Kie.ai offers affordable per-call API access to OpenAI's GPT-Image-1 (4o Image) model, supporting text-to-image, image editing, and accurate in-image text rendering for developers.
About
Kie.ai is an API platform that provides third-party access to a large catalog of AI models for image, video, audio, and chat tasks. Its 4o Image API product gives developers access to OpenAI's GPT-Image-1 model, also known as ChatGPT 4o Image, through a single endpoint with per-call credit pricing. The product addresses two common pain points with official image model APIs: unpredictable token-based billing and complicated integration.
GPT-Image-1 is OpenAI's multimodal image generation model, and Kie.ai wraps it in a straightforward REST workflow: developers obtain an API key, submit a generation or editing request, and either poll the task status or receive results through callbacks. Kie.ai positions the offering around predictable flat pricing, high-concurrency support, documentation, and developer assistance. The same platform also hosts many other models, so teams can consolidate multiple AI workloads under one account and billing system.
Key Features
Pricing & Fees
- Pricing: Per-call pricing is listed as $0.03 for 1 image output, $0.035 for 2 image outputs, and $0.04 for 4 image outputs. Larger credit top-ups can include a 10% bonus, bringing the effective per-image cost down to roughly $0.027.
- Free credits: New accounts receive 80 free credits to evaluate the API.
- No subscription required: Billing works through a credit system with a minimum top-up of $5, and higher purchases unlock additional discounts.
- Commercial use: The listing states the model can be used commercially.
- API note: Kie.ai's documentation advises using the `files_url` parameter rather than the deprecated `file_url`.
Who It's For
This API is aimed at developers and technical teams building applications that need programmatic image generation or editing — for example, design tools, marketing content pipelines, product visualization features, and infographic generators. Creative teams can use it for consistent character design or stylized artwork such as Ghibli-inspired illustrations, while startups and agencies may prefer its flat per-call pricing over token-based billing. It also suits teams already using Kie.ai for other AI models, since one account covers image, video, audio, and chat APIs.
FAQ
What is the Kie.ai 4o Image API?It is a service on Kie.ai that exposes OpenAI's GPT-Image-1 (ChatGPT 4o Image) model through a REST API for text-to-image generation and image editing.
How much does it cost?Kie.ai charges per call: $0.03 for one image output, $0.035 for two, and $0.04 for four, with bonus credits on larger top-ups reducing the effective cost to roughly $0.027 per image.
Is there a free trial?Yes, new accounts receive 80 free credits, and there is no subscription; the minimum top-up is $5.
How do I integrate it?Developers get an API key from Kie.ai, submit a generation request, and either poll task status or use callbacks to receive finished results; full documentation is provided on the official site.
Can generated images be used commercially?The Kie.ai listing indicates the model is available for commercial use, though users should verify terms on the official site for their specific use case.
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