AgenBase vs CustomGPT.ai: which is right for your website?
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The short answer
- CustomGPT.ai starts at $99 a month (or $89 billed yearly) for 1,000 queries. AgenBase Pro is $29 a month for 1,500 messages, and there is a free plan.
- CustomGPT.ai is built for large knowledge bases: up to 60 million words of storage, 5,000 documents per agent, many data connectors and an API.
- Removing CustomGPT.ai branding needs the $499 Premium plan. AgenBase removes its badge on every paid plan, and includes lead capture and bookings.
- For a business website with ordinary content, AgenBase costs a fraction. For very large document collections and API use, CustomGPT.ai is the stronger tool.
Plans side by side
Monthly prices in US dollars. CustomGPT.ai's figures are from its public pricing page on October 10, 2026.
AgenBase
| Plan | Price a month | Messages a month | Chatbots | Team members | Knowledge size | Per 1,000 messages |
|---|---|---|---|---|---|---|
| Free | $0 | 50 | 1 | No limit | 0.5M characters | $0 |
| Pro | $29 | 1,500 | 3 | No limit | 10M characters | $19.33 |
| Business | $99 | 6,000 | 10 | No limit | 40M characters | $16.50 |
CustomGPT.ai
| Plan | Price a month | Messages a month | Chatbots | Team members | Knowledge size | Per 1,000 messages |
|---|---|---|---|---|---|---|
| Standard | $99 | 1,000 | 10 | 3 | 60M words | $99.00 |
| Premium | $499 | 5,000 | 25 | 5 | 300M words | $99.80 |
CustomGPT.ai counts queries (questions), shared across all agents.
What the same setup costs
The cheapest way to cover each setup on each product, using the published prices for plans, extra chatbots, removing the badge and extra messages.
| Setup | AgenBase | CustomGPT.ai |
|---|---|---|
| One chatbot, 1,000 messages a month | $29 a month, Pro | $99 a month, Standard plus add-ons as needed |
| 3 chatbots, 1,500 messages, no badge | $29 a month, Pro | $499 a month, Premium plus add-ons as needed |
| 10 chatbots, 3,500 messages a month | $99 a month, Business | $474 a month, Standard plus add-ons as needed |
| 10 chatbots, 5,000 messages, no badge | $99 a month, Business | $499 a month, Premium plus add-ons as needed |
How it is worked out: for CustomGPT.ai, each plan with extra messages at $375 per 2,500, extra chatbots at $100 per 25 chatbots a month, only the plans that include an unbranded widget when a setup needs one. The cheapest total is shown, and one message is counted as one CustomGPT.ai message or credit. For AgenBase, Pro or Business plus extra messages up to the plan's safety cap.
Features compared
Only what CustomGPT.ai's pricing page lists is compared. A feature it doesn't list may still exist, and the page marks those rows.
Pricing and limits
| Feature | AgenBase | CustomGPT.ai |
|---|---|---|
| Free plan | 50 messages a month, no credit card | None. 7-day trial with a credit card |
| Messages or queries | 1,500 on Pro, 6,000 on Business | 1,000 on Standard, 5,000 on Premium |
| Chatbots | 3 on Pro, 10 on Business | 10 on Standard, 25 on Premium |
| Remove the vendor badge | Included on Pro and Business | Premium ($499) and above |
Knowledge and integrations
| Feature | AgenBase | CustomGPT.ai |
|---|---|---|
| Knowledge size | Up to 40M characters per chatbot on Business | 60M words on Standard, 300M on Premium |
| Data connectors | Documents, pasted text and web pages | Sitemap, WordPress, Wix, YouTube, HubSpot, Zendesk, Confluence, Shopify, Google Drive, Notion; SharePoint and auto-sync on Premium |
| API | Not yet | RAG API and OpenAI-compatible API |
Leads and bookings
| Feature | AgenBase | CustomGPT.ai |
|---|---|---|
| Contact form with AI lead summary | Built in on Pro and Business | Not listed on its pricing page |
| Appointment booking | Built in on Pro and Business | Not listed on its pricing page |
Where CustomGPT.ai is stronger
- Handles very large knowledge bases and many document types.
- Many data connectors and automatic syncing on Premium.
- An API, plus SSO, RBAC and a DPA on Enterprise.
Where AgenBase is stronger
- A free plan, and Pro at $29 instead of $99.
- No badge on every paid plan.
- Lead capture with AI summaries and bookings built in.
- Cheaper extra messages: $8 per 1,000, against $375 per 2,500 queries.
Which one should you choose?
Choose AgenBase if
- Your site has normal amounts of content.
- You want leads and bookings from the chat.
- You want to spend tens of dollars a month, not hundreds.
Choose CustomGPT.ai if
- You need to index tens of thousands of documents.
- You need an API or SharePoint and Confluence connectors.
- You need SSO and RBAC.
Questions
Can't find your answer? The team replies within one business day.
Is AgenBase an alternative to CustomGPT.ai?
For website chatbots that answer from a business's own pages and documents, yes, at a much lower price. For very large document sets and API work, CustomGPT.ai fits better.
Does CustomGPT.ai have a free plan?
No. It has a 7-day free trial that needs a credit card.
Keep comparing
About this comparison: CustomGPT.ai figures come from its public pricing page as of October 10, 2026. Prices and features change, so check its page before you decide. CustomGPT.ai is a trademark of its owner, and AgenBase is not affiliated with it. To correct something on this page, contact us.
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