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Migrating from OpenAI

Step-by-step guide to migrate your application from OpenAI SDK to Cencori. Get security, logging, and multi-provider support with minimal code changes.

Why Migrate to Cencori?

If you're currently using the OpenAI SDK directly, switching to Cencori gives you immediate access to:

  • Opt-in PII Protection: block requests that contain personal data (off by default; turn on in the project's Settings → General)
  • Complete Logging: Every request logged with full metadata
  • Multi-Provider Support: Switch to Anthropic or Gemini without code changes
  • Cost Tracking: Real-time cost monitoring and analytics
  • Rate Limiting: Built-in protection against abuse

Before and After Comparison

Before (OpenAI SDK)

// before.ts
import OpenAI from 'openai';
 
const openai = new OpenAI({
  apiKey: process.env.OPENAI_API_KEY,
});
 
// No built-in security
// No automatic logging
// Locked to OpenAI
const response = await openai.chat.completions.create({
  model: 'gpt-4',
  messages: [{ role: 'user', content: 'Hello!' }],
});

After (Cencori SDK)

// after.ts
import { Cencori } from 'cencori';
 
const cencori = new Cencori({
  apiKey: process.env.CENCORI_API_KEY,
});
 
// PII protection is opt-in (project Settings → General)
// Request logging built-in
// Multi-provider support
const response = await cencori.ai.chat({
  model: 'gpt-4o',
  messages: [{ role: 'user', content: 'Hello!' }],
});

Migration Steps

Step 1: Install Cencori SDK

npm uninstall openai
npm install cencori

Step 2: Get Your Cencori API Key

Sign up at the Cencori dashboard, create a project, and generate an API key.

Step 3: Update Your Code

Old (OpenAI):

import OpenAI from 'openai';
const openai = new OpenAI({
  apiKey: process.env.OPENAI_API_KEY,
});

New (Cencori):

import { Cencori } from 'cencori';
const cencori = new Cencori({
  apiKey: process.env.CENCORI_API_KEY,
});

Step 4: Update API Calls

Old:

const response = await openai.chat.completions.create({
  model: 'gpt-4',
  messages: messages,
});

New:

const response = await cencori.ai.chat({
  model: 'gpt-4o',
  messages: messages,
});

API Mapping Reference
OpenAI SDKCencori SDK
openai.chat.completions.create()cencori.ai.chat()
max_tokensmaxTokens
stream: truecencori.ai.chatStream()

Migrating Streaming Code

OpenAI Streaming

const stream = await openai.chat.completions.create({
  model: 'gpt-4',
  messages: messages,
  stream: true,
});
 
for await (const chunk of stream) {
  process.stdout.write(chunk.choices[0]?.delta?.content || '');
}

Cencori Streaming

const stream = cencori.ai.chatStream({
  model: 'gpt-4o',
  messages: messages,
});
 
for await (const chunk of stream) {
  process.stdout.write(chunk.delta);
  
  if (chunk.finish_reason) {
    console.log('\nDone!');
  }
}

Testing Your Migration
  1. Make a simple chat request and verify the response
  2. Check AI Gateway → Logs in the Cencori dashboard
  3. If you turned on PII protection, confirm blocked requests show as Filtered
  4. Test streaming if you use it
  5. Monitor costs on the AI Gateway overview

Bonus: Features You Get for Free

Switch to Anthropic

Just change the model parameter - no code changes needed:

// Use Claude instead
const response = await cencori.ai.chat({
  model: 'claude-sonnet-4.5', // Just change this!
  messages: messages,
});

PII Protection

Turn on PII protection in the project's Settings → General to block requests that contain personal data. With it off (default), requests pass through as 200 OK.

Cost Breakdown

See exact costs per request, per model, per provider in real-time. Compare costs across different models easily.

Next Steps
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