OpenAI Compatible API Server For StackFlow

Overview

This server provides an OpenAI-compatible API interface supporting multiple AI model backends including LLMs, vision models, speech synthesis (TTS), and speech recognition (ASR).

Quick Start

1. Install dependencies:

pip install -r requirements.txt

3. Start the server:

python3 api_server.py 

Supported Endpoints

Chat Completions

• Endpoint: POST /v1/chat/completions
• Request Format: OpenAI-compatible chat completion request
• Streaming: Supported

Text Completions

• Endpoint: POST /v1/completions
• Request Format: OpenAI-compatible completion request
• Streaming: Supported

Speech Synthesis (TTS)

• Endpoint: POST /v1/audio/speech
• Parameters:
  • model: TTS model name
  • input: Text to synthesize
  • voice: Voice type
  • response_format: Audio format (mp3, wav, etc.)

Speech Recognition (ASR)

• Transcription: POST /v1/audio/transcriptions
  • Converts speech to text in the same language
• Translation: POST /v1/audio/translations
  • Converts speech to English text
• Parameters:
  • file: Audio file
  • model: ASR model name
  • language (transcription only): Source language
  • prompt: Optional prompt

List Models

• Endpoint: GET /v1/models
• Returns: List of available models

FAQ

Q: Why am I getting "Unsupported model" errors?

A: The model name must exactly match one of the configured models in your config file.

Q: How do I enable streaming responses?

A: Set "stream": true in your request body for chat/completion endpoints.

Q: What audio formats are supported for ASR?

A: The supported formats depend on your ASR backend implementation.

Q: How do I manage model memory usage?

A: The server implements a pool system for LLM models - adjust pool_size in the config to control concurrent instances.

Troubleshooting

• Logs: Check server logs for detailed error messages
• Model Initialization: Verify all required backend services are running
• Configuration: Double-check model names and parameters in config.yaml

Example Requests

Chat Completion

curl -X POST "http://localhost:8000/v1/chat/completions" \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_KEY" \
-d '{
  "model": "qwen2.5-0.5B-p256-ax630c",
  "messages": [{"role": "user", "content": "Hello!"}],
  "temperature": 0.7
}'

Speech Synthesis

curl -X POST "http://localhost:8001/v1/audio/speech" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_KEY" \
  -d '{
    "model": "melotts_zh-cn",
    "input": "Hello world!",
    "voice": "alloy"
  }' \
  --output output.mp3

Required Libraries:

• StackFlow

License

• M5Module-LLM_OpenAI_API- MIT