How ChatGPT Works?

Explore ChatGPT’s inference pipeline—from tokenization to response streaming and conversational context handling.

In AI and ML engineering interviews, it’s common to be asked, “Can you explain how ChatGPT works?” This question probes your understanding of large language models and ability to articulate complex systems clearly. Interviewers want to see that you grasp the key components of a generative AI system (like ChatGPT) and can explain the inference-time process—i.e., what happens from when a user enters a prompt to when ChatGPT streams back a response.

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