⇄ LLMRouter
🚀 Smart routing for production LLM apps

Send every query to the
right model, automatically.

LLMRouter is an intelligent routing system that optimizes LLM inference by dynamically selecting the most suitable model for each query — balancing task complexity, cost, and performance in real time.

Get early access → See how it works
↓ 60%avg. cost reduction
< 20msrouting overhead
1 APIevery model, one endpoint

How it works

One endpoint in. The optimal model out. LLMRouter analyzes each request and routes it to the model that best fits the job.

Your app POST /v1/route
→
LLMRouter
  • Complexity scoring
  • Cost & latency budget
  • Quality routing policy
→
GPT-4o
Claude
Llama 3
Mistral
Gemini
+ your own

Why LLMRouter

🚀

Smart routing

Automatically routes queries to the optimal LLM based on task complexity, cost, and performance requirements — no manual model selection.

💸

Cut costs, not quality

Send simple queries to cheap, fast models and reserve frontier models for the hard ones. Typical deployments save 40–70% on inference.

⚡

Sub-20ms overhead

Routing decisions happen in milliseconds, so your users never feel the difference — except in the bill.

🔌

Drop-in API

OpenAI-compatible endpoint. Point your existing SDK at LLMRouter and start routing across providers instantly.

🛡️

Automatic fallbacks

If a provider degrades or rate-limits, LLMRouter reroutes transparently to keep your app online.

📊

Full observability

Per-query traces of which model handled what, the cost, latency, and why it was chosen.

Quickstart in 30 seconds

Already using the OpenAI SDK? Change one line. LLMRouter handles model selection for you.

  • ✓ OpenAI-compatible
  • ✓ Works with any provider key
  • ✓ No code rewrite
route.py
# pip install openai
from openai import OpenAI

client = OpenAI(
    base_url="https://api.llmrouter.sh/v1",
    api_key="llmr_sk_...",
)

# Ask for "auto" — LLMRouter picks the best model
resp = client.chat.completions.create(
    model="auto",
    messages=[{"role": "user",
               "content": "Summarize this contract..."}],
)

print(resp.choices[0].message.content)
# → routed to the cheapest model that meets quality

Stop overpaying for the wrong model.

Join the early access list and start routing smarter today.

No spam. We'll email you when your spot opens up.