# MODEL-REFERENCE.md - Verified Model Strings

**Last verified:** 2026-02-01

## ✅ Working Models (copy-paste exactly)

| Model | String | Use Case |
|-------|--------|----------|
| **Opus 4.5** | `anthropic/claude-opus-4-5` | Complex reasoning, deep analysis |
| **Sonnet 4** | `anthropic/claude-sonnet-4-20250514` | Daily work, fast + capable |

## 🚫 DO NOT USE (discontinued/wrong)

- `claude-3-opus-20240229` ❌ Discontinued
- `claude-3-5-sonnet-20241022` ❌ Wrong format
- `anthropic/claude-sonnet-4.5-20241022` ❌ Doesn't exist
- `anthropic/claude-3-5-sonnet-20241022` ❌ Wrong format

## Switching Commands

**Via chat:**
- `/model anthropic/claude-opus-4-5`
- `/model anthropic/claude-sonnet-4-20250514`

**Via slash command:**
- `/switch to opus` → should resolve to opus-4-5
- `/switch to sonnet` → should resolve to sonnet-4

## ⛔ RULE FOR KITT

**Before claiming a model doesn't exist or modifying config:**
1. Check this file first
2. If user says a model exists and it's not here → ASK, don't deny
3. NEVER add model strings to config without verification
4. When uncertain → try the model string, don't guess

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*Update this file when new models are confirmed working.*