Chatbase vs CustomGPT, compared on price and made-up answers
Chatbase trains an AI agent on your content, starts free and charges in credits that run down faster on bigger models. CustomGPT.ai has no free plan, takes a card for its 7-day trial, and builds its pitch on answers that come only from your content, with citations. Here they’re compared on price, limits and how each keeps an agent from making things up. Deacon, in the third column, is an AI customer support agent for founders who handle support themselves. It has a free plan, and it needs no card.
Prices read on chatbase.co/pricing and customgpt.ai/pricing on 23 September 2026
Credits on Chatbase, queries on CustomGPT
Chatbase charges in message credits, and you can start on its free plan, with 50 a month. A reply costs 1 to 6 credits depending on the model, and an action can double that with a second request. Credits renew on the 1st of each calendar month, and unused ones don’t carry over. Hobby, at $40 a month, or $32 a month billed yearly, has 700 credits, which is 116 to 700 replies, or fewer when actions run. An agent on the free plan is deleted after 14 days without use. Chatbase pricing sets out what happens when the credits run out.
CustomGPT charges in queries, and there’s no free plan. The 7-day trial of Standard needs a card, and when it ends you’re charged for the plan you chose, unless you cancel. Standard is $99 a month, or $89 a month billed yearly, for 1,000 queries, 10 agents, 3 team members and 60 million words of content. Every message your agents process counts as a query, visitors’ messages included, and actions such as Lead Capture cost extra queries. All your agents draw on the same balance. Premium, at $499 a month, or $449 billed yearly, has 5,000 queries and 25 agents, and removes the CustomGPT branding.
The gap widens when you run out. Chatbase’s auto recharge, if you’ve switched it on, adds credits at $40 per 1,000. On CustomGPT, the agent stops responding until the next cycle, and the add-on that takes you past the limit is 2,500 extra queries at $375 a month, more than three times the price of Standard itself. So Chatbase is cheaper to start and to top up, and CustomGPT sells room, with more agents and far more content, than a single product usually needs.
Chatbase, CustomGPT and Deacon side by side
| Feature | Chatbase | CustomGPT | Deacon |
|---|---|---|---|
| Free plan | 50 message credits a month for 1 member and 1 agent, with limited access to models. An agent is deleted after 14 days of inactivity | None. A 7-day trial of Standard needs a card, and becomes a paid plan unless you cancel | 50 answers a month for 1 seat, with every feature. It needs no card, has no end date and deletes nothing for inactivity |
| Cheapest paid plan | Hobby, $40 a month, or $32 a month billed yearly, for 700 credits and 2 members | Standard, $99 a month, or $89 a month billed yearly, for 1,000 queries, 10 agents and 3 team members | Starter, $50 a month, or $40 a month billed yearly, for 1,000 answers |
| What the allowance counts | Requests to the AI model, at 1 to 6 credits a reply depending on the model. An action can add a second request | Every message your agents process, visitors’ included, at 1 query each on the standard models and more when an action runs, shared across all your agents | Replies Deacon writes on your live site, all on the same model. Chats in the Playground and from localhost aren’t counted |
| When the allowance runs out | Visitors read “This AI Agent is currently unavailable. If you are the owner, please check your account.” | It stops responding to queries until your next billing cycle. A query already under way still finishes | Visitors get a short reply saying Deacon can’t look into it right now, and are asked for their email unless they’ve already left it |
| Paying past the limit | Auto recharge, if you switch it on, at $40 per 1,000 credits. The free plan can’t buy add-ons | An add-on of 2,500 extra queries a month, at $375, or $338 a month paid annually | Never. No plan bills past its answers or upgrades itself |
| Keeping to your content | Up to your instructions. Chatbase’s guide suggests telling the agent to answer only from its training data, and a Web Search action can answer beyond it | Its main pitch, which it calls a context boundary wall. You can reword its “I don’t know the answer” message, and a Web Search action, off by default, can answer beyond it | It answers only from what it finds in your content. When that doesn’t cover the question, it says it doesn’t know and asks for the visitor’s email |
| Showing sources | Chatbase’s docs don’t describe citing sources to visitors | Citations on every plan once you switch them on, inline or after the reply | An answer from a page on your site usually links to it. One from a file, pasted text or an answer you wrote shows no link |
| When a person needs to step in | Its helpdesk, where a teammate takes over, and integrations with helpdesks such as Zendesk start on Standard, at $150 a month | Its docs describe no takeover. A Lead Capture action collects visitors’ details, which you export as a CSV or send to Zapier | You get an email when a visitor leaves an address or asks for a person, and your reply from the dashboard appears in their open chat |
| Removing their badge | Removing “Powered By Chatbase” is an add-on at $99 a month | Removing “Powered by CustomGPT” needs Premium, at $499 a month, or $449 billed yearly | No plan shows a “powered by” line, so there’s no badge to pay to remove |
| Analytics | On paid plans only and a day behind, with topics and sentiment on Pro | Basic analytics and customer intelligence on every plan, with 7 days of history on Standard and all of it from Premium | Topics that group questions, count who asked and label most of them, plus website analytics from the same script, on every plan |
| What it learns from, and how much | Files up to 20 MB, a crawled site, links, text, Q&A pairs and Notion, up to 1 MB of training content on Free and 10 MB on Hobby | Websites, PDFs and Office files among over 1,400 formats, YouTube and audio, and Drive, Notion or Zendesk, up to 60 million words on Standard | Your website, files, pasted text and the answers you write, up to 1 MB of text on Free and 15 MB on Starter |
| Channels | 16, including the website bubble, email, phone calls through Twilio or SIP, Slack, WhatsApp, Messenger, Instagram and Shopify | A live chat widget, an embed or iframe, a share link, Slack, its API and an MCP server. WhatsApp takes the API and Make.com or Twilio | The chat widget on your own website |
| Getting it on your site | Copy the embed script into your site’s head, or just before the closing body tag | Make the agent public, then paste the live chat script from Deploy into your site’s HTML | One script tag before the closing body tag, or a prompt your coding agent follows to add it and check it’s live |
| Seats | 1 on Free, 2 on Hobby, 3 on Standard and 5 on Pro | 3 on Standard and 5 on Premium, with 5 more for $100 a month | 1 seat on Free, 3 seats on Starter |
Free plan
- Chatbase
- 50 message credits a month for 1 member and 1 agent, with limited access to models. An agent is deleted after 14 days of inactivity
- CustomGPT
- None. A 7-day trial of Standard needs a card, and becomes a paid plan unless you cancel
- Deacon
- 50 answers a month for 1 seat, with every feature. It needs no card, has no end date and deletes nothing for inactivity
Cheapest paid plan
- Chatbase
- Hobby, $40 a month, or $32 a month billed yearly, for 700 credits and 2 members
- CustomGPT
- Standard, $99 a month, or $89 a month billed yearly, for 1,000 queries, 10 agents and 3 team members
- Deacon
- Starter, $50 a month, or $40 a month billed yearly, for 1,000 answers
What the allowance counts
- Chatbase
- Requests to the AI model, at 1 to 6 credits a reply depending on the model. An action can add a second request
- CustomGPT
- Every message your agents process, visitors’ included, at 1 query each on the standard models and more when an action runs, shared across all your agents
- Deacon
- Replies Deacon writes on your live site, all on the same model. Chats in the Playground and from localhost aren’t counted
When the allowance runs out
- Chatbase
- Visitors read “This AI Agent is currently unavailable. If you are the owner, please check your account.”
- CustomGPT
- It stops responding to queries until your next billing cycle. A query already under way still finishes
- Deacon
- Visitors get a short reply saying Deacon can’t look into it right now, and are asked for their email unless they’ve already left it
Paying past the limit
- Chatbase
- Auto recharge, if you switch it on, at $40 per 1,000 credits. The free plan can’t buy add-ons
- CustomGPT
- An add-on of 2,500 extra queries a month, at $375, or $338 a month paid annually
- Deacon
- Never. No plan bills past its answers or upgrades itself
Keeping to your content
- Chatbase
- Up to your instructions. Chatbase’s guide suggests telling the agent to answer only from its training data, and a Web Search action can answer beyond it
- CustomGPT
- Its main pitch, which it calls a context boundary wall. You can reword its “I don’t know the answer” message, and a Web Search action, off by default, can answer beyond it
- Deacon
- It answers only from what it finds in your content. When that doesn’t cover the question, it says it doesn’t know and asks for the visitor’s email
Showing sources
- Chatbase
- Chatbase’s docs don’t describe citing sources to visitors
- CustomGPT
- Citations on every plan once you switch them on, inline or after the reply
- Deacon
- An answer from a page on your site usually links to it. One from a file, pasted text or an answer you wrote shows no link
When a person needs to step in
- Chatbase
- Its helpdesk, where a teammate takes over, and integrations with helpdesks such as Zendesk start on Standard, at $150 a month
- CustomGPT
- Its docs describe no takeover. A Lead Capture action collects visitors’ details, which you export as a CSV or send to Zapier
- Deacon
- You get an email when a visitor leaves an address or asks for a person, and your reply from the dashboard appears in their open chat
Removing their badge
- Chatbase
- Removing “Powered By Chatbase” is an add-on at $99 a month
- CustomGPT
- Removing “Powered by CustomGPT” needs Premium, at $499 a month, or $449 billed yearly
- Deacon
- No plan shows a “powered by” line, so there’s no badge to pay to remove
Analytics
- Chatbase
- On paid plans only and a day behind, with topics and sentiment on Pro
- CustomGPT
- Basic analytics and customer intelligence on every plan, with 7 days of history on Standard and all of it from Premium
- Deacon
- Topics that group questions, count who asked and label most of them, plus website analytics from the same script, on every plan
What it learns from, and how much
- Chatbase
- Files up to 20 MB, a crawled site, links, text, Q&A pairs and Notion, up to 1 MB of training content on Free and 10 MB on Hobby
- CustomGPT
- Websites, PDFs and Office files among over 1,400 formats, YouTube and audio, and Drive, Notion or Zendesk, up to 60 million words on Standard
- Deacon
- Your website, files, pasted text and the answers you write, up to 1 MB of text on Free and 15 MB on Starter
Channels
- Chatbase
- 16, including the website bubble, email, phone calls through Twilio or SIP, Slack, WhatsApp, Messenger, Instagram and Shopify
- CustomGPT
- A live chat widget, an embed or iframe, a share link, Slack, its API and an MCP server. WhatsApp takes the API and Make.com or Twilio
- Deacon
- The chat widget on your own website
Getting it on your site
- Chatbase
- Copy the embed script into your site’s head, or just before the closing body tag
- CustomGPT
- Make the agent public, then paste the live chat script from Deploy into your site’s HTML
- Deacon
- One script tag before the closing body tag, or a prompt your coding agent follows to add it and check it’s live
Seats
- Chatbase
- 1 on Free, 2 on Hobby, 3 on Standard and 5 on Pro
- CustomGPT
- 3 on Standard and 5 on Premium, with 5 more for $100 a month
- Deacon
- 1 seat on Free, 3 seats on Starter
Read on 23 September 2026 from chatbase.co/pricing and customgpt.ai/pricing, which both open on monthly prices. Every other page used is listed at the end.
When to choose Chatbase, and when CustomGPT
Choose Chatbase if you want to start free and be answering visitors within the hour. The same agent runs on 16 channels, can let a customer track a Shopify order or change their Stripe plan, and grows into a helpdesk and phone calls on Standard, at $150 a month. Just write the instruction to stay inside your content yourself, because Chatbase leaves that to you.
Choose CustomGPT if an answer outside your content would cost you dearly, and you want citations and a boundary around your content built in. It also suits a large archive, with 60 million words on its first plan, over 1,400 file formats and YouTube and audio as sources, and an agency running agents for several clients. Budget for the card-first trial and the price of going over.
Neither is shaped for a founder who answers support alone. One makes you watch a credit meter, and the other charges for room you won’t use. There’s a third option, built for exactly that founder.
Why a founder might choose Deacon over both
The fear with any support bot is that it invents a refund policy in front of your customer. Deacon answers only from what it finds in your own docs, and when they don’t cover a question, it says it doesn’t know and asks for the visitor’s email. There’s no instruction for you to write first. It answers in seconds, at any hour, in the language your customer writes in, and an answer taken from a page on your site usually links to that page. You get an email when a visitor leaves an address or asks for a person, and you reply from Deacon’s dashboard.
The questions it can’t answer are where it improves. Each one your docs didn’t cover gets an Answer this button, and the answer you write becomes part of what Deacon knows. Save & check shows you the reply Deacon now gives and how many other open questions your answer covers, so it can answer the next person who asks, and it needs you less each time.
You also learn what your customers need. Every conversation is saved and searchable by what visitors asked. Topics group similar questions, count the people behind them and label most of them, as a feature ask, a bug report or a how-to, so the most-asked question is at the top of your list. The same script runs website analytics too, with visitors, sources, goals and funnels, on every plan.
And trying it costs nothing. The free plan needs no card, has no end date and deletes nothing for inactivity. Every feature is on every plan, and the plans differ only in answers, knowledge, pages from your website and seats. Every plan answers with the same model, so no credits run out faster on a better one. Nothing is billed past your plan’s answers, no plan upgrades itself, and there’s no badge to pay to remove.
Questions about Chatbase, CustomGPT and Deacon
Where these figures came from
Every figure above was read on 23 September 2026, from these pages.
- Chatbase www.chatbase.co/pricing · www.chatbase.co/docs/faq/faq · www.chatbase.co/docs/user-guides/chatbot/build · www.chatbase.co/docs/user-guides/quick-start/best-practices · www.chatbase.co/docs/user-guides/chatbot/actions/web-search · www.chatbase.co/docs/user-guides/chatbot/actions/chatbase-live-chat · www.chatbase.co/docs/user-guides/chatbot/actions/shopify-actions · www.chatbase.co/docs/user-guides/chatbot/actions/stripe-action · www.chatbase.co/docs/user-guides/chatbot/analytics · www.chatbase.co/docs/user-guides/chatbot/data-sources · www.chatbase.co/docs/user-guides/chatbot/channels
- CustomGPT.ai customgpt.ai/pricing/ · customgpt.ai/anti-hallucination/ · docs.customgpt.ai/docs/how-customgptai-usage-limits-work · docs.customgpt.ai/docs/understanding-query-consumption-for-high-performance-models · docs.customgpt.ai/docs/actions-cost · docs.customgpt.ai/docs/how-web-search-agentic-action-works · docs.customgpt.ai/docs/how-to-activate-citations-for-your-ai-agent · docs.customgpt.ai/docs/how-to-change-the-i-dont-know-the-answer-message · docs.customgpt.ai/docs/lead-capture-overview · docs.customgpt.ai/docs/live-chat-1 · docs.customgpt.ai/docs/customgptai-whatsapp-integration · docs.customgpt.ai/reference/whatsapp-bot-using-apis-and-twilio · docs.customgpt.ai/llms.txt
Try Deacon for free
Deacon answers your customers in seconds from your own docs, says so plainly when it doesn’t know, and shows you what they keep asking for. There’s no card to start and no instruction to write first, and every feature is on the free plan.
More rivals are priced side by side in Chatbase alternatives, and why chatbots hallucinate goes further into keeping a bot to your content. Deacon’s facts are on its plain facts page and its plans on the pricing page.






