Topic
Migrating from OpenAI SDK to a Unified Gateway
13 posts on migrating from openai sdk to a unified gateway — part of api integration on the n4n AI blog.
What breaks when you migrate from OpenAI SDK to a gateway
Practical analysis of openai sdk migration gotchas when moving to a unified LLM gateway: broken assumptions about errors, streaming, tokens, and retries.
Moving off openai.ChatCompletion without a rewrite
Learn how to migrate openai chatcompletion to gateway without rewriting call sites by repointing base URLs and preserving request shapes.
Migrating Node.js OpenAI calls to a multi-provider gateway
Step-by-step guide to migrate Node.js OpenAI SDK to gateway endpoints: swap base URLs, map models, handle streaming, routing, and verify the cutover.
Migrating LangChain's ChatOpenAI to a unified gateway
Step-by-step guide to migrate LangChain's ChatOpenAI to a unified gateway, keeping your existing chains intact while accessing 240+ models, automatic fallback, and per-token metering.
Migrating from OpenAI SDK to a gateway with zero downtime
Step-by-step guide to a zero downtime OpenAI SDK migration to a unified gateway, using feature flags, shadow traffic, and an OpenAI-compatible endpoint.
Migrating from Azure OpenAI SDK to an OpenAI-compatible API
Practical guide to migrate Azure OpenAI SDK to gateway using OpenAI-compatible API: mapping, client swaps, code examples, and verification steps.
How to migrate 100+ OpenAI SDK calls to a gateway safely
Practical steps to migrate large codebase openai sdk to gateway across 100+ call sites with zero downtime using wrappers, env config, and shadow tests.
From vendor lock-in to gateway: migrating OpenAI SDK code
A practical engineering guide to refactoring OpenAI SDK calls into a unified gateway so you can avoid OpenAI vendor lock-in gateway risks with low effort and minimal code changes.
Using the OpenAI SDK as a drop-in client for n4n
Configure the OpenAI SDK as an openai sdk drop-in replacement gateway to access 240+ models without changing your application code.
Migrating from the OpenAI Python SDK to n4n in 10 minutes
Step-by-step tutorial to migrate OpenAI Python SDK to n4n: repoint the base URL, adjust model IDs, and preserve streaming, tools, and usage metering.
Migrating from openai-python to n4n: a step-by-step guide
Step-by-step tutorial to migrate openai-python library to n4n with runnable Python code, covering base URL, models, streaming, and fallback.
How to swap OpenAI's base_url for a unified LLM gateway
Step-by-step guide to swap OpenAI base url for gateway using the official SDK, with code samples for Python and TypeScript and verification tips.
A checklist for migrating from OpenAI SDK to a gateway
A practical openai sdk migration checklist for engineers moving to a unified LLM gateway: model mapping, base URL swap, fallback, caching, and metering.
More topics in api integration
- Function Calling Fundamentals27
- Structured Outputs & JSON Mode19
- cURL LLM API Cookbook15
- Integrating GPT-5, Claude Opus 4.8, Gemini 3, Llama 4 & More via One API15
- Next.js AI Chat Integration (App Router + Vercel AI SDK)15
- FastAPI LLM Backend Integration14
- Go net/http LLM API Client14
- LangChain + OpenAI-Compatible Gateway Integration14
- Node.js OpenAI-Compatible SDK Integration14
- Python + OpenAI-Compatible SDK Integration14
- Rate Limits, Retries & Backoff Strategies14
- React Streaming Chat UI Patterns14