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AI Agents7 min

AI support agents: where they work and where they don't

An honest breakdown of scenarios where AI agents save money and the ones where they break the customer experience.

Olga PetrenkoMarch 12, 2026

Over two years of building AI support agents we've seen both 400% six-month ROI cases and failures that cost a client 8% of their customer base in churn. The difference always comes down to one thing: was the scenario chosen correctly.

Where AI agents reliably outperform humans

  • FAQs and common ops — order status, re-shipment, password reset
  • Scenarios with a clean API: ticket creation, bookings, access grants
  • Night support and markets outside your primary time zone
  • First-line triage: classification and routing to the right team

Where AI breaks the experience

  1. 01Conflict conversations — refunds, complaints, legal questions
  2. 02Cross-domain tasks where the answer depends on 3+ systems without a unified API
  3. 03Markets where the customer expects a personal touch (B2B enterprise with €100k+ contracts)
  4. 04Cases where the cost of a single mistake exceeds the agent's annual savings
The best AI support agents are the ones that know when to hand off to a human. We always design escalation logic in sprint one.

How to measure success

  • Containment rate — share of conversations the agent closes without handoff
  • CSAT separately for AI and human conversations — compare, don't blend
  • First response time (FRT) and time to resolution (TTR)
  • Cost per resolved case — the metric your CFO cares about

What it costs to launch

A pilot connected to one system (e.g. Zendesk + knowledge base) takes 6–10 weeks and €25,000–€45,000. ROI typically lands in 5–9 months with a containment rate above 50%. If your traffic is below 3,000 requests per month the economics don't work — don't start.

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