Hosting your own chatbot LLM on the RTX 5060 Ti 16GB at our hosting gives you predictable costs, full control of safety filters, and no rate-limit surprises.
Contents
Why Self-Host
- No per-message fees – flat monthly cost
- Full control of system prompts, safety layers, personalities
- Chat history stays on your box – simpler compliance
- Custom fine-tune (via LoRA) for domain voice
- UK jurisdiction for data (we host in London)
Recommended Stack
LLM: vLLM + Llama 3.1 8B FP8 (port 8000)
Cache: Redis for session state
API: FastAPI + Server-Sent Events streaming
Front: Any - web, mobile, Slack, Telegram, DiscordEnable prefix caching for your system prompt – massive TTFT win on multi-turn chat.
Latency Numbers
| Metric | Target | Achieved (tuned) |
|---|---|---|
| TTFT (cached prefix) | < 200 ms | 60-80 ms |
| TTFT (fresh prompt) | < 800 ms | 180-400 ms |
| Decode (per user) | > 30 t/s | 40-64 t/s |
| End-to-end chat latency | < 5 s | ~2-3 s |
Capacity
- Llama 3.1 8B FP8 + FP8 KV + prefix caching + chunked prefill: comfortably serves 16 active chat sessions
- MAU at 10% active: ~160
- Phi-3-mini for light tasks: 60+ active sessions, 600+ MAU
Reliability
- Run vLLM via systemd with
Restart=on-failure– see vLLM setup guide - Monitor VRAM, p99 latency, queue depth via Prometheus
- Have a fallback mini-model (Phi-3) on standby if main model OOMs
- Store chat history in Redis with TTL for crash recovery
Chatbot Backend on Blackwell 16GB
Self-hosted, UK jurisdiction, predictable cost. UK dedicated hosting.
Order the RTX 5060 Ti 16GBSee also: chatbot hosting guide, customer support, prefix caching, concurrent users, FP8 deployment.
