AI APIsOpenAI10 min read

The OpenAI API

Responses vs Chat Completions, how input items and output items work, function calling, streaming, structured outputs, embeddings, and what the invoice is made of.

What this one covers

·Two APIs, one recommended
·The Responses request
·The output array
·Function calling
·Streaming
·Structured outputs
·Embeddings
·Pricing shape and limits

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