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Documentation Index

Fetch the complete documentation index at: https://old-docs.kie.ai/llms.txt

Use this file to discover all available pages before exploring further.

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1. Available Models & Playground

You can find the latest supported models on our Market page: 👉 https://kie.ai/market
  • We continuously update and onboard new models as soon as they are stable.
  • Each model page links to its Playground, where you can test and experiment directly in our UI before calling the API.
  • The Playground is the best place to understand model behavior, parameters, and output formats.

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2. Pricing

The complete and up-to-date pricing list is available here: 👉 https://kie.ai/pricing
  • Our prices are typically 30%–50% lower than official APIs.
  • For some models, discounts can reach up to 80%.
  • Pricing may change as upstream providers adjust their costs, so always refer to the pricing page for the latest numbers.

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3. Creating and Securing Your API Key

Create and manage your API keys here: 👉 https://kie.ai/api-key Important security notes:
  • Never expose your API key in frontend code (browser, mobile apps, public repositories).
  • Treat your API key as a secret.
To help protect your usage, we provide:
  • Rate limits per key (hourly, daily, and total usage caps)
  • IP whitelist support, allowing only approved server IPs to access the API
These features help prevent accidental overuse and unauthorized requests.

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4. Required Request Headers

Every API request must include the correct headers: 
Authorization: Bearer <YOUR_API_KEY>
Content-Type: application/json
If these headers are missing or incorrect, you may receive: 
{"code":401,"msg":"You do not have access permissions"}
Always double-check your headers when debugging authentication issues.

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5. Logs & Task Details

You can inspect all your historical tasks here: 👉 https://kie.ai/logs For each task, you can view:
  • Creation time
  • Model used
  • Input parameters
  • Task status
  • Credit consumption
  • Final results or error details
If you ever suspect incorrect credit usage, this page is the source of truth for verification.

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6. Data Retention Policy

Please note our retention rules:
  • Generated media files: stored for 14 days, then automatically deleted
  • Log records (text / metadata): stored for 2 months, then automatically deleted
If you need long-term access, make sure to download and store results on your side in time.

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7. Asynchronous Task Model

All generation tasks on KIE are asynchronous. A successful request returns:
  • HTTP 200
  • A task_id
A 200 response only means the task was created, not completed.
To get the final result, you must either:
  • Provide a callback (webhook) URL in the request, or
  • Actively poll the “query record info” API using the task_id

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8. Rate Limits & Concurrency

By default, we apply the following limits:
  • Up to 20 new generation requests per 10 seconds
  • This typically allows 100+ concurrent running tasks
  • Limits are applied per account
If you exceed the limit:
  • Requests will be rejected with HTTP 429
  • Rejected requests will not enter the queue
For most users, this is more than sufficient. If you consistently hit 429 errors, you may contact support to request a higher limit — approvals are handled cautiously.

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9. Developer Support

The recommended support channels are available directly from the dashboard (bottom-left menu):
  • Get help on Discord
  • Get help on Telegram
What you get:
  • Private, 1-on-1 channels
  • Your data and conversations remain confidential
  • Faster and more technical responses
Support hours: UTC 21:00 – UTC 17:00 (next day) You may also email us at support@kie.ai, but this is not the preferred or fastest option.

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10. Stability Expectations

We provide access to top-tier, highly competitive APIs at very aggressive pricing. That said:
  • We are not perfect
  • Our overall stability may be slightly lower than official providers
  • This is a conscious trade-off
In practice, KIE is stable enough to support production workloads and long-term business growth, but we believe in setting realistic expectations upfront.

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11. About the Team

KIE is built by a small startup team.
  • We move fast
  • We care deeply about developer experience
  • We are constantly improving
At the same time, we acknowledge that:
  • Not everything is perfect
  • We can’t satisfy every use case immediately
Your feedback helps us improve — and we genuinely appreciate it.