Embed OpenAI Agents on your site
Send and receive unlimited messages for free.
Powered by OpenAI's ChatKit platform.
100% Free
Built on top of OpenAI's ChatKit platform
ReplyTag makes it easy to embed OpenAI's ChatKit platform on your website.
This means that, unlike other platforms, you get the following out of the box:
- Unlimited messages — use your own API key
- No vendor lock‑in. When you want to migrate, you can self‑host ChatKit yourself.
- Strict privacy. We don't store messages on our servers—we stream them directly from OpenAI
ReplyTag is also free. Since we don't pay for or mark up AI tokens, you don't need to pay us anything.
Send unlimited messages. Pay only for what you use, directly to OpenAI.
Zero Markup
Pay only for what you use, directly to OpenAI.
Unlimited messages
Send unlimited messages for free and forever.
10,000 Files
Upload up to 10,000 files to train your assistant on your site and data.
Choose your model
Set up your model directly in the OpenAI agent dashboard.
Built for speed
Incredibly fast—requests go directly to OpenAI
Embed on any website
Embed our widget on your website in 30 seconds.
Multiple modes to fit your site perfectly
Chat Widget
Embed the assistant as a standard chat widget
Modal Widget
Embed the assistant as a modal pop-up widget
Embed in‑page
Embed the widget directly inside a blog post or page
Works with any site builder or custom code
Privacy‑first by design
We don’t store your messages. Conversations stream directly between your site and OpenAI. No secondary training, no resale, and no content analytics—just fast, private replies.
- ✓Zero message retention on our servers
- ✓Files are hosted by OpenAI API and stays yours
- ✓Migrate away and delete your account easily
Why is it free? What's the catch?
Unlike most competitors, we don't mark up OpenAI prices. You simply pay for what you use, directly to them. This is fair to you and doesn't cost us.
Optionally, you can upgrade to unlock features like removing branding; however, sending and receiving messages will always be free and unlimited.
We plan to monetize the platform by allowing agencies to create sub accounts for their clients.
How can I train it?
You can upload up to 10,000 files. These can be PDFs, docs, Markdown, or any content related to your business.
The assistant will parse them and look for answers in those files when it receives a question.
Do I need an OpenAI account?
Yes. Because we're built on their platform, you'll need to connect your OpenAI API key.
The good news: Even if you delete your account with us, you'll keep your trained assistant!
What if I need a custom feature?
Reach out—most likely we can help.
Are you affiliated with OpenAI?
Nope! We are an independent service built on top of OpenAI's ChatKit platform.
Can I try it?
Absolutely! Sign up and use it for free as much as you want!