Your AI allowance

Every plan has feature allowances for Papero's AI features and paper search, and a fair-use limit. The amounts themselves are on the pricing page, and they differ between Free and Plus.

Two kinds of limit

1. Feature allowances: chat answers, Workflow runs, accepted suggestions, rewrites, section drafts, AI outlines, reviews and paper searches each have their own. On Free most of them reset each day; reviews reset each month, and AI outlines and chat answers also have a monthly limit. On Plus they reset each calendar month. Free's Workflow runs are a set number in total and do not reset. Days and months follow UTC.
2. The fair-use limit: each account also has a monthly limit on the cost of its AI requests. Heavier work, such as a Workflow at Max depth, uses more of it than a quick rewrite. Plus has a higher limit.

A feature allowance you do not use does not carry over.

What counts

• Autocomplete: the suggestions you accept. There is also a cap on how many are shown. See Autocomplete.
• Rewrites: the rewrites you keep, including refinements of suggestions and charts or equations made from a description. See Rewrite text.
• Section drafts: the drafts you keep. See Draft a section.
• AI outlines: each outline you ask for. See Outlines and headings.
• Chat: each answer, with or without Web or an image. Web questions also have a daily limit. See Chat with your library.
• Workflows: each run, when you start it. Its searches also count as paper searches. See Workflows.
• Reviews: each source check, and each run of Proofread, Claims, Peer review, Tone of voice and the Citation report. See Review checks.
• Paper searches: each search in Cite and on the Find papers page, each search a Workflow makes, and each search Claude or ChatGPT makes through the connector. On Plus, the papers Papero finds for cited suggestions count too, and the meter says Includes papers found for cited suggestions.

Everything that uses AI also counts toward the monthly fair-use limit. So does the work Papero does on an uploaded PDF so that Chat and suggestions can find its passages, and each web search Chat runs.

What does not count

• Looking up a paper by DOI, PMID, arXiv ID or ISBN, and adding a custom citation.
• The Journal impact filter, because it only hides results already on screen.
• Saving, editing and picking saved prompts. Only the question you send counts.
• Opening a passage in the PDF reader, citing a source from an answer, and inserting, copying or rating an answer.
• A chat answer that found nothing to answer from, and a Workflow run you cancel before it starts or that ends without writing a section.
• Typing an equation in TeX, or changing a chart by hand.

Paper search uses no AI, so the fair-use limit never stops it. Every plan, Plus included, also has a daily paper search limit on top of the paper search allowance. When you reach it, Papero says You have reached today’s paper search limit. It resets at midnight UTC, and lookups and custom citations keep working.

Where to see what you have left

1. Open the account menu at the foot of the sidebar. The line beside Usage sums up the one thing you most need to know, such as a feature you have used up.
2. Press Usage. Settings opens at Plan & usage.
3. The Usage card lists each feature allowance with what you have used, a bar, and when it resets.

When you are close to the fair-use limit, or have reached it, a note under the meters says so and when it resets. Chat, rewrites, section drafts, Review, the Workflows page and, on the first screen of a new document, AI outlines also show how many you have left.

When you reach a limit

When a feature allowance runs out, Papero tells you, for example You have used all your chat answers for now., and when more become available. After the day's web questions, turn off Web to keep asking. On Free the window is titled You have reached a Free limit and offers an upgrade. Your other features keep working.

When the fair-use limit runs out, you see You have reached this month’s fair-use limit for AI. AI features pause until next month, when the limit resets. Your documents and citations keep working.

When AI pauses for a while

Papero also has a daily limit on AI spending across the whole service. On a very busy day, AI turns off for Free accounts first, and Papero says AI is off for Free accounts until a given time. Plus keeps working. If the whole limit is reached, AI is off for everyone until the next day. Either way it comes back at midnight UTC, and your writing is safe.

Now and then a single AI feature is switched off for maintenance, and Chat says Chat is switched off for maintenance. While a feature is paused, its meter shows Off until a time, or Unavailable at the moment. A Workflow that is running when AI pauses stops early and keeps the sections it wrote.

To compare the plans, see pricing. To upgrade, see Upgrade to Plus.