Prices and plan details were checked on the vendors' own pricing pages on September 26, 2026 and can change — always confirm on the vendor's site. CustGPT publishes this page and is one of the products compared. Product names are trademarks of their respective owners; CustGPT isn't affiliated with or endorsed by them.
First, the obvious question: CustGPT and CustomGPT.ai are separate, unrelated companies. Both let you build AI agents on your own content, but they're priced and designed around different priorities.
Quick verdict
- Choose CustGPT if your AI agent answers customers on your website and you want many more questions per dollar, with actions, human handoff and lead capture built in.
- Choose CustomGPT.ai if you need to index an enormous document library across many agents and expect relatively few questions each month.
Side-by-side
| CustGPT | CustomGPT.ai | |
|---|---|---|
| Entry price | $19.99 / month ($149 yearly) | $99 / month ($89 yearly) |
| Questions on entry plan | 1,500 replies | 1,000 queries |
| Higher self-serve plans | $49 (4,000) · $119 (10,000) · $419 (40,000) | $499 (5,000) |
| Cost per 1,000 questions | ~$10–$13 | ~$99 |
| Chatbots (Basic / Starter / Growth / Scale) | 1 / 1 / 2 / 3 | 10 / 25 agents |
| Content capacity | 300 / 1,000 / 10,000 / 50,000 pages & documents | 5,000 / 20,000 documents per agent |
| Premium AI models | ✅ Claude Sonnet 5, GPT-5.6 Sol, Gemini 3.1 Pro | Not compared here |
| Actions (call your APIs) | ✅ | Not confirmed on pricing page |
| Human handoff with live replies | ✅ | Not confirmed on pricing page |
| Lead capture + leads inbox | ✅ | Not confirmed on pricing page |
| Free trial | 7 days | 7 days |
The real difference: questions vs storage
Most website support assistants are limited by how many questions they can answer, not by how many documents they can store. A typical small-business site has a few hundred pages and receives thousands of questions a month. That's where CustGPT's pricing is designed to win.
CustomGPT.ai's plans flip the balance: generous document and storage allowances with a tighter query cap. That suits organisations indexing huge internal knowledge bases for occasional lookups.
Point CustGPT at your site and get an AI agent that answers from your content, with sources. Every plan starts with a 7-day free trial.
Example: an online store answering 4,000 questions a month
- CustomGPT.ai: 4,000 queries needs the Premium plan — $499/month.
- CustGPT: Starter covers 4,000 replies for $49/month, or Growth gives 10,000 replies and a second chatbot for $119.
Frequently asked questions
Are CustGPT and CustomGPT.ai the same company?
No. They're independent products from different companies with similar names.
Which is cheaper, CustGPT or CustomGPT.ai?
Per question answered, CustGPT is significantly cheaper — about $10–$13 per 1,000 replies compared with about $99 per 1,000 queries on CustomGPT.ai.
Which handles more documents?
CustomGPT.ai offers larger document and storage limits per agent, which suits very large knowledge libraries.
Can I try both?
Yes. Both offer a 7-day free trial.