DEV Community

Ad Man
Ad Man

Posted on

A3M Router v2.0: Now an OpenAI-Compatible AI Gateway with 39 Providers 🚀

#ai #api #openai #showdev

We just shipped A3M Router v2.0.0 — the biggest update since launch.

What started as a simple routing library is now a full AI Gateway.

What's New

1. OpenAI-Compatible Proxy Server 

npx a3m-router serve
Enter fullscreen mode Exit fullscreen mode

That's it. You now have an OpenAI-compatible API proxy running on localhost:8787.

# Drop-in replacement — just change the base URL
from openai import OpenAI

client = OpenAI(
    base_url="http://localhost:8787/v1",
    api_key="not-needed"  # A3M Router handles provider keys
)

response = client.chat.completions.create(
    model="auto",  # Intelligent routing
    messages=[{"role": "user", "content": "Hello"}]
)
Enter fullscreen mode Exit fullscreen mode

Any OpenAI SDK works without code changes. Python, Node, LangChain, LlamaIndex — just point base_url to A3M Router.

2. Real-Time Dashboard 

http://localhost:8787/
Enter fullscreen mode Exit fullscreen mode

Live dashboard showing:

  • Request volume and costs
  • Provider status (online/offline)
  • Request log with routing decisions
  • Cost breakdown by provider

3. LangChain Adapter 

import { A3MChatModel } from 'adaptive-memory-multi-model-router/langchain';

const model = new A3MChatModel({ modelName: 'auto' });
const response = await model.invoke([new HumanMessage("Hello")]);
Enter fullscreen mode Exit fullscreen mode

Drop-in replacement for ChatOpenAI. Supports streaming, tool calling, and structured output.

4. Guardrails Engine 

import { GuardrailEngine } from 'adaptive-memory-multi-model-router';

const guardrail = new GuardrailEngine({
  promptInjection: true,
  piiDetection: true,
  contentFilter: true
});

const result = await guardrail.checkInput(userInput);
if (result.blocked) {
  // Prompt injection or PII detected
  console.log(result.reason);
}
Enter fullscreen mode Exit fullscreen mode

Built-in detection for:

  • Prompt injection attempts
  • PII (emails, phones, SSNs, credit cards, API keys)
  • Harmful content
  • Language detection for routing

5. Semantic Cache 

import { SemanticCache } from 'adaptive-memory-multi-model-router';

const cache = new SemanticCache({ similarityThreshold: 0.92 });

// First query: miss, calls provider
const result1 = await cache.get("What is Python?");

// Semantically similar: HIT (no API call!)
const result2 = await cache.get("Tell me about Python");
Enter fullscreen mode Exit fullscreen mode

Catches semantically similar queries using n-gram similarity. No embedding API needed.

6. Cost Analytics 

import { CostAnalytics } from 'adaptive-memory-multi-model-router';

const analytics = new CostAnalytics();
analytics.record({ provider: 'groq', cost: 0.001, latency: 420 });

const savings = analytics.getSavings('openai');
// Total saved: $X, XX% cheaper, projected monthly savings: $Y
Enter fullscreen mode Exit fullscreen mode

7. 39 Providers (was 12)

New providers added:

  • Local: Ollama, LM Studio, vLLM
  • Cheap/Fast: DeepInfra, Together AI, Fireworks, Anyscale, Novita, SambaNova
  • Mid-tier: Cohere, Perplexity, AI21
  • Asian: DeepSeek, Moonshot, Qwen, Zhipu, Yi
  • Enterprise: Azure OpenAI, AWS Bedrock, Google Vertex

Quick Start 

# Install
npm install adaptive-memory-multi-model-router

# Start the gateway
npx a3m-router serve

# Or use as a library
node -e "const { createA3MRouter } = require('adaptive-memory-multi-model-router'); ..."
Enter fullscreen mode Exit fullscreen mode

The Numbers

Metric v1.9.5 v2.0.0
Providers 12 39
Exports 13 17
Proxy server ❌ ✅
Dashboard ❌ ✅
LangChain ❌ ✅
Guardrails Basic Full engine
Semantic cache ❌ ✅
Cost analytics Basic Full analytics

Links

MIT license. Open source. No vendor lock-in.

Built because I was tired of marketing claims. Sharing the data so you don't have to benchmark yourself.

Top comments (0)