Best AI Image Generation APIs

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HiAPI gives developers one API surface for multiple AI image generation models. Use this page to compare the best image APIs for Chinese text rendering, photorealistic product visuals, chat-compatible prompts, and cost-aware production workloads.

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Quick comparison

Model	Best for	Endpoint	Notes
Qwen Image 2.0 API	Chinese text rendering and lower-cost generation	`/v1/tasks`	Current tested structure uses `input.messages` plus `parameters`
GPT Image 2 API	Long prompts, readable text, and layout-heavy images	`/v1/tasks`	Uses `input.prompt`, `input.aspect_ratio`, and `input.resolution`
GPT Image 2 Pro API	Brand visuals and 2K delivery	`/v1/tasks`	Higher-fidelity text-to-image option
FLUX 1.1 Pro API	Photorealistic product and ad visuals	`/v1/tasks`	Strong choice for commercial imagery

Which image API should I choose?

Choose Qwen Image 2.0 when Chinese text rendering, social graphics, and cost control matter. Choose GPT Image 2 when your app already uses Chat Completions and your prompts need rich creative direction. Choose FLUX 1.1 Pro when photorealism and commercial image quality are the priority.

For production use, start with one low-cost model for prompt iteration and keep a premium model available for final assets. HiAPI lets you compare these models without rebuilding authentication, billing, or request routing for each provider.

Pricing

Current pricing is maintained on HiAPI Pricing. The most common image cost drivers are model choice, output size, and request volume.

Example request

curl -X POST https://api.hiapi.ai/v1/tasks \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-image-2",
    "input": {
      "prompt": "A premium ecommerce hero image for a smart lamp, clean studio lighting",
      "aspect_ratio": "16:9",
      "resolution": "1K"
    }
  }'

Best AI Image Generation APIs

Quick comparison

Which image API should I choose?

Pricing

Example request

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