ChatFast

ChatFast takes a different approach from most chatbot builders. Instead of wrapping a generic LLM with a Q&A widget, it first cleans and indexes your knowledge base, then uses agentic retrieval to find evidence before answering. This directly addresses the hallucination problem in production support. We'd reach for this when the query set involves nested policies, changing documentation, or large corpora. The live trace and citation display are not just nice-to-haves—they are essential for compliance-heavy teams or customer-facing bots where unverified answers cost trust. Where it bites: credits can run quickly if you have high traffic. At 10 credits per standard user message, 3,000 credits gives you only 300 conversations. Storage caps (5 MB on trial, 50 MB on Basic) limit the size of your knowledge base. For a help center with dozens of pages, 50 MB may be tight. Compared to alternatives like Intercom's Fin or Zendesk's Answer Bot, ChatFast offers more transparency but fewer out-of-the-box CRM integrations. It is not a plug-and-play widget for hobby sites. It's for teams willing to invest in ingestion to get reliable answers. In practice, the 14-day free trial is generous—enough to test with your own data. The Elite tier's advanced reasoning mode adds cost per message (25 credits vs 10), so budget accordingly for complex queries. Overall, ChatFast is a niche product with a clear value prop: reliability over simplicity. If trust and traceability matter more than a five-minute setup, it's worth the investment.