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Fix LiteLLM STT default: use whisper-1 instead of vertex_ai/chirp

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vertex_ai/chirp does not work via LiteLLM's audio transcription proxy.
Changed default LITELLM_STT_MODEL from vertex_ai/chirp to whisper-1.
Updated .env.example documentation to match.
This commit is contained in:
ifedan-ed 2026-03-30 13:28:49 +00:00
parent a2263d9530
commit 567450b51e
2 changed files with 8 additions and 4 deletions
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7
.env.example
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@ -42,10 +42,11 @@ OPENROUTER_API_KEY=sk-or-v1-your-key
# LITELLM_API_KEY=sk-litellm-your-key
# Admin can discover available models via the admin panel
#
# LiteLLM Speech-to-Text (auto-enabled when LITELLM_API_BASE is set)
# LiteLLM Speech-to-Text
# TRANSCRIBE_PROVIDER=litellm
# LiteLLM STT: NOT supported for Vertex AI Chirp via LiteLLM proxy.
# Use TRANSCRIBE_PROVIDER=google for Vertex AI / Gemini STT.
# LITELLM_STT_MODEL=whisper-1 # model_name alias in LiteLLM config
# NOTE: vertex_ai/chirp does NOT work via LiteLLM audio proxy.
# For Vertex AI speech, use TRANSCRIBE_PROVIDER=google (Gemini inline audio).
#
# LiteLLM TTS: WORKS — use the model_name alias from your LiteLLM model_list
# TTS_PROVIDER=litellm (auto-detected when LITELLM_API_BASE set)

5
src/routes/transcribe.js
View file

@ -78,7 +78,10 @@ router.post('/transcribe', authMiddleware, upload.single('audio'), async (req, r
if (provider === 'litellm') {
if (!process.env.LITELLM_API_BASE) return res.status(400).json({ error: 'LITELLM_API_BASE not set.' });
var sttModel = process.env.LITELLM_STT_MODEL || 'vertex_ai/chirp';
// Default to whisper-1 — vertex_ai/chirp does NOT work via LiteLLM audio proxy.
// User should set LITELLM_STT_MODEL to their configured whisper alias, or
// use TRANSCRIBE_PROVIDER=google for Vertex AI / Gemini transcription instead.
var sttModel = process.env.LITELLM_STT_MODEL || 'whisper-1';
var FormData = require('form-data');
var axios = require('axios');
var form = new FormData();