The best free AI chatbot for your website in 2026
The best free website chatbot isn't the one with the longest feature list — it's the one you can actually ship today: added in a single line, trained on your whole sitemap, capturing leads, and not metering every message. Most "free" bots fail one of those (trial caps, credit meters, 14-day deletion). Here's what to look for, and how CodeBurst hits all four.
What "best free" should actually mean
- One-line install — a script tag, not a backend project.
- Trains on your real content — import a URL or sitemap, auto-indexed for retrieval.
- Captures leads — names, emails, intent, out of the box.
- No per-message meter — "free" shouldn't mean 50 messages then a paywall, or a bot deleted after two idle weeks.
The catch in most "free" plans
Read the fine print and most free chatbots are trials: one popular tool gives 50 message credits/month and deletes your bot after 14 days of inactivity; another spends a credit on every reply across $39–199/mo tiers. You can ship a demo, but not run a real bot for free.
How CodeBurst does it
| What you want | CodeBurst |
|---|---|
| One-line install | A single <script> tag |
| Train on your site | URL or whole sitemap → auto-indexed |
| Lead capture | Built in |
| Per-message meter | None — runs on its own free multi-model routing |
| Bundled stack | Free multi-model API + embeddings + audio, same account |
| Scale path | Bring-your-own-key (no markup) or credits when you grow |
Add it in 60 seconds
<script src="https://codeburst.ai/greeterbot.js" data-bot-id="YOUR_BOT_ID"></script>Paste it before </body>, point the bot at your URL or sitemap, and it indexes your pages and starts answering — capturing leads as it goes.
Get started
Add the free chatbot Chatbase alternative →FAQ
What's the best free AI chatbot for a website?
One that installs in a line, trains on your sitemap, captures leads, and doesn't meter messages — what CodeBurst is built for.
Is it actually free or a trial?
Free to start with no per-message meter; scale via BYOK (no markup) when you grow — not a 50-message trial.
Can it learn my site?
Yes — import a URL or sitemap and it auto-indexes for retrieval.