Makes flexible billing mode the default for new subscriptions
Subscriptions you create through the API now default to flexible billing mode. To use classic, set the billing_mode.type parameter to classic. Flexible billing mode changes subscription behavior and invoice calculations compared to classic. Review the differences.
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| [Makes flexible billing mode the default for new subscriptions](https://docs.stripe.com/changelog/clover/2025-09-30/billing-mode-default-flexible.md) | Billing, Checkout | Breaking | api |
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[Flexible billing mode](https://docs.stripe.com/billing/subscriptions/billing-mode.md) changes subscription behavior and invoice calculations compared to `classic`. Review the [differences](https://docs.stripe.com/billing/subscriptions/billing-mode/compare.md).
- For API users, the default billing mode depends on the request API version:
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