Table of Contents
- What is CustomGPT?
- How does CustomGPT work?
- What features does CustomGPT offer?
- Data ingestion and limits
- Integrations and auto-sync
- Answer quality: citations and model choice
- Security and compliance
- Analytics and support
- How much does CustomGPT cost in 2026?
- What does CustomGPT cost per year?
- Does CustomGPT have a free plan or free trial?
- What add-ons does CustomGPT charge for?
- What does CustomGPT cost at your volume?
- What are CustomGPT's pros and cons?
- Pros
- Cons
- What do users say about CustomGPT?
- Who should use CustomGPT?
- What are the best CustomGPT alternatives?
- What does an unbranded widget cost on each tool?
- CustomGPT vs SiteGPT: which one fits?
- How to choose between CustomGPT and its alternatives
- Frequently asked questions
- Basics
- What is CustomGPT?
- Is CustomGPT the same as a custom GPT in ChatGPT?
- How many languages does CustomGPT support?
- Pricing and trial
- How much does CustomGPT cost?
- Does CustomGPT have a free plan?
- What happens when CustomGPT queries run out?
- Does CustomGPT offer refunds?
- Features and compliance
- Can you remove CustomGPT branding?
- Does CustomGPT have an API?
- Is CustomGPT GDPR compliant?
- Alternatives
- What are the best CustomGPT alternatives?
- Is there a cheaper alternative to CustomGPT?
- Sources
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Dec 27, 2025 08:38 AM
CustomGPT is a no-code platform for building AI agents that answer from your own content, and it costs $99 a month for the Standard plan or $499 a month for the Premium plan on monthly billing. It fits teams that need several agents trained on large document sets in many file formats. Teams that expect more than 1,000 questions a month, or need an unbranded widget, should price the alternatives below before starting the trial.
TL;DR
- CustomGPT builds AI agents from websites, help centers, PDFs, Office files, YouTube videos, and audio. It lists support for 1,400+ document formats.
- Pricing on monthly billing: Standard $99 (10 agents, 1,000 queries) and Premium $499 (25 agents, 5,000 queries). Annual billing is $89 and $449 a month. Enterprise is custom.
- Both plans work out to about $0.10 per included query. Extra queries cost $375 a month for 2,500, which is $0.15 each.
- Branding removal, website auto-sync, and the PII anonymizer start on Premium. A data processing agreement, SSO, and the AI model selector are Enterprise only.
- Among alternatives, SiteGPT fits one customer service chatbot that needs human escalation and more monthly messages at a lower price, from $39 a month billed yearly. It has no free plan and supports far fewer file formats.
Aspect | Verdict |
Best for | Teams that need several agents trained on large, mixed-format document sets, with citations on every answer |
Free plan | No. A 7-day free trial is available and it requires a credit card |
Pricing | Standard $99 and Premium $499 a month on monthly billing. $89 and $449 a month on annual billing |
Biggest strength | 10 agents, 5,000 documents per agent, and 60 million words of storage on the entry plan |
Biggest limitation | 1,000 queries a month on Standard, and extra queries at $0.15 each |
Branding removal | Premium ($499 a month) and Enterprise only |
G2 rating | 4.0 out of 5 from 1 review |
What is CustomGPT?
CustomGPT is a no-code platform that turns your business content into AI agents. You connect data, the platform indexes it, and the agent answers questions from that content with a link to the source.
The CustomGPT.ai homepage describes the product as governed AI assistants for the enterprise and says more than 10,000 organizations use it. The same page lists three selling points: answers grounded in your data, 1,400+ supported document types, and ready-made widgets for deployment.
CustomGPT is a separate company from OpenAI. A custom GPT built inside ChatGPT is a different product. The guide to training ChatGPT on your own data explains where each approach fits.
How does CustomGPT work?
CustomGPT works in two steps, according to its homepage:
- Connect data. Add a sitemap, upload files, or connect a source such as Google Drive, Notion, or a Zendesk knowledge base.
- Deploy. Embed a widget on a website, deploy to Slack, or call the RAG API from your own application.
Answers come from retrieval-augmented generation (RAG). The agent searches your indexed content for relevant passages and writes a reply from them. CustomGPT markets this as anti-hallucination technology. RAG lowers the rate of invented answers but does not remove it, and the guide to chatbot hallucinations covers the causes.
What features does CustomGPT offer?
CustomGPT offers five feature groups that matter for a buying decision: data ingestion, integrations and sync, answer quality controls, security and compliance, and analytics and support. Every item below comes from the plan comparison on the CustomGPT.ai pricing page.
Data ingestion and limits
CustomGPT trains on these source types on every plan:
- Business websites, helpdesks, knowledge bases, and public web content
- PDF documents
- Office documents such as Word and PowerPoint, plus 1,400+ document formats
- YouTube videos, audio files, podcasts, and voice recordings
Limits are counted in agents, documents, and words. Words stored are shared across all agents on the account.
Limit | Standard | Premium |
Agents | 10 | 25 |
Documents per agent | 5,000 | 20,000 |
Storage capacity | 60 million words | 300 million words |
Monthly document processing | 10,000 documents | 40,000 documents |
Queries a month | 1,000 | 5,000 |
Image citations a month (AI Vision) | 500 | 2,500 |
Team members | 3 | 5 |
CustomGPT gives a rule of thumb for storage: 10 million words is about 50 MB of data. Standard's 60 million words is therefore roughly 300 MB of text.
Integrations and auto-sync
CustomGPT lists these integrations on its pricing page:
Integration | Standard | Premium |
Sitemap, WordPress, Wix, YouTube, HubSpot Knowledge Base | Included | Included with auto-sync |
Zapier, Zendesk Knowledge Base, Confluence, Shopify, Google Drive, Notion | Included | Included. Auto-sync is listed on Enterprise |
Slack (deployment) | Included | Included |
SharePoint | Not included | Included |
RAG API access | Included | Included |
Auto-sync is the gap on the entry plan. On Standard, the agent does not re-read a website on its own schedule. Premium adds auto-sync for website content, and Enterprise lists automated real-time sync for all data sources.
Answer quality: citations and model choice
CustomGPT lists citations and sources, anti-hallucination, and privacy controls on every plan. Each response can link to the document it came from.
Model choice is limited on the two self-serve plans. The AI model selector, priority queries, and advanced persona and prompt-length settings are listed on Enterprise only. Standard and Premium list the OpenAI API. Enterprise adds Microsoft Azure OpenAI and Claude models through AWS Bedrock.
Security and compliance
CustomGPT lists SOC2 Type 2 and GDPR compliance on every plan, along with SSL and 256-bit AES encryption. The pricing page also states that customer data is not used for training or shared.
Three items sit higher up:
- Remove PII / anonymizer: Premium and Enterprise.
- Data processing agreement: Enterprise only.
- Custom SSO, role-based access, and private agent deployment: Enterprise only.
A team that must sign a DPA before sending personal data to a vendor needs the Enterprise plan. How other vendors handle this is covered in the guide to GDPR compliant chatbot platforms.
Analytics and support
Standard includes basic analytics and customer intelligence with a 7-day history. Premium and Enterprise keep the full history.
Slack and helpdesk support are listed on every plan. A dedicated account manager, call support, and engineering support are Enterprise only. CustomGPT states that support during the free trial is limited.
How much does CustomGPT cost in 2026?
CustomGPT costs $99 a month for Standard and $499 a month for Premium on monthly billing. Annual billing is 10% lower, at $89 and $449 a month. Enterprise is priced on request. All figures come from the CustomGPT.ai pricing page.
Plan | Monthly billing | Annual billing (per month) | Agents | Queries a month | Notable inclusions |
Standard | $99 | $89 | 10 | 1,000 | 5,000 documents per agent, 60 million words, 3 team members, RAG API, citations |
Premium | $499 | $449 | 25 | 5,000 | 20,000 documents per agent, 300 million words, 5 team members, website auto-sync, branding removal, PII anonymizer |
Enterprise | Custom | Custom | As needed | As needed | DPA, custom SSO, role-based access, AI model selector, dedicated account team |
Premium costs 5 times as much as Standard and includes 5 times the queries. There is no plan between them.
What does CustomGPT cost per year?
Annual billing saves $120 a year on Standard and $600 a year on Premium.
Plan | 12 months on monthly billing | 12 months on annual billing | Saving |
Standard | $1,188 | $1,068 | $120 |
Premium | $5,988 | $5,388 | $600 |
Does CustomGPT have a free plan or free trial?
CustomGPT has no free plan. It offers a 7-day free trial of the plan you pick at signup, and a credit card is required. When the trial ends, the card is charged for that plan unless you cancel from the billing page first.
What add-ons does CustomGPT charge for?
CustomGPT sells five add-ons. The prices below are the ones shown with monthly billing selected.
Add-on | Price | What it means |
Extra queries | $375 a month for 2,500 queries | $0.15 per query, against about $0.10 inside a plan |
Extra word storage | $300 a month for 300 million words | $1 per million words a month |
Extra documents | $100 a month for 100,000 documents | Raises monthly document processing |
Extra agents | $100 a month for 25 agents | $4 per extra agent a month |
Extra seats | $100 a month for 5 seats | $20 per extra team member a month |
Query limits are hard limits. CustomGPT states that when an account reaches its query limit, the agents stop responding to queries. When it reaches the word limit, the system stops indexing new data.
What does CustomGPT cost at your volume?
The table below does the math for five query volumes on monthly billing. It picks the cheapest setup at each volume and adds query packs at $375 for 2,500.
Queries used a month | Cheapest setup | Monthly cost | Cost per query |
1,000 | Standard | $99 | $0.099 |
2,500 | Standard + 1 query pack | $474 | $0.190 |
5,000 | Premium | $499 | $0.100 |
7,500 | Premium + 1 query pack | $874 | $0.117 |
10,000 | Premium + 2 query packs | $1,249 | $0.125 |
Standard plus one query pack covers 3,500 queries for $474 a month. Premium covers 5,000 queries for $499. For $25 more, Premium adds 1,500 queries, branding removal, and website auto-sync. Most teams above 1,000 queries a month should go straight to Premium.
How these prices compare across the category is in the AI chatbot pricing comparison.
What are CustomGPT's pros and cons?
Pros
- Wide format support. The pricing page lists 1,400+ document formats, plus YouTube, audio, and podcasts.
- Ten agents on the entry plan. Standard includes 10 agents, and 25 more cost $100 a month.
- Large storage. Standard holds 60 million words and Premium holds 300 million.
- Citations on every plan. Each answer can link to its source document.
- API on the entry plan. RAG API access is included in Standard.
- SOC2 Type 2 and GDPR on every plan. Neither is held back for Enterprise.
- A short commitment to test. The trial runs 7 days before the first charge.
Cons
- Low query allowance. Standard includes 1,000 queries a month for $99.
- Expensive overage. Extra queries cost $0.15 each, 50% more than the in-plan rate.
- A hard stop at the limit. Agents stop answering when the query limit is reached.
- Branding removal needs Premium. That is $400 a month more than Standard, or $4,800 over 12 months on monthly billing.
- No auto-sync on Standard. Website auto-sync starts on Premium.
- No model choice below Enterprise. The AI model selector is Enterprise only.
- DPA is Enterprise only. Standard and Premium do not list a data processing agreement.
- No free plan. The trial requires a credit card.
What do users say about CustomGPT?
CustomGPT holds 4.0 out of 5 on G2 from 1 review. The review is dated 3 October 2024 and comes from a verified user at a small non-profit.
That reviewer praised how easy it is to upload training material from almost any source. The same reviewer disliked that the agent did not remember earlier conversations.
One review is too small a base to rely on. CustomGPT publishes customer stories on its own site, and those are vendor-selected. Run the 7-day trial on your own content before judging answer quality.
Who should use CustomGPT?
CustomGPT is a good fit if you:
- Need several agents for different teams, clients, or document sets
- Hold content in many file formats, including video and audio
- Want citations on every answer for research or internal knowledge use
- Plan to build on a RAG API as well as a widget
- Expect fewer than 1,000 questions a month, or have the budget for Premium
CustomGPT is a poor fit if you:
- Run a public website chatbot that gets several thousand questions a month
- Need an unbranded widget on a budget under $499 a month
- Need content to re-sync automatically on an entry plan
- Need a signed DPA without an Enterprise contract
- Want a free plan to test on
What are the best CustomGPT alternatives?
The best CustomGPT alternative depends on why you are looking elsewhere. No tool here is best overall. Each row names the case it fits.
The ranking uses three criteria that match the limits above: how much usage the entry plan includes, what an unbranded widget costs, and whether a free option exists.
# | Tool | Best for | Starting price | Free option | Main trade-off |
1 | One customer service chatbot with human escalation and more monthly messages at a lower price | $59 a month, or $39 a month billed yearly, for 4k GPT-4.1-mini messages | 7-day trial, card required | 1 chatbot on Starter, far fewer file formats, no free plan | |
2 | A free plan and documentation bots with AI actions | $49 a month for 5k AI credits and 5k source pages | Free plan: 1 bot, 50 source pages, 100 AI credits | Unbranded widgets need the Business plan at $499 a month | |
3 | Actions, voice agents, and a built-in helpdesk on one platform | $40 a month for 700 message credits | Free plan: 50 message credits a month | 1 agent per plan, and removing the badge costs $99 a month |
SiteGPT is first because the two most common limits of CustomGPT Standard are the 1,000-query allowance and the $499 plan needed to remove branding. SiteGPT addresses both for a single customer service chatbot. CustomGPT remains the stronger pick for many agents and unusual file formats.
What does an unbranded widget cost on each tool?
An unbranded widget costs $499 a month on CustomGPT and $118 a month on SiteGPT, both on monthly billing.
Tool | Cheapest unbranded setup | Monthly cost on monthly billing | 12 months |
CustomGPT | Premium | $499 | $5,988 |
Starter ($59) + remove branding add-on ($59) | $118 | $1,416 | |
Chatbase | Hobby ($40) + remove badge add-on ($99) | $139 | $1,668 |
DocsBot | Business | $499 | $5,988 |
SiteGPT is $381 a month below CustomGPT Premium for an unbranded widget, which is 76% less. The plans are not equal in size. CustomGPT Premium includes 25 agents and 300 million words. SiteGPT Starter includes 1 chatbot and 1,000 pages.
CustomGPT vs SiteGPT: which one fits?
CustomGPT and SiteGPT both answer from your own content. CustomGPT is built for many agents and large document libraries. SiteGPT is built for customer service and lead generation on a website.
Criterion | CustomGPT | SiteGPT |
Entry price | $99 a month, or $89 a month billed annually | $59 a month, or $39 a month billed yearly |
Usage on the entry plan | 1,000 queries a month | 4k GPT-4.1-mini messages a month, or 400 GPT-4.1 messages |
Agents or chatbots | 10 on Standard, 25 on Premium | 1 on Starter, 2 on Growth, 3 on Scale |
Content limit | 5,000 documents per agent and 60 million words on Standard | 1,000 pages on Starter, 10,000 on Growth, 50,000 on Scale |
File formats | 1,400+ document formats, plus audio and video | CSV, TXT, PDF, DOCX, PPTX, and MD files, plus websites, YouTube, and cloud drives |
Content refresh | Website auto-sync from Premium | Manual on Starter, monthly on Growth, weekly plus a daily scan on Scale |
Human escalation | Not listed on the pricing page | Escalation to a human with team notifications on every plan |
Remove branding | Premium, $499 a month | Add-on, $59 a month or $39 a month billed yearly |
API access | Standard and above | Growth and above |
Signed DPA | Enterprise only | Enterprise only |
Free option | 7-day trial, card required | 7-day trial, card required |
Choose CustomGPT when you need many agents, video or audio sources, or an API on the entry plan. SiteGPT Starter has 1 chatbot, no API, and no chat integrations.
Choose SiteGPT when the job is one customer service chatbot with a human available. On annual billing, SiteGPT Starter costs $468 a year and CustomGPT Standard costs $1,068. That is $600 less, or 56%.
Queries and messages are different units, so estimate your volume in both before comparing. The full breakdown is in SiteGPT vs CustomGPT.
How to choose between CustomGPT and its alternatives
If you need... | Pick... | Why |
Ten or more agents on one plan | CustomGPT | Standard includes 10 agents and Premium includes 25 |
Training on video, audio, or unusual file formats | CustomGPT | It lists 1,400+ formats, YouTube, podcasts, and voice recordings |
An API on the entry plan | CustomGPT | RAG API access is included in Standard at $99 a month |
More than 1,000 questions a month under $150 | SiteGPT or DocsBot | SiteGPT Growth lists 10k messages at $129 a month. DocsBot Personal lists 5k AI credits at $49 |
An unbranded widget at the lowest monthly cost | SiteGPT | $118 a month on monthly billing, against $499 on CustomGPT |
A human to take over a chat | SiteGPT | Escalation with team notifications is on every plan |
A free plan to test on your own content | DocsBot or Chatbase | DocsBot gives 100 AI credits. Chatbase gives 50 message credits a month |
Voice agents or a built-in helpdesk | Chatbase | Both are listed from its Standard plan at $150 a month |
Frequently asked questions
Basics
What is CustomGPT?
CustomGPT is a no-code platform for building AI agents that answer from your own websites, documents, and media. Agents can be embedded on a website, deployed to Slack, or reached through a RAG API.
Is CustomGPT the same as a custom GPT in ChatGPT?
No. CustomGPT is a separate company and product. A custom GPT in ChatGPT is configured inside ChatGPT itself. CustomGPT runs on its own platform with its own plans, limits, and widgets.
How many languages does CustomGPT support?
CustomGPT lists multi-language support for 90+ languages on every plan.
Pricing and trial
How much does CustomGPT cost?
CustomGPT costs $99 a month for Standard and $499 a month for Premium on monthly billing. Annual billing is $89 and $449 a month. Enterprise pricing is custom.
Does CustomGPT have a free plan?
No. CustomGPT offers a 7-day free trial, and a credit card is required to start it. The card is charged for the chosen plan when the trial ends.
What happens when CustomGPT queries run out?
The agents stop responding to queries until the limit resets or you add capacity. The extra queries add-on costs $375 a month for 2,500 queries.
Does CustomGPT offer refunds?
CustomGPT states that refunds apply only to the current subscription charge. Overage charges from a prior month and additional charges are excluded.
Features and compliance
Can you remove CustomGPT branding?
Yes, on Premium and Enterprise. The Standard plan does not include removal of the Powered by CustomGPT badge.
Does CustomGPT have an API?
Yes. RAG API access is listed on the Standard plan and above.
Is CustomGPT GDPR compliant?
CustomGPT lists GDPR compliance and SOC2 Type 2 on every plan. A data processing agreement is listed on the Enterprise plan only.
Alternatives
What are the best CustomGPT alternatives?
SiteGPT fits one customer service chatbot with human escalation at a lower entry price. DocsBot fits teams that want a free plan. Chatbase fits teams that want actions, voice, and a built-in helpdesk.
Is there a cheaper alternative to CustomGPT?
Yes. Chatbase Hobby is $40 a month, DocsBot Personal is $49 a month, and SiteGPT Starter is $59 a month, all on monthly billing. Each includes 1 agent or chatbot, against 10 agents on CustomGPT Standard.
Sources
All pages opened on 5 October 2026.
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