An individual ChatGPT plan fits these answers
Your answers describe one person using ChatGPT for their own productivity, managing their own subscription, and working with low-sensitivity information. That does not require a company workspace, central billing, or a negotiated contract. Check the current individual plans on OpenAI’s own pages before you buy, because this recommendation does not quote a price.
Why this matches
The answers point to self-serve use: one person, individual productivity, a personally managed subscription, separate billing, and no company-tool connections to begin with. A shared workspace would add administration you have not asked for.
Limitations and when to reconsider
An individual plan does not give a company administrator a shared workspace, central billing, or formal offboarding. If colleagues need a managed workspace, or if security, procurement, or integrations become company requirements, ChatGPT Business or a consultation is the better next step. Confirm current plan limits on OpenAI’s pricing pages.