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Case Study: Support Bots
Production Customer Support Agent
Customer support is the #1 agent use case. Architecture handling 50,000+ conversations/month.
System Architecture
┌─────────────────────────────────────────┐ │ CUSTOMER SUPPORT AGENT │ ├─────────────────────────────────────────┤ │ Router (Haiku) → Intent Classification │ ├─────────────────────────────────────────┤ │ │ FAQ (Haiku) │ Billing (Sonnet) │ │ │ │ + KB Search │ + DB Lookup │ │ │ │ │ + HITL for refunds│ │ ├─────────────────────────────────────────┤ │ Sentiment Monitor (every response) │ │ Auto-escalate if frustration > 0.7 │ └─────────────────────────────────────────┘
Key Metrics After 6 Months
| Metric | Before | After | Change |
|---|---|---|---|
| Response Time | 4 hours | 12 seconds | -99.9% |
| Resolution Rate | 0% | 72% | +72% |
| Customer Satisfaction | 3.2/5 | 4.1/5 | +28% |
| Cost Per Ticket | $12 | $0.35 | -97% |
| Monthly API Cost | N/A | $4,200 | N/A |
Architecture Decisions
- Intent Router (Haiku): $0.001/query, saves 60-80% vs Sonnet for everything.
- Model by Intent: FAQs use Haiku (cheap). Billing uses Sonnet (reasoning).
- Sentiment Monitor: Background classifier, auto-escalates frustrated customers.
- HITL for Refunds: Money actions require human approval - non-negotiable.
💰 Cost Breakdown: 50K conversations/mo: Router $50 | FAQ Agent $500 | Billing $3,000 | Sentiment $650 | Total: ~$4,200/mo vs $600K/yr for human agents.
SYNAPSE VERIFICATION
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Why use Haiku for intent routing?
Haiku is smarter
Intent classification is simple - Haiku costs 20x less and is fast enough
Sonnet can't classify
Image processing