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Aether has four subscription tiers and four one-time credit packs. Tiers determine your monthly credit grant and how many warm slots you get. New accounts start on the Free tier.

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Tiers

The monthly credit grant is added to your balance at the start of each billing cycle. Every tier can use every VM size; larger runtime classes consume credits at higher per-hour rates.
Lists every tier with its price, credits, and warm slots. aether billing subscription shows your current tier and aether billing summary combines subscription and balance.

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VM sizes

Each VM size is a fixed runtime class with a fixed shape and per-hour credit rate. See Billing & Credits for what credits buy. Every size runs on dedicated performance CPU cores, so sustained work — dependency installs, builds, test suites — runs at full speed for the whole task. Each size doubles the previous one: N cores, 4N GB of memory, 5N credits per hour. Every task is created with an explicit size, resolved from --size, then the project’s default task size, then small. GPU runtime classes are not available.

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Credit packs

Credit packs are one-time purchases that top up your balance beyond your monthly grant. They are available on any tier. Credit-pack credits expire 12 months after purchase. When you spend, subscription-grant credits are used before pack credits, and packs are drawn down earliest-expiry-first.
The first command lists packs; the second opens a hosted checkout for the chosen pack. Use --tier starter|pro|max instead of --credit-pack to subscribe to a tier.
Checkout and billing-portal flows require a payment provider to be configured for the deployment. Where it is, manage or cancel a subscription with aether billing portal.