Why it matters

OpenAI provider is popular. Understanding shapes integration.

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The architecture

OpenAiChatModel.builder.

OpenAiEmbeddingModel.

Compatible: base URL for OpenAI-compatible APIs.

OpenAI providerOpenAiChatModelGPT-4 etc.OpenAiEmbeddingModeltext-embedding-3OpenAI-compatiblebase URLBase URL override works with vLLM, TGI, LM Studio, LocalAI, etc.
OpenAI.
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How it works end to end

API key + org + project.

Timeout + retry.

Base URL override for compatible.