LLM Router Aggregators Overview | Generated by AI

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Question: What are the major LLM API routers/aggregators besides OpenRouter?

Answer:

Here are the main ones worth knowing:

Tier 1 — Full Aggregators (multi-provider routing)

Service Models Key Feature
OpenRouter 300+ Best coverage, fallback routing, usage analytics
Together AI 100+ Good for open-source, fast inference, fine-tuning
Fireworks AI 50+ Fast inference, function calling, JSON mode
Replicate 1000s Any model via Docker, good for image/audio too
Groq ~20 Extremely fast (LPU chip), Llama/Mixtral
Cerebras ~5 Fastest inference (~2000 tok/s), Llama 3.3

Tier 2 — Focused Routers

Service Specialty
Hugging Face Inference API Any HF model, serverless
Novita AI Cheap open-source models
DeepInfra Competitive pricing on open models
Perplexity API Search-augmented models
Mistral API Official Mistral, good EU option

Tier 3 — Enterprise / Self-hosted Routers

Service Use Case
LiteLLM Self-hosted proxy, 100+ providers, OpenAI-compatible
PortKey Observability + routing + guardrails
Helicone Proxy with logging, rate limiting, caching
Martian Intelligent model routing by cost/quality

For Your Setup Specifically

Given you use OpenRouter heavily and build CLI agents:

LiteLLM is the most useful one to self-host — single OpenAI-compatible endpoint, routes to any provider:

pip install litellm

# litellm --model openrouter/deepseek/deepseek-chat
# or in code:
from litellm import completion
response = completion(
    model="openrouter/deepseek/deepseek-r1",
    messages=[{"role": "user", "content": "hi"}],
    api_key="<API_KEY>"
)

PortKey if you want observability across your 2B token/month consumption — it logs, traces, and caches across providers.

Pricing Comparison for DeepSeek V3 (your primary model)

Router Input ($/1M) Notes
OpenRouter ~$0.27 With caching discounts
Together AI ~$0.30  
Fireworks ~$0.27  
DeepInfra ~$0.28  
Official API ~$0.27 api.deepseek.com direct

For your use case (high volume, CLI agents, DeepSeek-heavy), I’d recommend:

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