Chat vs Work

I'm lost between these two.
Chat has Agents. The help says that they are legacy version of skills and if you start fresh, you need to use still. Skills are available in the Work. So, Work is a modern version of chat? But in the chat I can select fast/think/research; in work I cannot.

On the other hand, Chat has memory (under the "Context"), work - does not.

Why are features split this way, and what one should use when?

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u/Ok_Sky_555 — 2 days ago