Pricing
Pay only for what you use. Prices are in US dollars per million tokens and are deducted from your prepaid balance. There are no subscriptions or monthly fees.
Model prices
USD per 1 million tokens. The price in effect when a request is made is the price charged for it.
Prices for Claude models change on 21 October 2026 at 00:00 (UTC+8). Until then the prices below apply; from then on this table shows the new prices.
Prices for Claude models changed on 21 October 2026 at 00:00 (UTC+8).
| Model | Model provider | Context | Input / 1M tokens | Output / 1M tokens |
|---|---|---|---|---|
| gpt-6-astra | OpenAI | — | $1.50 | $7.50 |
| gpt-6.1-sol | OpenAI | 372K | $0.30 | $1.50 |
| gpt-6-sol | OpenAI | 372K | $0.30 | $1.50 |
| gpt-5.6-sol | OpenAI | 372K | $0.75 | $4.50 |
| gpt-5.6-terra | OpenAI | 372K | $0.375 | $2.25 |
| gpt-5.6-luna | OpenAI | 372K | $0.15 | $0.90 |
| gpt-5.5 | OpenAI | 200K | $0.75 | $4.50 |
| claude-fable-5-1 | Anthropic | 1M | $3.00 | $15.00 |
| claude-fable-5 | Anthropic | 1M | $3.00 | $15.00 |
| claude-opus-5-5 | Anthropic | 1M | $1.00 | $5.00 |
| claude-opus-5 | Anthropic | 1M | $1.25 | $6.25 |
| claude-sonnet-5-5 | Anthropic | 1M | $0.50 | $2.50 |
| claude-sonnet-5 | Anthropic | 1M | $0.50 | $2.50 |
| claude-opus-4-8 | Anthropic | 200K | $1.25 | $6.25 |
| claude-opus-4-7 | Anthropic | 200K | $1.25 | $6.25 |
| claude-sonnet-4-6 | Anthropic | 200K | $0.75 | $3.75 |
Cached input is billed at a lower rate for models that support prompt caching. Reasoning tokens are counted as output. Every request and its cost are itemized in your console. Model names and trademarks belong to their respective owners; Koozhan AI is not affiliated with or endorsed by any model provider.
Long-context pricing for gpt-6-astra
The tier is chosen by the request's total input, including cached input. Above 272,000 tokens the whole request uses the higher tier.
| gpt-6-astra, USD / 1M tokens | Total input ≤ 272,000 | Total input > 272,000 |
|---|---|---|
| Input | $1.50 | $3.00 |
| Cached input (read) | $0.15 | $0.30 |
| Cache write | $1.875 | $3.75 |
| Output (includes reasoning) | $7.50 | $11.25 |
Image generation
Two quality levels, both deducted from your balance. Standard quality (the default) is billed per image, in CNY. High quality is billed by tokens. Only images that were generated successfully are charged; a request that fails, times out or is refused by content moderation is not.
| Model | Size | Standard quality, per image |
|---|---|---|
| gpt-image-2.5 | 1024×1024 (1K) | ¥0.08 |
| gpt-image-2.5 | 2048×2048 (2K) | ¥0.18 |
| gpt-image-2.5 | 3840×2160, 2160×3840 (4K) | ¥0.20 |
| gpt-image-2 | 1024×1024 (1K) | ¥0.08 |
| gpt-image-2 | 2048×2048 (2K) | ¥0.18 |
| gpt-image-2 | 3840×2160, 2160×3840 (4K) | ¥0.20 |
High quality is requested with "quality": "high" and is currently available for gpt-image-2.5. It is billed by the tokens the image actually used: US$30 per 1 million output (image) tokens and US$5 per 1 million input (prompt) tokens. The number of tokens an image takes is set by its size, so the cost can be estimated in advance: the table shows it for a short prompt, and a longer prompt adds about ¥0.036 per 1,000 tokens.
| Model | Size | High quality, typical | Maximum per image |
|---|---|---|---|
| gpt-image-2.5 | 1024×1024 (1K) | about ¥0.38 | ¥0.65 |
| gpt-image-2.5 | 2048×2048 (2K) | about ¥0.77 | ¥1.15 |
| gpt-image-2.5 | 3840×2160, 2160×3840 (4K) | about ¥0.72 | ¥1.10 |
A high-quality image never costs more than the maximum shown, and never less than the standard price of its size. The maximum is checked against your balance and held when you submit; once the image is generated you are charged for the tokens it used and the rest is released.
Image generation uses its own API key, created on the image page of the console. Images generated in the console are kept for 24 hours and images generated through the API for 1 hour; download the ones you want to keep.
How top-ups work
Top-up product
Listed at checkout as “charge”: ¥1.00 CNY per unit, 50 to 5,000 units per order. Any applicable taxes are shown at checkout.
What you buy
A top-up buys prepaid Koozhan AI balance, used only to pay for Koozhan AI API usage. Balance is not a bank deposit, e-money or a gift card, and it cannot be transferred or exchanged for cash except as described in our Refund Policy.
Currency and amounts
Top-ups are charged in Chinese yuan (CNY), for example ¥50.00 CNY. The minimum is ¥50 and the maximum is ¥5,000 per payment, in whole yuan. Your balance is credited in US dollars at the USD/CNY exchange rate locked for your order; the credited amount appears in your top-up history after payment.
One-time payments
Every top-up is a single payment. There are no subscriptions, recurring charges or automatic renewals.
Delivery
Koozhan AI is a digital service; nothing is shipped. Your balance is credited automatically after the payment processor confirms the payment. If it does not appear, email [email protected] with your order number.
Balance validity
Paid balance does not expire while your account is in good standing.
Refunds
If you have not used the service since a top-up, you can request a full refund to the original payment method within 7 days of payment. See the Refund Policy.
Payment methods
Available methods are shown at checkout and currently include WeChat Pay and bank cards. Koozhan AI never receives or stores your full card number.
Who you buy from
Orders placed through FastSpring checkout are sold by FastSpring.com, our authorized reseller and merchant of record; where direct checkout is offered, Sunyears, Inc. sells directly. See Payments and Billing.