Chat Completions API

The completions API endpoint received its final update in July 2023 and has a different interface than the new chat completions endpoint. Instead of the input being a list of messages, the input is a freeform text string called a prompt.

JSON mode will not guarantee the output matches any specific schema, only that it is valid and parses without errors.

accounts for 97% of API GPT usage

Chat Completions API Notion

ChatML

OpenAI Structured Output

OpenAI Platform

Explore developer resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's platform.

https://platform.openai.com/docs/guides/gpt/completions-api

OpenAI Platform

Explore developer resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's platform.

https://platform.openai.com/docs/guides/gpt/chat-completions-vs-completions

OpenAI Platform

Explore developer resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's platform.

https://platform.openai.com/docs/models/overview

OpenAI Platform

Explore developer resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's platform.

https://platform.openai.com/docs/guides/gpt/chat-completions-api

GPT-4 API general availability and deprecation of older models in the Completions API

GPT-3.5 Turbo, DALL·E and Whisper APIs are also generally available, and we are releasing a deprecation plan for older models of the Completions API, which will retire at the beginning of 2024.

https://openai.com/blog/gpt-4-api-general-availability

Chat Completions API

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