A unified API platform that resells access to 200+ AI models — video, image, music and language — behind one API key and one credit wallet, typically priced 30–50% below official provider rates.

How much does Kie.ai cost?

Pay as you go. Credits cost about $0.005 each and never expire, and every model has its own per-task rate. New accounts get 80 free credits to test with.

Do credits expire, and are failed tasks charged?

Credits never expire, and failed generations are not charged, so experimenting with a new model only costs what succeeds.

What are the best Kie.ai alternatives?

fal.ai is the closest alternative for media generation APIs, Replicate offers a broader open-model catalog, and OpenRouter is stronger if you only need LLM routing.

Kie.ai

免费增值

One API key for 200+ AI models

AI API AI Image API AI Video API

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Kie.ai 是什么？

Kie.ai is a unified API platform that gives developers access to more than 200 AI models through a single API key and a single credit balance. Instead of opening separate accounts with every model provider, you call Kie.ai's endpoints and it routes the job to the model you name — Veo 3.1, Kling and Seedance for video, Nano Banana, GPT Image and Flux for images, Suno and ElevenLabs for audio, and GPT, Claude, Gemini and DeepSeek for text.

It is aimed at developers and small teams who build AI features but do not want to maintain separate billing, rate limits and integrations for every provider. Because Kie.ai buys capacity at platform scale, its per-task prices typically run 30–50% below the providers' official rates, and failed generations are not charged.

核心功能

200+ models behind one API key
Video, image, music and LLM endpoints
Unified credit pricing in USD
Credits never expire
Failed generations are not charged
Playground, docs and cookbooks included

如何使用 Kie.ai

1
Create a free account
Sign up at kie.ai and verify your email. New accounts receive 80 free credits for testing, with no card required.
2
Get your API key
Open the API Key page in the dashboard and copy your key. All model families share the same key and credit balance.
3
Pick a model and create a task
Browse the model marketplace or docs for the endpoint you need, then POST a create-task request with your prompt and parameters.
4
Fetch the result
Poll the record-info endpoint with your task ID, or set a callback URL and let Kie.ai push the result to your server when generation finishes.

Kie.ai 价格

套餐	价格	周期
Free trial	$0	one-time80 free credits for new accounts, no card required
Pay as you go	usage-based	per taskCredits cost about $0.005 each and never expire; every model has its own per-task rate — e.g. Nano Banana 2 at 1K ≈ $0.04 per image, Veo 3 Fast ≈ $0.30 per 8-second video

Kie.ai 适合谁？

Developers adding AI generation to a product without opening accounts with every provider
Indie hackers prototyping across several video and image models at once
Small teams that want one predictable credit bill for AI features