> ## Documentation Index
> Fetch the complete documentation index at: https://bianxieai.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Billing and top-ups

> Pricing, redemption codes, and usage

Model pricing matches the corresponding official pricing. The [live pricing page](https://api.bianxie.ai/pricing) is the source of truth for availability and prices.

Buy a redemption code from the [store](https://shop.bianxieai.com/). The minimum top-up is **USD 1 (RMB 6)**. This documentation does not infer other tiers or exchange rates.