Most teams building AI products eventually hit the same wall: the app was built against one model provider's API shape, and now there's a business reason to also support a second or third model family. The usual path is painful, a new SDK, a new authentication flow, and a new set of provider-specific quirks to handle in error paths and retries.

There's a simpler pattern worth knowing about if you're facing this: routing through a single OpenAI- and Anthropic-compatible endpoint that sits in front of multiple models, rather than integrating each provider separately.

What makes this workable without a rewrite is that the migration is endpoint-first. If an application is already built against an OpenAI->

This matters most for anything that already makes multiple model calls in a single workflow. An agent that plans, calls tools, and then summarizes its own output does not need the same model for every step. Testing different models per step usually means standing up separate provider clients just to compare them side by side. A single routing layer removes that setup cost and makes the comparison a matter of changing a model name rather than rewriting an integration.

One example of this approach in production is GonkaRouter, which routes OpenAI- and Anthropic-compatible requests to model families including Qwen, Kimi, and MiniMax, running on the Gonka decentralized compute network rather than a single centralized inference stack. New accounts get a trial credit after email signup, which is enough to test real prompts before committing to any workflow.

A few practical questions worth asking before adopting any router like this:

Does it support the request format your application already uses, so you are not rewriting the integration layer just to add it.

Does the model list cover what you actually need, rather than a broad list that thins out for the specific model family your workload depends on.

What does the provider log or retain about requests passing through it, since a router by definition sits in the path of your API traffic.

Pricing and available models change often enough in this space that it is worth checking a provider's current pricing page directly rather than relying on a number from any single article, including this one.

More on GonkaRouter's model routing approach: https://gonkarouter.io/