OpenAI gives GPT models function calling superpowers
OpenAI just overhauled its Chat Completions API with native function calling, letting GPT-4 and GPT-3.5 reliably output structured JSON to trigger external tools. The update also introduces a 16k context window for GPT-3.5 Turbo and slashes embedding costs by 75%. Why it matters: developers can now build real-world agents and database workflows without hacking fragile prompts.