# Models and plans > Which AI models each plan can use, how the monthly allowance is counted, and what changes when you bring your own key. Jump to a section on the website - [The allowance](https://www.inkwell.software/help/ai/models-and-plans#section-the-allowance) - [Model choice](https://www.inkwell.software/help/ai/models-and-plans#section-model-choice) - [Your own key](https://www.inkwell.software/help/ai/models-and-plans#section-your-own-key) - [Running out](https://www.inkwell.software/help/ai/models-and-plans#section-running-out) Every plan comes with Inkwell-hosted AI. Plans differ in two ways — how much you can run each month, and which models you can choose. ## The allowance Skill runs are counted per month, ghost-text completions and inline edits per day. The limits for every plan are on [Plans and quotas](https://www.inkwell.software/help/account/plans-and-quotas); Settings → Plan & usage shows how much of this period's allowance you have used. ## Model choice Paid plans unlock the more capable models for skills and chat; the model picker in a skill's options, and in the Chat tab on **Ask**, lists what your plan can use. The free plan runs the standard model. Which model a plan offers is on the [pricing page](https://www.inkwell.software/pricing). ## Your own key With your own Anthropic or OpenAI key, the model list is the provider's list, and runs draw on your provider account rather than the Inkwell allowance. See [Bring your own key](https://www.inkwell.software/help/ai/bring-your-own-key). ## Running out When the month's skill allowance is used up, a run stops before it starts and the Skills tab says so, with the options: wait for the reset, add credits, or use your own key. See [Credits and overage](https://www.inkwell.software/help/account/credits-and-overage). ## What next - [Plans and quotas](https://www.inkwell.software/help/account/plans-and-quotas): Every plan's limits — projects, draft lines, save points, skill runs, completions, collaborators, share links, storage, and export formats. - [Bring your own API key](https://www.inkwell.software/help/ai/bring-your-own-key): Use your own Anthropic or OpenAI key instead of Inkwell's hosted AI, pick the model, and see how a key changes what counts against your plan. - [Credits and overage](https://www.inkwell.software/help/account/credits-and-overage): What happens when the month's AI allowance runs out, how prepaid credit packs work, and how turning on overage lets runs draw them down instead of stopping. --- Canonical page: