source
Free Plan
Free Plan
Free Plan
Side-by-side comparison based on pricing, features, and community data.
ChatGPT and OpnForm are both AI productivity tools. ChatGPT is Freemium; OpnForm is Open Source. These tools serve entirely different purposes and shouldn't be compared directly.
These tools serve entirely different purposes and shouldn't be compared directly. ChatGPT Writer is a browser extension for drafting emails and messages across web platforms. OpnForm is a form builder for collecting structured data. Pick ChatGPT Writer if you write hundreds of emails weekly and want AI assistance within Gmail and other text fields—the Chrome-only limitation and generation caps matter less for occasional use. Pick OpnForm if you need to collect survey responses, payments, or application data with full control over where that data lives. OpnForm's self-hosting appeals to privacy-focused teams; ChatGPT Writer's appeal is pure productivity for communicators. They don't compete.
Pick ChatGPT Writer if you handle high email volume and want AI-generated replies drafted inline within Gmail or any web form.
Pick OpnForm if you need to build forms for surveys, payments, or data collection with self-hosting and full privacy control.
| Feature | ChatGPT | OpnForm |
|---|---|---|
| Primary Function | Email/message writing assistant | Form builder for data collection |
| Platform Support | Chrome extension only | Web + API, self-hostable |
| Pricing Model | Freemium (generation limits) | Open-source (free, self-hosted) |
| Language Support | 20+ languages | Multi-language support |
| Payment Processing | — | Stripe, PayPal integration |
| Data Privacy Control | Depends on OpenAI terms | Full control via self-hosting |
| Mobile Experience | Works in mobile browsers (if extension available) | Responsive, less polished than Typeform |
Synthesized by AI from verified tool data · cached per pair
Limited AI generations per week
Unlimited generations, priority access
99% of features including unlimited forms, unlimited submissions, unlimited fields
Unlimited workspaces, form confirmation emails, Slack notifications, Discord notifications, editable submissions, 1 custom domain, custom code, 50mb file uploads, remove branding, priority support, form analytics, custom sender email
Everything in Pro Plan, self-hosted/dedicated instance, priority support, SAML SSO, security audits, 2FA, unlimited users
