CustomGPT.ai
Builds a ChatGPT-powered assistant trained on your business documents and websites.
Overview
CustomGPT.ai lets businesses ingest PDFs, documents, websites, and other sources to build a knowledge-grounded AI chatbot. The chatbot answers questions using only the provided content, which reduces hallucinations and keeps responses on-topic. It can be embedded as a widget, accessed via API, or used internally as a search assistant. CustomGPT.ai suits teams that want a reliable answer bot without building an LLM pipeline from scratch.
Key features
- Multi-source ingestion (PDFs, URLs, YouTube, sitemaps)
- Widget and API deployment
- Custom persona and instructions
- Citation of source documents in answers
- Usage analytics
- GDPR-friendly data handling options
Pricing
- Pricing model
- Subscription
- Monthly
- From $99/month
- Yearly
- $1068/year billed annually
- Free plan
- No
- Free trial
- Yes
- Last verified
- Checked October 4, 2026
Pros
- Grounds answers in uploaded documents, which reduces hallucinations
- Easy setup with no coding required
- Source citations help users verify answers
Cons
- Knowledge quality depends on the completeness of ingested content
- Conversation credits can run out quickly on lower plans
Who should use it
- Building a chatbot grounded in your own documentation or knowledge base
- Reducing support questions with an always-on AI assistant
- Teams that need a reliable on-topic chatbot without model fine-tuning
Beginner, Intermediate · Individuals, Small teams, Mid-size teams
Who shouldn't
- Full ticketing and agent workflow management
- Voice or phone support channels
Facts
- Category
- AI customer support
- Platforms
- Web, API
- Integrations
- WordPress, Shopify, Slack, Zapier
- API
- Available
- Skill level
- Beginner, Intermediate
- Team size
- Individuals, Small teams, Mid-size teams
- Data and privacy
- CustomGPT.ai offers GDPR-compliant data handling and does not use customer data to train shared models.
Alternatives
- ChatbaseAI customer support
Build a custom AI chatbot trained on your own documents, URLs, or knowledge base content.
From $40/month - SiteGPTAI customer support
Train a chatbot on your website content and deploy it as a widget with no coding required.
From $59/monthNot yet verified - VoiceflowAI customer support
Visual platform for designing and deploying AI chat and voice agents without heavy coding.
Pricing information is currently unavailable.Not yet verified - BotpressAI customer support
Open-source conversational AI platform for developers building chatbots and voice agents.
From $150/month, billed annually
Frequently asked questions
How much does CustomGPT.ai cost?
From $99/month. $1068/year billed annually. Checked October 4, 2026.
Does CustomGPT.ai have a free plan?
CustomGPT.ai has no permanent free plan on record, but it offers a free trial.
Who is CustomGPT.ai best for?
Building a chatbot grounded in your own documentation or knowledge base; Reducing support questions with an always-on AI assistant; Teams that need a reliable on-topic chatbot without model fine-tuning.
Which platforms does CustomGPT.ai run on?
Web, API.
Does CustomGPT.ai have an API?
Yes, CustomGPT.ai offers an API.
What are the alternatives to CustomGPT.ai?
Tools often weighed against CustomGPT.ai include Chatbase, SiteGPT, Voiceflow, Botpress.