7 best CustomGPT.ai alternatives in 2026 (free and paid)

CustomGPT.ai lets you build AI agents that answer from your own content, with source citations. It does that well for organizations with large document collections. For a small business that only needs an AI agent on its website, the price and plan structure are often the reason to look elsewhere.

A note before the list: we make intoCHAT, so it appears first. Facts about other tools come from their own pricing and product pages, checked on 6 October 2026, and every section lists real limitations, including ours.

Why people look for CustomGPT.ai alternatives

These are the most common reasons, all visible on the CustomGPT.ai pricing page:

• No free plan. There is a 7-day trial of the Standard plan, and it requires a credit card.
• Entry price. Standard costs $99 per month, or $89 per month billed annually.
• Query limits. Standard includes 1,000 queries per month. Extra queries come in packs, for example 2,500 queries for $375.
• Branding. Standard shows "Powered by CustomGPT.ai". White label starts with Premium at $499 per month.

CustomGPT.ai alternatives at a glance

Prices from each vendor's website on 6 October 2026, in the vendor's currency. "Starting price" is the cheapest paid plan. Prices change often, so confirm before you buy.

How we evaluated

We compared each tool on the points that usually decide a move away from CustomGPT.ai:

• Price per month and usage limits: messages, queries or credits included in the cheapest paid plan.
• Free plan or trial: whether you can test without a credit card.
• Knowledge sources: website crawling, file uploads and connectors.
• Channels: website only, or also WhatsApp and other messaging apps.
• Branding and API: whether you can remove the vendor branding and connect your own systems.

All facts come from each vendor's own pricing and product pages. We did not benchmark answer accuracy, so test the shortlisted tools on your own content.

The 7 best CustomGPT.ai alternatives in detail

1. intoCHAT

intoCHAT builds an AI agent from your own content and puts it on your website. You train it by crawling your site (up to 500 pages), uploading files such as PDF, DOCX or XLSX, and adding text snippets or Q&A pairs. One script tag adds the chat bubble, and there is an official WordPress plugin and a Shopify theme snippet.

Best for: Small businesses and shops that want a low-cost AI website agent with live product search.

Pricing (checked October 2026): Free: 1 agent, 25 messages/month. Starter: $19/month or $199/year, 3 agents, 2,500 messages/month. Pro: $49/month or $499/year, 10 agents, 10,000 messages/month. Enterprise: custom. Prices in USD. No free trial; you start on the free plan.

Strengths

• Connect your store: paste a shop URL and intoCHAT detects Shopify, WooCommerce, Magento, VTEX, WordPress or a custom site, then searches live products and shows product cards with image, price and link. No API keys or app install.
• AI is included in every plan. You pay by message volume, not per seat or for an AI add-on.
• A lead form in the chat (email and/or phone), email alerts to you and up to 5 more addresses, and CSV export.
• Custom API actions let the agent call your own HTTP API during a chat, up to 25 per agent.
• Answers stay grounded in your sources, the agent says when it doesn't know, and it replies in the visitor's language.

Limitations

• Website only: no WhatsApp, Messenger, Instagram, email or phone channel.
• No live chat or human handoff. When a visitor needs a person, the agent can collect an email or phone number so you can follow up.
• No team seats or roles, no public API, no webhooks or Zapier.
• Retraining is manual (no automatic re-sync), and the AI model is chosen and managed by intoCHAT.
• No certifications such as ISO 27001 or SOC 2, and no data-residency guarantee.

2. Chatbase

Chatbase builds AI agents trained on your data and deploys them to chat, email, voice, WhatsApp, Slack and more. Agents can run actions such as lookups and API calls, and hand conversations to human agents through helpdesk integrations.

Best for: Teams that want an AI agent builder with more channels and integrations than a website widget.

Pricing (checked October 2026): Free: 50 message credits/month, 1 agent, 1 seat; agents are deleted after 14 days of inactivity. Hobby: $40/month, 700 credits, 1 agent, 2 seats. Standard: $150/month, 4,000 credits, helpdesk, voice and API access. Pro: $500/month, 15,000 credits. 20% off with annual billing. Removing Chatbase branding is a $99/month add-on, and each extra agent costs $25/month. 7-day trial on paid plans.

Strengths

• Many channels and integrations, including WhatsApp, Slack and Zendesk.
• Voice, telephony, a helpdesk and API access from the Standard plan.
• Seats for a small team from Hobby upwards.

Limitations

• Credit-based: 700 credits on Hobby can go fast on a busy site.
• Helpdesk, voice and API start at $150/month.
• Removing the branding costs an extra $99/month.

3. SiteGPT

SiteGPT builds AI chatbots trained on your website pages. Higher plans connect to Slack, Messenger, Google Chat, Crisp, Freshdesk, Zoho SalesIQ and Zendesk, and WhatsApp is available as an add-on.

Best for: Businesses with large websites that want a trained chatbot and, later, helpdesk integrations.

Pricing (checked October 2026): Starter: $59/month ($39/month billed annually), 1 chatbot, up to 4,000 GPT-4.1-mini messages/month, 1,000 training pages, 1 team member. Growth: $129/month ($79 billed annually), 2 chatbots, API access. Scale: $429/month ($259 billed annually). Add-ons from $39/month each with annual billing: branding removal, WhatsApp, 5,000 extra messages. 7-day trial; credit card required.

Strengths

• High page limits for training: 1,000 pages on Starter, 10,000 on Growth.
• Helpdesk chat integrations on Growth and Scale.
• API access from Growth.

Limitations

• No free plan.
• Starter includes 1 chatbot, 1 team member and no integrations or API.
• WhatsApp and branding removal cost extra.

4. Chatling

Chatling is a no-code AI agent builder. Agents learn from a knowledge base, can run actions and workflows, and deploy on the web and, from the Starter plan, on WhatsApp, Instagram, Messenger and Telegram.

Best for: Small teams that want a low-cost no-code agent with live chat, workflows and messaging channels.

Pricing (checked October 2026): Free: 200 AI credits/month, 1 agent, 500,000 knowledge base characters. Starter: $25/month ($21 billed annually), 1,750 AI credits, 2 agents, 2 seats. Growth: $75/month ($63 billed annually), 6,000 credits. Scale: $295/month ($246 billed annually). Removing the branding is a $35/month add-on below Scale.

Strengths

• A free plan and a low paid entry price.
• Actions and workflows per agent, plus API access from Starter.
• Live chat with human handoff on every plan, and WhatsApp, Instagram, Messenger and Telegram from Starter.
• A choice of AI models.

Limitations

• Removing the Chatling branding is a $35/month add-on below Scale.
• Credit-based usage: stronger AI models use more credits per reply.
• Actions and workflows per agent are capped on lower plans.

5. Botpress

Botpress is a platform for building AI agents, with a visual studio, a natural-language builder, knowledge bases, tables and integrations with Intercom, Zendesk, HubSpot and Salesforce. It also offers Botpress Desk, an AI helpdesk, and a service in which its team builds the agent for you.

Best for: Teams with technical skills that want to design custom agent logic, or companies that want Botpress to build the agent for them.

Pricing (checked October 2026): Free: 100 conversations/month, 3 seats, 3 agents. Plus: $189/month or $150/month billed annually, 250 conversations included, then packs of 100 conversations for $65. Team: $939/month or $750/month billed annually, 1,500 conversations, unlimited seats. Enterprise: custom. AI (LLM) usage is included up to a set amount per plan.

Strengths

• A flexible builder for complex flows and integrations.
• A free plan for testing, and AI usage included in each plan up to a limit.
• Webchat and WhatsApp channels, with white-label webchat from Plus.

Limitations

• Conversation-based pricing: at 95% of your quota, a pack of 100 conversations ($65 on Plus) is added automatically.
• Building a good agent takes more time and skill than a no-code website bot.
• The voice channel is Enterprise only.

6. Voiceflow

Voiceflow is a platform for designing, testing and running AI agents across web chat, apps, WhatsApp, SMS and voice. It combines agentic playbooks with deterministic workflows, offers environments and LLM-based evaluations, and lets you choose between models such as GPT, Claude, Gemini, Llama and Grok, or bring your own.

Best for: Enterprise CX teams and agencies that need chat and voice agents with fine-grained control.

Pricing (checked October 2026): Not published on the website: businesses book a demo or request pricing, and agencies get a free trial with usage-based billing. According to Voiceflow's docs, there are Free, Pro, Business and Enterprise plans, and a bill combines a plan fee, add-ons such as editor seats and phone numbers, and credit-based usage. The Free plan has a one-time credit grant that does not renew.

Strengths

• Chat and voice agents from one platform.
• Model choice, including bring your own model.
• Workflows, environments and evaluations for teams that ship agents at scale.

Limitations

• No public price list, so costs are hard to compare.
• A steep learning curve if all you need is a website chatbot.
• The Free plan's credits don't renew, so it is for trying, not for production.

7. Tidio

Tidio combines live chat, a ticketing and email inbox, an AI agent called Lyro that answers from your knowledge base, and Flows for rule-based automation. It connects to Messenger, Instagram, WhatsApp and email.

Best for: Small businesses that want live chat and an AI agent in one tool, with a low entry price.

Pricing (checked October 2026): Free: 50 billable conversations, 10 seats, 50 Lyro AI conversations (one-off). Starter: $29/month or $24.17/month billed annually, 100 billable conversations. Growth: from $49.17/month billed annually. Plus: from $300/month. Lyro AI Agent add-on: from $39/month for 50 conversations ($32.50 billed annually). 7-day free trial, no credit card.

Strengths

• Free plan and a low starting price.
• Live chat and AI in one inbox, with handoff from Lyro to your team.
• Messenger, Instagram, WhatsApp and email integrations.
• Up to 10 seats on Free, Starter and Growth.

Limitations

• Two meters to watch: billable conversations on the plan and Lyro conversations on the add-on.
• The free Lyro allowance is one-off, not monthly.
• AI volume adds up: the Lyro add-on scales from 50 to 1,000 conversations a month, priced per tier.

When to stay with CustomGPT.ai

CustomGPT.ai is still the better choice if:

• You want answers with source citations and work with large document sets. Standard allows 5,000 documents per agent.
• You depend on connectors such as Google Drive, Notion, Confluence or Zendesk, or on SharePoint and auto-sync (Premium).
• You need API access, the SOC 2 Type 2 report the vendor states, or enterprise features such as SSO.
• You run many agents. Standard already includes 10.

How to switch from CustomGPT.ai

Your content is the main thing to move. Check which source types the new tool supports first.

1. List your sources. Note the sitemaps, files and connectors each agent uses.
2. Export what will not connect directly. intoCHAT supports website crawls (up to 500 URLs per crawl), file uploads, text snippets and Q&A pairs, but not Google Drive or Notion connectors. Export those documents as PDF, DOCX or Markdown.
3. Test with real questions. Ask the new agent the questions your visitors ask most and compare the answers with CustomGPT.ai.
4. Swap the embed code. Replace the CustomGPT.ai widget with the new one and cancel at the end of your billing period.

Try intoCHAT before you switch

If you need an AI agent on your website that answers from your content, captures leads and searches your products, intoCHAT starts at $19 per month and has a free plan. Read the full intoCHAT vs CustomGPT.ai comparison, or paste your URL into the free preview tool to chat with a temporary agent built from five of your pages.

When you are ready, create your agent free.