Transparent prepaid pricing

Q: Does prepaid credit expire?

No. We guarantee that prepaid credit never expires. There are no monthly subscription fees and no hidden expiration mechanisms. You can top up at any time, and the balance will remain in your account until you use it up.

Q: What is the billing unit?

We bill by token count. The price for input tokens is $0.25 per million tokens, and the price for output tokens is $1.00 per million tokens. You can view the exact token consumption after each request via response headers or the console.

Q: What payment methods are supported?

We support two payment methods: cryptocurrency (USDT, USDC), ensuring developers worldwide can top up conveniently. The minimum top-up amount is $10, and larger top-ups come with additional credit bonuses.

Q: Are there limits on free trial credit?

Each user is eligible for one-time free trial credit of $0.50, valid for 7 days. During the trial, you can fully experience the core API features, including streaming and function calling, without needing to provide a credit card to start testing.

Pay as you go with no hidden fees and prepaid credit that never expires. This model lets developers building uncensored AI apps control costs precisely, avoiding subscription waste.

No subscription. Prepaid credit never expires.

Price per 1M input tokens: $0.25
Output tokens / 1M: $1.00
Token context: 100,000
Trial credit: $0.50
Requests per minute: 300

Cost calculator

Monthly input tokens

Monthly output tokens

Estimated monthly cost$0.00

Calculation example

Long document semantic analysis and summarization
Process a 32,000-token long text, generate a 2,000-token summary. Input cost: 0.032 * $0.25 = $0.008; Output cost: 0.002 * $1.00 = $0.002. Total cost: $0.01.
Roleplay chat session
Run one round of historical dialogue with 5,000-token context, model generates 500-token reply. Input cost: 0.005 * $0.25 = $0.00125; Output cost: 0.0005 * $1.00 = $0.0005. Total cost: $0.00175.
Batch data processing
Request 60,000 tokens of input (near context window limit) in one go, generate 10,000 tokens of structured output. Input cost: 0.06 * $0.25 = $0.015; Output cost: 0.01 * $1.00 = $0.01. Total cost: $0.025.

Pay as you go and prepaid mechanism

We use a pure prepaid model with no monthly subscription fees or auto-renewal traps. Top up in advance; the API charges your balance based on actual token consumption. Input tokens cost $0.25/1M tokens, output tokens cost $1.00/1M tokens. This transparent pricing makes it easy to predict long-term deployment costs. Prepaid credit never expires, ensuring your funds are fully under your control.

Top-up bonuses and capital efficiency

To reduce long-term costs for developers, we offer tiered top-up bonuses. Top up from $50 to get +5% bonus credit, from $100 to get +10% bonus credit. This means your prepaid funds go further. All top-ups are done via crypto (USDT, USDC) and are instant. You don't pay high fixed fees for small tests; just pay for the uncensored inference you use.

Trial credit and zero-barrier start

New users get $0.50 free trial credit immediately upon registration, no credit card or phone number required. The credit is valid for 7 days, enough to test API latency, function calling, and uncensored model output quality. The trial credit helps you quickly verify if Wu Xianzhi API fits your specific use case. After formal use, manage balance and rates via the API key page; the process is simple and direct.

Specs that affect cost

One price list, one set of limits, all features on every key.

Spec	Value
Context window	100,000 tokens, input and output combined
Max output	up to the rest of the 100,000-token window; max_tokens optional (no separate cap)
Structured output	`response_format: {"type": "json_object"}`
Tools / tool calls	Supported: tools + tool_choice, tool_calls in the reply (streamed too), tool results as `role: tool` messages
Parallel requests	8 requests at the same time per key
Requests per minute	300/min per key
Subscription	no monthly fee; paid credit does not expire
Top-up	USDT (TRC20) or USDC (Base), any whole amount from $10 to $500
Price	$0.25 per 1M input tokens · $1.00 per 1M output tokens
Free trial	$0.50 for 7 days, no card · Trial key: 2 parallel requests, 60 req/min; full limits (8 and 300) after first top-up
Volume bonus	+5% from $50, +10% from $100

All limits and error codes are listed in the docs.

Frequently Asked Questions

Does prepaid credit expire?

No. We guarantee prepaid credit never expires, with no monthly subscription fee or hidden expiry mechanisms. Top up anytime; your balance stays in your account until used.

What is the billing unit?

We bill by token count. Input tokens cost $0.25 per million tokens, output tokens cost $1.00 per million tokens. View exact token usage in response headers or the console after each request.

What payment methods are supported?

We support two crypto payment methods (USDT, USDC), ensuring convenient top-ups for global developers. Minimum top-up is $10; larger amounts earn bonus credit.

Are there limits on free trial credit?

Each user gets one $0.50 free trial credit valid for 7 days. Test core API features like streaming and function calling without a credit card.

Just fill out the form to get your key

Create an account, copy the key, modify the Base URL. Configuration is that simple.

Get API key