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stableaudio.top

Uncensored text API for your audio pipeline

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What the text step costs

Transparent prepaid billing for the uncensored text API. Pay only for what you use, when you use it.

$0.15per 1M input tokens
$0.50Output tokens / 1M
100,000token context
$0.50trial credit
300requests per minute

Top-ups from $20 to $500, any whole amount. Bonus credit: +5% from $50, +10% from $100, +15% from $200.

No subscription. Prepaid credit never expires.

Cost calculator

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Worked examples

  1. Batch caption generation for 100 audio clips

    Input: 50,000 tokens ($0.0125). Output: 250,000 tokens ($0.15). Total cost: $0.2625.

  2. Complex reasoning for script writing

    Input: 10,000 tokens ($0.0025). Output: 8,000 tokens ($0.008). Total cost: $0.0105.

  3. Real-time streaming transcription

    Input: 5,000 tokens ($0.00125). Output: 10,000 tokens ($0.01). Total cost: $0.01125.

Simple Token Pricing

We charge strictly per token used. Input tokens cost $0.15 per 1 million and output tokens cost $0.50 per 1 million. There are no hidden fees, no monthly subscriptions, and no tiered pricing structures. This flat rate ensures that your costs scale linearly with your actual usage. You only pay for the tokens the model processes, making it easy to predict your expenses for any volume of text generation.

Prepaid Crypto Payments

Fund your account by card (Visa, Mastercard, Apple Pay, Google Pay) or crypto (USDT on TRC20, USDC on Base). Minimum top-up is $20, with a maximum of $500 per transaction. Add 5% bonus credit on purchases of $50 or more, and 10% bonus on purchases of $100 or more. Your credit never expires, so you can top up when rates are favorable or when you have cash flow available.

Bonus Credit Tiers

We reward larger top-ups with bonus credit that adds to your available balance. A $50 purchase gives you $52.50 in credit. A $100 purchase gives you $110 in credit. The bonus is applied immediately upon successful payment and is available for use alongside your base credit. This allows you to stretch your budget further without increasing your actual out-of-pocket cost.

Free Errors & Refusals

If a request fails due to a network error or an internal server error, you are not charged for those tokens. If the model refuses a request based on our hard content limit (e.g., minor sexual content), you are also not charged. You only pay for successful token generation. This means your prepaid balance is only consumed by actual, usable output, protecting you from wasted spend on failed requests.

Specs that affect cost

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

SpecValue
Tools / tool callsYes — tools, tool_choice; replies carry tool_calls, also when streaming; send results back as role: tool
Max context100,000 tokens, input and output combined
Structured outputresponse_format: {"type": "json_object"}
Completion lengthprompt + completion fit within 100,000 tokens; max_tokens optional, no separate output cap
Parallel requestsup to 8 in parallel per key
Rate limit300 requests per minute per key
Trial credit$0.50 of credit valid 7 days, no card needed · Trial key: 2 parallel requests, 60 req/min; full limits (8 and 300) after first top-up
PaymentUSDT (TRC20) or USDC (Base), any whole amount from $20 to $500
Price$0.15 per 1M input tokens · $0.50 per 1M output tokens
Credit expirypaid credit never expires, no subscription
Volume bonus+5% on $50+, +10% on $100+, +15% on $200+

The complete technical table is in the documentation.

Questions and answers

How do I pay for my API usage?

You can pay by card (Visa, Mastercard, Apple Pay, Google Pay) or crypto (USDT on the TRC20 network, USDC on the Base network). Payments are processed immediately upon confirmation.

Does my prepaid credit expire?

No, your prepaid credit never expires. You can top up your account whenever you like, and the balance remains available for as long as you need it. This is ideal for developers who want to lock in a budget without worrying about monthly renewals.

What is the minimum top-up amount?

The minimum top-up amount is $20. You can add any whole dollar amount between $20 and $500 per transaction. Larger transactions of $50 and $100 trigger automatic bonus credits.

Do I get charged for failed requests?

No. If a request fails due to an error or is refused based on our content policy, you are not charged for the tokens processed. You only pay for successful responses that return output.

Your key is one form away

Create an account, copy the key, change the base URL. That is the whole setup.

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