### What happened?

`model_prices_and_context_window.json` has no **undated** Azure aliases for the audio models:

- `azure/gpt-audio-mini` — missing (only `azure/gpt-audio-mini-2025-10-06` exists) - `azure/gpt-realtime-mini` — missing (only `azure/gpt-realtime-mini-2025-10-06` exists)

The OpenAI provider has undated aliases for both (`gpt-audio-mini`, `gpt-realtime-mini`), and Azure deployments are commonly created against the undated model name — so `base_model: azure/gpt-audio-mini` (as the cost-tracking docs recommend) resolves to nothing. Depending on version/fallback path this yields either "model isn't mapped" or partial resolution where **text tokens bill at $0** while audio tokens bill correctly (observed on 1.92.0 in production; we carry per-deployment custom pricing as a workaround).

### Proposed fix

Add `azure/gpt-audio-mini` and `azure/gpt-realtime-mini` entries mirroring their `-2025-10-06` dated variants (input $0.60/M, output $2.40/M, audio $10/$20 per M), exactly as the undated OpenAI aliases mirror their newest dated variant. PR incoming.

### Version

ghcr.io/berriai/litellm:1.92.0; keys still absent on litellm_oss_daily_2026_07_13 (10d5804b3e)