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CustomGPT Alternative: Free Plan, Real Model Choice, Built-in Live Chat

Looking for a CustomGPT alternative? SiteSpeakAI starts at $29/month with a free plan (CustomGPT is trial-only), built-in live chat and human handoff, and full model choice instead of being locked to one model.

Last updated: July 15, 2026

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TL;DR

CustomGPT starts at $99/month with no free plan, locks its Standard tier to a single model, and routes human handoff into your existing helpdesk. SiteSpeakAI starts at $29/month with a free plan, model choice across OpenAI, Anthropic, Google, and xAI, and a built-in inbox for live chat and human takeover.

The best CustomGPT alternatives, ranked

We compared the top CustomGPT alternatives on price, live chat, human handoff, and AI model choice. Here is how they stack up.

1

SiteSpeakAI

Free plan, built-in live chat and human handoff, model choice across OpenAI, Anthropic, Google, and xAI, plus free sentiment analysis and the ability to connect your own API or database. From $29/mo.
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2

Chatling

No-code chatbot with a free plan and handoff, but no API/database connect or bring-your-own-keys. From $40/mo.

3

Botsonic

Low entry price, but live handoff needs an external helpdesk and API access is a paid add-on. From $19/mo.

4

Salesloft Drift

Enterprise-only chat with recent multi-week outages and an uncertain roadmap post-acquisition. Custom pricing.

5

Wonderchat

Website- and doc-trained chatbot with steep pricing tiers. From $124/mo.

Why people look for CustomGPT alternatives

CustomGPT is known for accurate, source-cited answers, but it asks for a premium price and locks down a few things teams expect.

No free plan on CustomGPT

CustomGPT only offers a 7-day trial that requires a card. SiteSpeakAI has a free plan, so you can build and test a chatbot before paying anything.

Real model choice, not one locked model

CustomGPT’s Standard plan is locked to a single model and only lets you customize the model per agent on its Enterprise plan. SiteSpeakAI lets you pick from OpenAI, Anthropic, Google, and xAI, with BYOK on Pro.

Built-in live chat and human takeover

CustomGPT routes handoff into the external helpdesk queue your team already uses. SiteSpeakAI includes its own inbox so a human can take over a live conversation without a separate tool.

SiteSpeakAI vs CustomGPT

Compare features and see why SiteSpeakAI is the better choice

Features SiteSpeakAI CustomGPT
Free Plan ✓ Yes × No (7-day trial only)
Starting Price From $29/month From $99/month
AI Models OpenAI, Anthropic, Google, xAI OpenAI, Anthropic, Google
Per-agent Model Choice ✓ Yes Enterprise only
Built-in Live Chat ✓ Yes ✓ Yes
Native Human Takeover ✓ Yes × No (routes to external helpdesk)
API Access ✓ Yes ✓ Yes
Multilingual ✓ Yes ✓ Yes (92 languages)
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How to switch from CustomGPT to SiteSpeakAI

A simple step-by-step guide to migrate without losing conversations.

1

List your CustomGPT training sources

Note the URLs, documents, and PDFs your CustomGPT project was trained on. SiteSpeakAI can re-crawl the same sources directly.

2

Create your SiteSpeakAI chatbot

Sign up for the free plan, create a chatbot, and paste your website URL as the first training source. The crawler indexes reachable pages automatically.

3

Add supplementary sources

Upload the same files you used in CustomGPT. Connect your own API or database if you want the chatbot to fetch live data, not just answer from static content.

4

Pick your model and tone

Choose your AI model, customize the widget colors and avatar, and set the bot persona and fallback message.

5

Swap the embed code on your site

Replace the CustomGPT embed with the single-line SiteSpeakAI snippet. AI chat, live chat, and the inbox all activate from the one snippet.

6

Cancel CustomGPT

Once the new chatbot is validated, cancel your CustomGPT subscription. Most teams drop from $99/month to $29/month on the base tier.

Choose the model that fits each chatbot

SiteSpeakAI lets you pick from OpenAI, Anthropic, Google, and xAI models, and bring your own keys on the Pro plan. Instead of being locked to one model, you can choose the one that gives the best answers for your content and budget.

Will Guthrie

Digital Marketing Manager

The platform is very intuitive to set up and use. I was able to train the chatbot directly from our site maps with ease. After creating a test page and sharing it with leadership, customer service, sales, and marketing, the reaction was unanimous, everyone was impressed!

Built-in live chat and human takeover

SiteSpeakAI includes a full inbox where a human can step into a live conversation when the AI needs help. There is no external helpdesk to wire up, the handoff happens inside the same tool your visitors are already chatting in.

Marty Englander

Marketer

I think SiteSpeak is a super easy and extremely powerful tool to start installing into your website.

Train your chatbot on all of your content

Train SiteSpeakAI on your website, knowledge base, support docs, PDFs, and CSVs, and connect your own API or database for live data, so answers stay grounded in your real information.

Dave Strand

Founder

I stumbled across SiteSpeak AI while having a chat with my ChatGPT. I am absolutely gobsmacked at how good it is and how easy it has been to setup. Any concerns I had have disappeared and this certainly is the way forward. I will be using SiteSpeak AI on all my websites now.

Frequently asked questions

Everything you need to know about SiteSpeakAI. Can’t find what you’re looking for? Start a free trial and see it in action.

What is the best alternative to CustomGPT?
SiteSpeakAI is a strong CustomGPT alternative for teams that want a free plan, a lower price, real model choice, and a built-in inbox for live chat and human takeover. Both products ground answers in your own content with source citations.
SiteSpeakAI starts at $29/month with a free plan. CustomGPT starts at $99/month ($89/month billed annually) with no free plan, only a 7-day trial. SiteSpeakAI Pro is $79/month and adds all models, BYOK, and API and MCP access.
Yes. SiteSpeakAI lets you pick from OpenAI, Anthropic, Google, and xAI, with bring-your-own-keys on the Pro plan. CustomGPT’s Standard plan is locked to a single model, and per-agent model choice is reserved for its Enterprise plan.
Yes. SiteSpeakAI includes its own inbox where a human agent can take over a live conversation. CustomGPT hands conversations off into the external helpdesk queue your team already uses, rather than a built-in agent inbox.
Yes. Add the same website URLs, documents, and PDFs you used to train CustomGPT, and SiteSpeakAI will crawl and index them automatically.

CustomGPT vs SiteSpeakAI

CustomGPT has built a reputation for accurate, source-cited answers and strong anti-hallucination handling. If citation accuracy is your single priority and budget is not a constraint, it is a respected option. SiteSpeakAI also grounds answers in your own content and cites sources, using retrieval with reranking, and it does so at a lower price with fewer restrictions.

The practical differences show up in three places: the free plan, model choice, and human handoff.

Free plan, price, and model choice

CustomGPT has no free plan, only a 7-day trial that needs a card, and starts at $99/month. SiteSpeakAI has a free plan and starts at $29/month, so you can build and test on a real site before paying.

Model choice is the other gap. CustomGPT’s Standard plan is locked to a single model, and choosing the model per agent is reserved for its Enterprise tier. SiteSpeakAI lets you pick from OpenAI, Anthropic, Google, and xAI on paid plans, and bring your own keys on Pro.

Human handoff

When a conversation needs a person, CustomGPT routes it into the external helpdesk queue your team already runs. That works if you already pay for a helpdesk, but it means another tool in the loop. SiteSpeakAI includes its own inbox, so a human can take over the live conversation in the same place your visitors are chatting.

For teams that want grounded answers plus a free plan, real model choice, and built-in live chat, SiteSpeakAI covers more of the job for less.

Connects with the tools you already use

From your website builder to your CRM, SiteSpeak fits right in.