CustomGPT vs SiteGPT (2026): which should you pick?
As of Nov 12, 2026, SiteGPT grades higher than CustomGPT: 2.0 against 1.8 out of 4.0.
Checked Nov 12, 2026 · graded Nov 12, 2026 by ToolGPA
SiteGPT grades higher on value for money. They get the same grade on the free plan, features, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
CustomGPT
No-code AI agents trained on your own content, with a RAG API
SiteGPT
AI chatbot trained on your site and docs, priced by messages
Which one is for you
Pick CustomGPT if
- Fits if you want a chatbot answering from existing docs and help articles
- Works for developers who want a hosted retrieval API over their content
Look elsewhere if
- Pricey if you are small: 1,000 queries a month at $89, and 5,000 at $449
- Skip it if you need a ticketing inbox or live chat for human agents
- Watch out: white-labelling, website auto-sync and PII removal need Premium
- Watch out: the page doesn't say what happens past your query limit
Pick SiteGPT if
- Fits if you want a bot that answers from your own site pages and files
- Works for a small business with one chatbot and one person watching it
Look elsewhere if
- Skip it if you won't put a card down: the 7-day trial requires one
- Tight if you have traffic: 4k messages a month on Starter, and GPT-4.1 messages count ten times as much as mini
- Pricey if you add on, as branding removal is $39 a month and WhatsApp and AI email $39 each
- Watch out: Starter has no API access, and the iOS app starts on Growth at $79
How we grade them
| 1.8GPACustomGPTWeak | 2.0GPASiteGPTFair | |
|---|---|---|
| Value for money | D$89 a month billed annually for 1,000 queries and 3 team members, which is where the dearest tenth starts. | C$39 a month billed annually for Starter ($59 monthly) is where the dearer quarter begins ($39). Starter has 1 member, and branding removal adds $39. |
| Free plan and trial | DA 7-day trial on each plan, with no word on a card. No free plan. | DA 7-day trial on every self-serve plan, but a credit card is required. There is no free plan. |
| Features | CAnswers with citations, a RAG API and connectors. It does the chatbot job but is no inbox or live chat, so a smaller job. | CA chatbot trained on up to 1,000 pages on Starter, with human handover. No ticketing is listed, and WhatsApp and AI email support are add-ons. |
| Ease of use | CNo store rating on record. Content to load and a widget to deploy. | CNo store rating on record, and you need to train and test the bot on your own content. |
| Platforms and integrations | BWeb, with Zendesk, HubSpot, Slack, Zapier, Shopify, WordPress, Confluence and Notion plus an API. | BWeb plus an iPhone app that starts on Growth, with 8 listed integrations. No Android or desktop app on record. |
| Best for | a chatbot that answers from your own docs | a chatbot trained on your own pages |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: CustomGPT and SiteGPT. How we grade
Price against what you get
CustomGPT starts at $89 a month and scores 2.3 out of 4 on features, ease of use and platforms. SiteGPT starts at $39 a month and scores 2.3.
They score the same, and SiteGPT starts $50 a month lower. Of the other help desk and live chat tools on the chart, 22 score higher than CustomGPT for less, and 18 score higher than SiteGPT for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- CustomGPT also covers AI search.
- SiteGPT also covers whatsApp messaging.
At a glance
| CustomGPT | SiteGPT | |
|---|---|---|
| Pricing | Free trial | Free trial |
| Starts at | $89 per month, billed annually ($99 billed monthly) | $39 per month, billed annually ($59 billed monthly), for up to 4k messages |
| Free plan | None | None |
| Free trial | 7-day free trial of Standard or Premium | 7-day free trial on every self-serve plan, credit card required |
| Web | ||
| iOS | ||
| Made by | CustomGPT.ai | SiteGPT |
| Price read from | customgpt.ai | sitegpt.ai |
| Checked | Nov 12, 2026 | Nov 12, 2026 |
Worth knowing
CustomGPT
- There is no free plan; each plan starts with a 7-day trial.
- Standard allows 1,000 queries a month and Premium 5,000. The pricing page does not say what happens beyond that.
- White-labelling, website auto-sync and PII removal need Premium; the AI model selector, priority queries and SSO need Enterprise.
- It answers questions from your content; it is not a ticketing inbox or live-chat tool for human agents.
SiteGPT
- There is no free plan; the 7-day trial on every self-serve plan needs a credit card.
- Messages are capped at 4k, 10k and 40k a month by plan, and GPT-4.1 messages count ten times as much as mini. Extra 5k packs cost $59 a month.
- Removing SiteGPT branding is a $39 a month add-on billed annually; WhatsApp and AI email support are $39 a month each, per number or inbox.
- Starter has a single member and no API access.
Key features
CustomGPT
- Agents trained on your content
- Feed an agent websites, PDFs, Office files, YouTube videos and audio, or sync from a help center or knowledge base. The page lists more than 1,400 document formats.
- Citations and anti-hallucination controls
- Answers cite the sources they came from, and the vendor describes the agents as built to answer only from the content you supply.
- RAG API
- Agents can be called from your own code through a RAG API with an SDK, available from the Standard plan.
- Data connectors
- Connectors listed for Standard include sitemap, WordPress, Wix, YouTube, HubSpot and Zendesk knowledge bases, Confluence, Shopify, Google Drive and Notion. Auto-sync of several of them starts at Premium.
- Deployment to Slack and sites
- Agents can be deployed to Slack and embedded on a website. Premium removes the CustomGPT.ai branding.
- Multi-language answers
- The pricing page lists support for more than 90 languages on every plan.
SiteGPT
- Chatbot trained on your content
- Train on links and files; one page counts as 2,500 cleaned characters. Starter refreshes manually, Growth monthly, Scale weekly and Enterprise daily.
- Human handover and iOS inbox
- The iOS app, from Growth, gives a live inbox with push notifications when a visitor asks for a person, and one tap to take over from the AI.
- Analytics and knowledge gaps
- Basic usage numbers on Starter. Growth adds trend charts, an engagement funnel, unanswered-question gaps and a weekly email digest; Scale adds AI-classified topics and sentiment.
- Zendesk AI agent
- On Scale and Enterprise, SiteGPT installs inside Zendesk Messaging to answer first and pass conversations to human agents with history.
- Integrations and API
- From Growth: API access plus connections to Slack, Messenger, Google Chat, Crisp, Freshdesk Messaging and Zoho SalesIQ, among others.
- WhatsApp and email add-ons
- WhatsApp (per number) and AI email support (per inbox) are paid add-ons, each from 1 to 25.
Plans
CustomGPT
Standard$89
per month, billed annually ($99 billed monthly), for 1,000 queries
10 agents, 5,000 documents per agent, 60 million words of storage, 3 team members and RAG API access. Branding stays on the widget.
Premium$449
per month, billed annually ($499 billed monthly), for 5,000 queries
25 agents, 20,000 documents per agent, 300 million words of storage, 5 team members, website auto-sync and removal of the CustomGPT.ai branding.
EnterpriseCustom
Limits on data, queries and seats set per customer, plus custom SSO, role-based access, a model selector and engineering help. Sold through sales.
SiteGPT
Starter$39
per month for up to 4k messages, billed annually ($59 billed monthly)
1 chatbot, up to 1,000 pages of training content, 1 member and basic analytics. Manual refresh only.
Growth$79
per month, up to 10k messages, billed annually ($129 monthly)
2 chatbots, 10,000 pages, 4 members, advanced analytics, API access, platform integrations and the iOS app.
Scale$259
per month, up to 40k messages, billed annually ($429 monthly)
3 chatbots, 50,000 pages, 10 members, webhooks, AI conversation insights and the Zendesk AI agent install.
EnterpriseCustom
Custom message volume, up to 500,000 pages, priority support, a signed DPA and BAA on request. Sold through sales.
Ways to pay less
CustomGPT
- Annual discount
Save 10% with yearly billing
The pricing page shows $89 a month on Standard and $449 on Premium when billed yearly, against $99 and $499 billed monthly.
SiteGPT
- Annual discount
Save up to 40% with yearly billing
The pricing page shows Starter at $39 a month billed yearly against $59 billed monthly, and says yearly billing saves up to 40%.
Common questions
Which is cheaper, CustomGPT or SiteGPT?
As of Nov 12, 2026, SiteGPT is cheaper to start with: $39 a month, against $89 a month for CustomGPT. CustomGPT starts at $89 per month, billed annually ($99 billed monthly), and SiteGPT starts at $39 per month, billed annually ($59 billed monthly), for up to 4k messages.
Which has a free plan, CustomGPT or SiteGPT?
As of Nov 12, 2026, neither CustomGPT nor SiteGPT has a free plan. Both have a free trial.
Which platforms do CustomGPT and SiteGPT run on?
As of Nov 12, 2026, only SiteGPT lists an iOS app. Both list a web app. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.