Vercel AI SDK[1] shines in this aspect in JS ecosystem.

They have the concept of providers [2] and switching between them is easy as changing parameters of a function[3]

[1]:https://sdk.vercel.ai/docs/introduction

[2]: https://sdk.vercel.ai/docs/foundations/providers-and-models

[3]: https://sdk.vercel.ai/docs/ai-sdk-core/overview#ai-sdk-core