ChatGPT, Claude Code, and Perplexity are closer to what?

Answer: User-facing AI products and tools

User-facing AI products and tools ✓ — Correct! ChatGPT, Claude Code, and Perplexity are user-facing products. They do not just expose a bare model—they shape how people use it through interface, workflow, memory, search, file handling, coding tools, or answer presentation.

The data used to train models — Wrong. Training data is the material a model learned from before deployment. People do not open “training data” as a daily product; they use products that package trained models into something usable.

The compute platform behind the scenes — Wrong. Compute platforms provide chips, servers, or infrastructure. These apps sit much closer to the human-facing experience layer and determine what users actually feel when they say an AI is “good” or “bad.”