# AI Model Chain — IT Pro Partner

**Updated:** July 24, 2026
**Active Policy:** Cost-Controlled Multi-Tier Fallback Chain

## Chain Configuration

| Tier | Model | Provider | Key / Endpoint | Notes |
|---|---|---|---|---|
| **Primary** | `claude-sonnet-5` | `admin-ai` | `~/.secure/hermes-normal-ops-key.json` | Main conductor via LiteLLM ($3.33/day cap) |
| **Fallback 1** | `deepseek-v4-pro` | `admin-ai` | `~/.secure/hermes-normal-ops-key.json` | Primary workhorse fallback on admin-ai |
| **Fallback 2** | `deepseek-v4-flash` | `admin-ai` | `~/.secure/hermes-normal-ops-key.json` | Fast low-cost fallback on admin-ai |
| **Fallback 3** | `deepseek-chat` | `deepseek` | Direct DeepSeek API Key | Independent provider (survives admin-ai outage) |
| **Fallback 4** | `grok-2-1212` | `xai` | Direct xAI API Key | Independent provider (survives admin-ai outage) |

## Admin-AI Proxy (LiteLLM)
- **URL**: `https://admin-ai.itpropartner.com/v1` (app1, `152.53.36.131`)
- **Master Key**: `/root/docker/litellm/.env` on app1 (Hudu [178] LiteLLM Master Key)
- **Hermes Virtual Key**: `hermes-normal-ops-daily-capped` (`~/.secure/hermes-normal-ops-key.json`)
- **Daily Budget Cap**: $3.33/day ($100/30-day cap)

## Delegation Subagents
- **Model**: `deepseek-v4-pro` via `admin-ai`
- **Fallback**: `deepseek-v4-flash` via `admin-ai`

## Excluded from Production Routing
- **Gemini / Ollama**: Excluded from normal production routing per policy.
- **GPT-5.6 / Terra / Opus**: Escalation-only, requires explicit approval and user confirmation.