ChatFast builds AI agents that answer questions by reasoning across a company’s connected sources, its website, help center, PDFs, files and a Q&A library, rather than matching keywords to a canned reply. An agent resolves complex, multi-part questions, collects the specific details a team needs while a visitor is still engaged, and hands off anything it cannot answer to a person with the full conversation transcript attached. It routes each request to whichever underlying model, including Claude, GPT, Gemini or Grok, suits that request best, replies in whatever language the visitor writes in, and the company states its agents reach 94 percent response accuracy against a 48 percent baseline for a traditional keyword-matching chatbot on the same knowledge base, alongside a stated 82 percent customer retention rate.
An agent answers only from the sources a team connects and indexes, so its accuracy depends entirely on how complete and current those sources are kept; the company’s own FAQ addresses this by having a team re-index a source after updating it and add a direct Q&A entry for anything not documented anywhere else. The company states customer knowledge-base content is never used to train or fine-tune its underlying AI models, which is worth confirming still holds for any account handling sensitive customer data.
Trial is free for 14 days with no credit card, covering 1 agent, 1,000 credits and 5 MB storage. Basic is $35 a month for unlimited agents, 3,000 credits a month and 50 MB storage. Premium is $100 a month for 10,000 credits and 500 MB storage, the most popular tier. Elite is $325 a month for 35,000 credits, advanced reasoning mode, 5 GB storage, no ChatFast branding and priority 24-hour-SLA email support. Enterprise is custom-priced with a dedicated customer success manager. Credits are spent per user message, 10 for standard reasoning and 25 for advanced reasoning on the Elite plan.
