# AI Model Chain — IT Pro Partner

**Updated:** July 21, 2026
**Sanitized:** July 23, 2026 (plaintext keys removed)
**Gateways:** admin-ai (self-hosted LiteLLM), OpenRouter, DeepSeek, Google, xAI

## Chain

| # | Model | Provider | Key Storage |
|---|---|---|---|
| Primary | GPT-5.5 | admin-ai | Hudu [126] Hermes Primary Key |
| F1 | GPT-5.5 | OpenRouter | Hudu [153] |
| F2 | DeepSeek v4 Pro | DeepSeek | Hudu [152] |
| F3 | Gemini 3.5 Flash | Google | Hudu [161] / [151] |
| F4 | Grok 4.5 | xAI | Hudu [154] |

## Admin-AI (LiteLLM)
- URL: `admin-ai.itpropartner.com` (app1, 152.53.36.131)
- Master key: `/root/docker/litellm/.env` on app1 (Hudu [178] LiteLLM Master Key)
- Hermes virtual key: Hudu [126] Hermes Primary Key (GPT-5.5 + DeepSeek v4 Pro routing)

## Credential Storage
- Config: `/root/.hermes/config.yaml`
- Hudu: All API assets under layout 49 at https://hudu.itpropartner.com — search "AI Provider" or by model name
- Git: `itpp-infrastructure/docs/model-chain.md` (this file, sanitized)
- Full inventory: `itpp-infrastructure/docs/key-inventory.md`