Hire an AI agent that knows your business inside out.
ChatFast agents answer customers from your website, docs, and files, capture leads, and hand the rest to your team.
14-day free trial · No credit card required · One snippet to install
What it does
Every paid plan includes unlimited agents, so each job gets its own. Explore solutions
From your knowledge to a live agent in four steps.
- 01Connect
Add your knowledge.
Point the agent at your website, help center, PDFs, and files, then choose what it should answer, collect, and escalate.
The Northstar agent's knowledge: its website, help center, a pricing PDF, team Q&A, and a refund policy that is still indexing. - 02Test
Check answers before customers do.
Ask real support and sales questions in the playground, and correct anything that falls short.
A test question in the playground. The agent confirms the Business plan covers 42 agents with SSO, cites two sources, and offers buttons to approve or improve the answer. - 03Go live
Install one snippet.
The agent starts answering visitors and capturing the details your team needs to follow up.
The agent live on the Northstar pricing page. A visitor asks for a demo, the agent collects their work email, company, and team size in the chat, and the lead is emailed to the sales team. - 04Improve
Learn from real conversations.
See what customers ask, where answers were weak, and who left their details, then strengthen the knowledge behind them.
Insights for the last 30 days: 1,284 conversations, 96 contacts captured, a rising daily conversation chart, and three questions the agent answered with low confidence.
Accurate first. Then useful.
Your documents and conversations are never used to train or fine-tune foundation models.
Knows your whole business
Learns from your website, help center, PDFs, and files, including scanned documents, and stays current when you re-index them.
Answers from your sources
Every answer comes from the content you connect. When the answer is not there, the agent says so instead of guessing.
Takes the next step
Collects contact details and form fields in the chat, then sends an email, calls your API, or notifies your webhook.
Hands off to your team
When a person is needed, AI replies stop and the conversation reaches your inbox with the full transcript attached.
What can a ChatFast agent do?
It answers questions from the website, help center, PDFs, and files you connect. In the same conversation it can collect contact details and form fields, send an email, call your API, or open a link, and it hands off to your team when a person is needed.
What happens when the agent gets an answer wrong?
Correct it once and the correction holds. Find the conversation, then add a Q&A entry that pairs the question with the exact reply you want. The agent uses that entry from then on, and you decide what it says when a question falls outside your sources.
How does the agent stay current when our pricing or policies change?
Update the page or document, then re-index that source. The agent answers from the new version. For details that are not written down anywhere, add a Q&A entry.
Does it replace our support team?
No. The agent handles the repetitive questions and passes everything else to a person. When it hands off, AI replies stop and the conversation, transcript, and any captured contact details arrive in your team inbox.
Is our content used to train AI models?
No. We do not train or fine-tune foundation models on your documents, your messages, or any other data in your workspace. It is used only to power your own agents.
What does it cost as conversations grow?
Each message a customer sends uses credits: 10 with Standard reasoning, or 25 with Advanced reasoning on the Elite plan. Cost follows real conversation volume, and you can limit how many messages one visitor sends within a set time.
Which AI models power the agent?
ChatFast routes each request to a leading model, including Claude, GPT, Gemini, and Grok, so you never manage models yourself. You choose the reasoning level for each agent: Standard or Advanced.
Can the agent reply in other languages?
Yes. The agent replies in the language the customer writes in, or you can pin one language for every conversation.
Put your first AI agent to work.
Start free for 14 days. No credit card required.