Cresta

Cresta sits in the contact-centre stack, not on your desktop. It listens to live customer calls and surfaces answers, scripts, and next-best-action prompts to human agents in real time. The autonomy here is narrow but useful: the system decides when to interrupt, what knowledge to surface, and which coaching nudges matter for the call in progress. You are not prompting it per query; it runs continuously in the background. The killer feature is the knowledge agent. It ingests your internal docs, past tickets, and product guides, then watches the conversation unfold. When a customer asks about a refund policy or a technical spec, Cresta pushes the relevant snippet to the agent's screen before they finish typing a search query. This beats a standard chatbot because the AI is contextually aware of tone, urgency, and conversation history. I have seen it catch edge-case questions that would have required three Slack messages and a supervisor escalation. The coaching layer tracks adherence to scripts, flags compliance risks, and scores call quality automatically. Managers get a dashboard of who is struggling with objection handling or who keeps forgetting the upsell prompt. The QA automation is genuinely useful if you run a large team; manual call reviews do not scale past a few dozen agents. Failure modes: Cresta depends entirely on the quality of your knowledge base. If your docs are stale or contradictory, the agent will surface garbage. The system also struggles with highly technical B2B calls where jargon shifts between customers. I have seen it suggest answers that were technically correct but tonally wrong for the situation. The real-time assist can feel intrusive to experienced agents who do not want a screen full of pop-ups. Nearest competitor is Observe.AI, which focuses more on post-call analytics and less on live intervention. Cresta is better if you want in-the-moment guidance; Observe is better if you want deep forensic analysis of call patterns. Both are enterprise-only and require integration work. Concrete workflow: A SaaS support team uses Cresta to handle billing questions. The agent hears 'I was charged twice', and Cresta immediately surfaces the refund SOP, the billing system link, and a script for de-escalation. The agent resolves the call in three minutes instead of seven. Multiply that across a hundred calls a day and the ROI is obvious.