Official, quoted as official
OpenAI’s help center (GPT-5.6 in ChatGPT, Business models and limits, file uploads FAQ, deep research FAQ, Codex rate card, flexible pricing), the pricing page and OpenAI announcements. When a statement comes from these we say so and link it.
In-product wording
The limit messages and reset times ChatGPT shows. These are the most accurate signal for any individual account and we always point readers there first.
Observed behaviour, labelled
Where OpenAI confirms a limit exists but publishes no number (images, voice, consumer reasoning), we say “capped, unpublished” rather than inventing a figure.
What we do not do
We do not describe workarounds that break OpenAI’s usage policies, such as multiple accounts, and we do not present third-party guesses as facts.