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Documentation Index

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Quill AI uses a credit system to track AI usage. Each request costs credits in proportion to how much computation it took — short questions cost a few credits, long agentic edits with attached files cost more. This guide explains how credits work and how to manage them.

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How Credits Work

Every time you send a request to Quill AI, credits are deducted from your account based on:
  1. Input size — how much context, including attached files and prior turns, the AI processed
  2. Output size — how much the AI wrote back
  3. Reasoning depth — complex requests that require multi-step thinking cost more
There’s no model picker — Quill picks the best model for the job automatically. Your job is to write good prompts; ours is to keep cost-per-result sensible.

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Typical credit costs

A rough guide for what to expect per request:
Request typeCredits
Quick edit or short question1–5
Mid-length chat (no file context)5–15
Conversation continuing in the same thread5–20
Long-form rewrite or scene revision15–40
Heavy agentic turn (multiple tool calls, big attached file)40–100+
Quill makes a thread cheaper as you use it: the first message in a new thread is more expensive because the AI has to read your script context fresh, but every follow-up in the same conversation reuses cached context at roughly 1/10 the cost.

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Check Your Credit Balance

Your current credit balance is always visible in Inkwell: In the Status Bar (bottom-right corner):
  • Shows your remaining credits
  • Updates in real-time after each request
In the Quill AI Panel:
  • Credit count appears in the header
  • Click to see detailed usage information

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Free Plan Credits

The free plan includes:
  • 100 welcome credits the day you sign up
  • 15 credits per month on the 1st of each month thereafter
  • Full access to Quill AI
What you can do with 100 welcome credits: explore Quill’s full feature set across a handful of substantive conversations. Enough to find out whether Quill fits how you write — not enough to write a full feature on the house.
Credits do not roll over. Unused monthly credits expire at the end of each month. The welcome bonus is separate and stays in your account until you use it.

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Pro Plan Credits

The Pro plan includes:
  • 500 credits per month at 10/month∗∗,or∗∗10/month**, or **100/year (save $20/year)
  • Resets on your billing date each month
  • Priority support
That’s enough credit budget for a Pro user to chat with Quill several times most days through a typical writing month, with room for occasional heavy revision passes. Upgrade to Pro in Settings → Account or at inkwell.app/pro

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Purchase Additional Credits

If you run out of credits before your reset date, you can purchase more:
1

Open Settings

Go to Inkwell → Settings… (or press Cmd+,)
2

Navigate to Account

Click the Account tab.
3

Purchase Credits

Click Buy Credits. The credit pack is 150 credits for $4.99.
4

Complete purchase

Enter payment details and confirm. Credits are added immediately.
Purchased credits never expire and can be used anytime, even after your monthly allocation resets.

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Monitor Your Usage

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View Credit History

1

Open Settings

Go to Inkwell → Settings… (or press Cmd+,)
2

Account Tab

Click Account → Credit History.
3

Review usage

See each request with:
  • Date and time
  • Credits consumed
  • Remaining balance

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Tips to stretch your credits

Stay in the same thread. Quill caches your script context within a conversation, so follow-up turns cost a fraction of the first turn. Starting a fresh thread for every question makes Quill re-read your script every time. Be specific. A focused question (“rewrite this exchange to feel more like Sorkin”) costs about the same as a vague one (“can you make this better?”) — but produces a useful result on the first try, saving the credits a second clarifying turn would have cost. Attach files once. If you upload a script or reference PDF early in the conversation, Quill remembers it for the whole thread. Re-attaching the same file in later turns just burns credits.

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Credit Deduction Rules

Credits are deducted when:
  • ✅ You send a message to Quill AI
  • ✅ Quill responds successfully
Credits are NOT deducted when:
  • ❌ You type in the Quill panel without sending
  • ❌ A request fails or errors before Quill responds
Once a request completes successfully, credits cannot be refunded, even if you don’t like the output. Refine your prompt before sending if you’re not sure what you want.

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Free vs. Pro Comparison

FeatureFree PlanPro Plan
Welcome credits100 (one-time)—
Monthly credits15500
Price$010/moor10/mo or 100/yr
Full Quill AI access✅✅
Credit rollover❌❌
Purchase extra credits✅✅
Priority support❌✅

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Frequently Asked Questions

Quill charges proportionally to actual compute cost. A quick “fix this typo” question and a “rewrite this whole scene with three character revisions” request take very different amounts of work. We pass the difference through as credit cost rather than averaging it across users.
Quill AI stops working until either:
  1. Your monthly credits reset (1st of the month for Free, billing date for Pro)
  2. You purchase additional credits
  3. You upgrade to Pro (if on Free plan)
Your scripts and work are never affected — only Quill AI features are paused.
Monthly plan credits do not roll over and expire at the end of each billing period. Welcome credits and purchased credit packs never expire and carry forward indefinitely.
Monthly plan credits and purchased credit packs are not refundable, but purchased credits never expire — you can use them whenever you come back.
The first turn in a new thread pays full cost to read your script context. Every follow-up turn in the same thread reuses that context at roughly 1/10 the cost — so a 10-turn conversation usually costs far less than 10 separate one-off questions.
Credits are deducted per successful request, not per quality of output. Try refining your prompt for better results. If you think a response was clearly broken, contact support.
No. Credits are tied to your individual Inkwell account and cannot be transferred.

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Next steps

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