Sievellm

Smart AI router — automatically routes to the right model.

🚧 Early Development — Works, feedback welcome!

Stop overpaying for AI. Sievellm uses AI to detect query complexity and routes simple questions to cheap models, complex ones to capable models — saving you 40-80% on API costs.

Why Sievellm?

Installation

pip install sievellm

Quick Start

from sieve import route

# Simple query → automatically routes to cheap model (gpt-4o-mini)
response = route("What is 2+2?")
print(response)  # 4
print(f"Model: {response.model_used}")  # gpt-4o-mini
print(f"Cost: ${response.cost_usd:.6f}")  # ~$0.000007

# Complex query → automatically routes to capable model (gpt-4-turbo)
response = route("Explain the trade-offs between microservices and monoliths")
print(f"Model: {response.model_used}")  # gpt-4-turbo

Setup

export OPENAI_API_KEY="sk-..."

How It Works

1. AI Classification — Uses GPT-4o-mini to rate query complexity (costs ~$0.00001)
2. Smart Routing — Routes to cheap/mid/expensive tier based on complexity
3. Cost Tracking — Returns actual cost per request

Options

from sieve import Router

router = Router(
    smart_routing=True,   # AI-powered (default) or keyword-based
    force_tier="cheap",   # Force a specific tier (optional)
)

Roadmap

• AI-powered complexity detection
• Anthropic Claude support
• Multi-provider routing (cheapest across OpenAI + Anthropic + Google)
• Streaming responses
• Budget limits & alerts

License

MIT