— Pricing
Pick the pace that fits.
The free plan is permanent. When the study load grows, an upgrade takes effect immediately — and the yearly option saves about 17%.
…
How credits are priced
Everything runs on credits, billed by actual use: each model carries its own per-million-token credit price, and every price is published.
See every model's price →Credits on top
Heavy week, same plan: top up credits whenever you need them. Stripe Checkout handles payment; credits land after verified confirmation.
Love the project?
Support is optional and grants no perks — just a way to keep development going.
Prices are shown in CNY. Yearly plans can be cancelled anytime.