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What do I use credits for?

You use credits when AI creates or edits text and images, based on the work it processes. Light, Pro, and Max also include a daily allowance for lightweight models that don’t spend credits. See “Can I use Inki without limits?” on this page for the models and limits.

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How many credits will I use?

Actual credit usage varies based on the selected model, content length, and conversation. Credit use for image generation and image editing varies based on your instructions, the image used for editing, and the generated result. With Astra 6, Sol 6, Sol 6.1, Sol 5.6, and Terra 5.6, long-input pricing applies when the input for a single processing request exceeds 272,000 tokens. This includes conversation history, reference text, and reused input. The rate applies to the whole request, rather than just the portion above the threshold. Input rates are twice the usual rates, and output rates are 1.5 times the usual rates, so the increase in credit usage depends on the amount of input and output. Past usage won’t be charged retroactively.

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Plans

Inki offers Free, Pro, and Max. In the iOS app, Light is also available with a Japanese App Store account. Higher plans come with more monthly credits. Pro and Max plan members can also purchase additional credits. Check inki.so for the latest pricing and plan details.

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Billing Cycles

  • Pro is available with monthly or annual billing
  • Max is available with monthly billing only
  • Annual plans still add and reset credits every month instead of granting a full year of credits at once

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How Credits Work

  • Each plan gives you monthly credits that reset every month and do not carry over
  • Bonus credits, purchased credits, and plan carryover credits can carry over
  • Plan carryover credits have an expiration date
  • Check expiration dates in Settings. Credits that expire on or before your next monthly reset are used first
  • Pro and Max plan members can purchase additional credits
  • Check your balance in the “Plan” tab in Settings
  • If AI Editing, Inline Generation, or Review ends with an error before producing a usable result, it normally doesn’t use credits. The exception is a review that reaches a usage limit after generation has started: it uses credits for generation already completed, even if no result is saved. A review blocked by a limit before generation starts doesn’t use credits
  • If AI Assistant ends with an error, only the work it actually processed uses credits. If it processed nothing, it doesn’t use credits
  • Retrying after an error is a new request and uses credits for what it actually processes
  • Image generation and image editing use credits once a result image is created. Discarding the result without adding it to your note or replacing the original image does not refund those credits. Generations recorded as failed by the server don’t use credits. If the app stops waiting before processing finishes, a generation that later completes can still use credits

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Automatic Credit Top-ups

Pro and Max subscribers billed through the web can buy credits automatically when their balance falls below a chosen threshold. In a desktop browser or the Mac app, open Settings > Usage > Auto top-up, set the threshold and purchase limit for the period, then review the price, credits, and saved payment method before confirming. If your balance is already below the threshold, a purchase may happen immediately after confirmation. Choosing “No limit” allows another charge each time your balance falls below the threshold. Turning auto top-up off prevents further automatic purchases. If payment fails or a scheduled plan change or cancellation turns auto top-up off, follow the on-screen guidance and turn it on again once the issue is resolved. App Store subscriptions aren’t eligible for auto top-up.

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Plan Changes

For a paid subscription purchased on the web, open the “Plan” tab in Settings to change your plan.
  1. Open “Manage subscription” and choose a plan and billing cycle
  2. Review the charge and effective date on the confirmation screen. If credits carry over, you can also check their balance and expiration date
  3. Click “Confirm change”. If your card issuer requires verification, follow the on-screen instructions to complete it
If you close verification before finishing, select “Continue verification” to resume. If you miss the displayed deadline, the change is canceled and your current plan continues. In a mobile browser, choose a plan and billing cycle in Settings to open the confirmation screen within Inki. Check the charge and effective date before confirming. You can return to Settings after completing or canceling the change.

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Upgrade

  • Switching to a higher plan, or from monthly to annual billing on the same plan, takes effect immediately
  • A new billing period starts, and new plan credits apply right away
  • Unused credits for the current month become plan carryover credits whether your paid plan is billed monthly or annually. Check the confirmation screen for their expiration date
  • When upgrading from annual billing, prepaid fees for months that haven’t started are applied to the charge. Any amount left over stays on your account and is applied to future invoices

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Downgrade or Switch the Same Plan from Annual to Monthly Billing

  • Switching to a lower plan, or from annual to monthly billing on the same plan, takes effect at the end of your current billing period
  • Keep your current plan until then
  • No plan carryover credits are granted
  • To cancel a scheduled change, find the upcoming switch under “Current Plan” in Settings

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Which AI models can I use?

You can choose many models on Free too. Opus 5, Opus 5.5, Fable 5.1, Astra 6, and Sol 5.6 require Pro or Max. Check the model menu in each feature for the models you can currently use. Models that require a plan upgrade appear locked. See Models and Reasoning for help choosing a model and setting reasoning.

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Can I use Inki without limits?

On Light, Pro, and Max, you can use lightweight models without spending credits up to 300 times per person per day. The number of uses isn’t unlimited. This includes Luna 6 and Haiku 5.5 where it’s available in your model menu. Both models and all three features, AI Assistant, AI Editing, and Inline Generation, share this allowance. It resets at midnight Japan time (JST). This limit helps keep access fair for everyone. Other models and features, and Free and trial plans, use credits as usual.

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Can I keep using AI after my credits run out?

Yes. On Light, Pro, and Max, you can continue with Luna 6 or Haiku 5.5 where it’s available in your model menu, until you reach the daily limit. AI Assistant’s Auto continues with Luna 6. To use Haiku 5.5, select it in the model menu. Other models and features, and Free and trial plans, require a credit balance.

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Payment Method

On the web, pay by credit card through Stripe. In the iOS app, purchase a plan through the App Store. Light is shown only with a Japanese App Store account, regardless of the app’s interface language. If an App Store plan you’ve purchased isn’t reflected in Inki, use “Restore purchases” with the Apple account used for the purchase. Restoration is available on the plan selection screen and in Settings. Manage or cancel an App Store subscription in Apple’s subscription settings.