Speech billed $0.000000 across three deploys while transcription billed
$0.010000 exactly, so the patch works for one audio call type and not the other.
Three hypotheses have now been retired (hidden-params early return; missing
character price; lookup miss) — the remaining question is WHERE the speech cost
is lost, and guessing is more expensive than measuring.
The helper now prints, for TTS/STT models only, whether it ran at all, what it
could see (custom_pricing keys, shared cost-map hits) and what it resolved, into
the app log. If those lines never appear for a speech call, the request never
reaches the model cost calculator and the loss is upstream of this patch.
Also fixes a real defect in the previous revision: the addition was wrapped in a
bare except, so a TypeError from a None base cost would have been swallowed
silently — which is exactly the sort of silence that made this take three
deploys. It now coerces a None base to 0.0 and reports any failure.
Tinfoil bills voxtral-tts $0.002 and whisper-large-v3-turbo $0.01 per REQUEST,
with $0 per token for both. Reading only the two token prices in its model list
made TTS look free and left STT billed at an older catalog's $0.05/1M tokens, so
neither matched what the co-op actually pays.
LiteLLM cannot express a per-request charge on the audio paths: per-request
pricing exists only on the search/rerank/MCP paths via input_cost_per_query, and
input_cost_per_request is read only by the proxy's cost-tracking settings, never
by the model cost calculator.
So patch_audio_request_cost.py, a build-time patch in the same shape as
patch_image_cost.py, makes response_cost_calculator honour a declared
input_cost_per_request. That function is the single funnel for every call type —
the proxy dispatches audio as `aspeech` and `transcription` and reaches it
through Logging._response_cost_calculator — so one insertion covers both. The
charge resolves from the per-deployment custom_pricing the logging layer builds
from our model_info, then the shared cost map, then call metadata, and the patch
is inert for any model that declares nothing.
config.yaml declares the real charges: $0.002/request for voxtral-tts, and
$0.01/request for whisper with its token price corrected to $0.
Verified before committing: the patch applies to the installed 1.103.2 anchors
and compiles; the helper's resolution order passes unit checks (all branches,
plus inert and garbage cases); the resulting config validates as YAML with all
12 entries intact. End-to-end spend is proven after deploy by a real TTS/STT call.
Refs code/litellm#5
Ubuntu