OpenAI intros new generative text features while reducing pricing

As the competition in the generative AI space grows fiercer, OpenAI is upgrading its text-generating models while reducing pricing.
Today, OpenAI announced the release of new versions of GPT-3.5-turbo and GPT-4, the latter being its latest text-generating AI, with a capability called function calling. As OpenAI explains in a blog post, function calling allows developers to describe programming functions to GPT-3.5-turbo and GPT-4 and have the models create code to execute those functions.
For example, function calling can help to create chatbots that answer questions by calling external tools,

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