The first audio deploy proved the config and the cost-calculator patch were both
live — /model/info served input_cost_per_request, and the build log confirmed
'[coop-patch] applied' — yet a real /v1/audio/speech and
/v1/audio/transcriptions pair still billed exactly $0.000000, with no spend row
anywhere. Diagnosis: the audio cost paths resolve pricing from the SHARED
cost-map key, and the router strips per-deployment pricing from that key, so the
lookup raises and the spend write is skipped. Same mechanism as the
image-generation case patch_image_cost.py already fixes.
The cost-calculator patch cannot cover this on its own: it adds a per-request
charge on top of a cost the normal path computes, and that path never got there.
This patch re-adds the pricing for audio_speech and audio_transcription
deployments, explicitly allowing input_cost_per_request through — LiteLLM does
not list it among its CustomPricing fields, which is precisely why the
cost-calculator patch has to read it.
