multi-llm-orchestrator 0.1.0

Unified interface for Russian LLMs with intelligent routing and fallback

Multi-LLM Orchestrator

A unified interface for orchestrating multiple Large Language Model providers with intelligent routing and fallback mechanisms.

Overview

The Multi-LLM Orchestrator provides a seamless way to integrate and manage multiple LLM providers through a single, consistent interface. It supports intelligent routing strategies, automatic fallbacks, and provider-specific optimizations. Currently focused on Russian LLM providers (GigaChat, YandexGPT) with a flexible architecture that supports any LLM provider implementation.

Quickstart

Get started with Multi-LLM Orchestrator in minutes:

Using MockProvider (Testing)

import asyncio
from orchestrator import Router
from orchestrator.providers import ProviderConfig, MockProvider

async def main():
    # Initialize router with round-robin strategy
    router = Router(strategy="round-robin")
    
    # Add providers
    for i in range(3):
        config = ProviderConfig(name=f"provider-{i+1}", model="mock-normal")
        router.add_provider(MockProvider(config))
    
    # Make a request
    response = await router.route("What is Python?")
    print(response)
    # Output: Mock response to: What is Python?

if __name__ == "__main__":
    asyncio.run(main())

Using GigaChatProvider (Production)

import asyncio
from orchestrator import Router
from orchestrator.providers import ProviderConfig, GigaChatProvider

async def main():
    # Create GigaChat provider
    config = ProviderConfig(
        name="gigachat",
        api_key="your_authorization_key_here",  # OAuth2 authorization key
        model="GigaChat",  # or "GigaChat-Pro", "GigaChat-Plus"
        scope="GIGACHAT_API_PERS"  # or "GIGACHAT_API_CORP" for corporate
    )
    provider = GigaChatProvider(config)
    
    # Use with router
    router = Router(strategy="round-robin")
    router.add_provider(provider)
    
    # Generate response
    response = await router.route("What is Python?")
    print(response)

if __name__ == "__main__":
    asyncio.run(main())

The MockProvider simulates LLM behavior without requiring API credentials, while GigaChatProvider provides full integration with GigaChat (Sber) API.

Installation

Requirements:

• Python 3.11+
• Poetry (recommended) or pip

Using Poetry

# Clone the repository
git clone https://github.com/MikhailMalorod/Multi-LLM-Orchestrator.git
cd Multi-LLM-Orchestrator

# Install dependencies
poetry install

Using pip

# Clone the repository
git clone https://github.com/MikhailMalorod/Multi-LLM-Orchestrator.git
cd Multi-LLM-Orchestrator

# Install in development mode
pip install -e .

Architecture

The Multi-LLM Orchestrator follows a modular architecture with clear separation of concerns:

┌──────────────────────────────────────────────┐
│              User Application                │
└─────────────────┬────────────────────────────┘
                  │
                  ▼
         ┌────────────────┐
         │     Router      │ ◄── Strategy: round-robin/random/first-available
         └────────┬───────┘
                  │
      ┌───────────┼───────────┐
      ▼           ▼           ▼
┌──────────┐ ┌──────────┐ ┌──────────┐
│Provider 1│ │Provider 2│ │Provider 3│
│(Base)    │ │(Base)    │ │(Base)    │
└────┬─────┘ └────┬─────┘ └────┬─────┘
     │            │            │
     ▼            ▼            ▼
   (API)        (API)        (API)

Components

• Router (src/orchestrator/router.py): Manages provider selection based on routing strategy and handles automatic fallback when providers fail.

• BaseProvider (src/orchestrator/providers/base.py): Abstract base class defining the interface that all provider implementations must follow. Includes configuration models (ProviderConfig, GenerationParams) and exception hierarchy.

• MockProvider (src/orchestrator/providers/mock.py): Test implementation that simulates LLM behavior without making actual API calls. Supports various simulation modes for testing different scenarios.

• Config (src/orchestrator/config.py): Future component for loading configuration from environment variables. Currently used for planned real provider integrations (GigaChat, YandexGPT).

Routing Strategies

The Router supports three routing strategies, each suitable for different use cases:

Strategy	Description	Use Case
round-robin	Cycles through providers in a fixed order	Equal load distribution (recommended for production)
random	Selects a random provider from available providers	Simple random selection for load balancing
first-available	Selects the first healthy provider based on health checks	High availability scenarios with automatic unhealthy provider skipping

The strategy is selected when initializing the Router:

router = Router(strategy="round-robin")  # or "random" or "first-available"

Run the Demo

See the routing strategies and fallback mechanisms in action:

python examples/routing_demo.py

No API keys required — uses MockProvider for demonstration.

The demo showcases:

• All three routing strategies (round-robin, random, first-available)
• Automatic fallback mechanism when providers fail
• Error handling when all providers are unavailable

See routing_demo.py for the complete interactive demonstration.

MockProvider Modes

MockProvider simulates various LLM behaviors for testing without requiring API credentials:

• mock-normal — Returns successful responses with a small delay
• mock-timeout — Simulates timeout errors
• mock-unhealthy — Health check returns False (useful for testing first-available strategy)
• mock-ratelimit — Simulates rate limit errors
• mock-auth-error — Simulates authentication failures

See mock.py for all available modes and detailed documentation.

Roadmap

See STRATEGY.md for the detailed roadmap and development plan.

Current Status

• ✅ Core architecture with Router and BaseProvider
• ✅ MockProvider for testing
• ✅ GigaChatProvider with OAuth2 authentication
• ✅ Three routing strategies (round-robin, random, first-available)
• ✅ Automatic fallback mechanism
• ✅ Example demonstrations

Supported Providers

• ✅ MockProvider — For testing and development
• ✅ GigaChatProvider — Full integration with GigaChat (Sber) API
  • OAuth2 authentication with automatic token refresh
  • Support for all generation parameters
  • Comprehensive error handling

Planned Providers

• YandexGPT
• Ollama (local models)

Documentation

• STRATEGY.md — Project roadmap and development plan
• routing_demo.py — Interactive demonstration of routing strategies and fallback mechanisms

Contributing

Contributions are welcome! Please feel free to submit a Pull Request. For major changes, please open an issue first to discuss what you would like to change.

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details.