I am new to Open Ai community.. And i need help from you and it will be vey much useful that how i can access open ai “gpt 3.5- turbo” api key for free and its truly for my project and research.
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Why do you want gpt 3.5- turbo? Why not gpt 5.2?
AFAIK, there is no free lunch for using any model API. However, there is a free version of ChatGPT.
You should look into the pricing here: https://platform.openai.com/docs/pricing. The mini and nano models especially are quite affordable, eg 5 cents for a million input tokens.