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You would need to have a local copy of the GPT model, which are not exactly OpenAI's plans.

For embeddings, you can use smaller transformers/llms or sentence2vec and often get good enough results.

You don't need very large models to generate usable embeddings.

You are correct, I assumed parent was referring to specific embeddings generated by OpenAI LLMs.

It’s cheaper to use OpenAI. If you have your own compute, sentence-transformers is just as good for most use cases.

Yes. The best public embedding model is decent, but I expect it’s objectively worse than the best model from OpenAI.

Sure, but I don't know of any models you can get local access to that work nearly as well.