Each product was calling AI providers directly, duplicating prompts, leaking keys into clients and making cost impossible to track across 20+ domains.
The AI-powered solution
HN Group built a single gateway with server-side key custody, per-tenant quotas, streaming responses and automatic model fallback — designed, deployed and connected to its custom domain in under 36 hours.
Impact & results
Inference cost cut by 41%, p95 latency down to 780ms, and every new product ships AI features in hours instead of days.
Key features
Multi-model routing with automatic fallback
Streaming SSE responses
Per-tenant token quotas and budgets
Prompt template registry with versioning
Realtime usage analytics dashboard
Server-side key custody, zero client exposure
Technology stack
React
TanStack Start
Supabase
Edge Functions
Tailwind
AI Gateway
Live preview
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