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GPT Image 2 is OpenAI’s next-generation image generation model, available through AnyFast API. Built on an autoregressive + reasoning hybrid architecture, it delivers native 2K resolution, near-perfect text rendering (~99% character-level accuracy across 12+ languages), and superior multi-object scene composition.

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Key capabilities

  • Text-to-Image — Generate images from natural language descriptions
  • Flexible resolution — Any custom size up to 4K (3840px), edges must be multiples of 16
  • Near-perfect text rendering — ~99% character-level accuracy across 12+ languages
  • Multi-object composition — Complex scenes without occlusion or misplacement issues
  • Multi-style — Photorealism, illustration, anime, vector, 3D, data visualization
  • Batch generation — Generate up to 4 images per request

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Output specifications

PropertyValue
SizesFlexible resolution (e.g. 1024x1024, 2048x2048, 3840x2160)
Size constraintsEdges: multiples of 16, aspect ratio ≤ 3:1, total pixels 655,360–8,294,400
Qualitylow, medium, high
Formatspng, webp, jpeg

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Quick example

curl https://www.anyfast.ai/v1/images/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-image-2",
    "prompt": "A futuristic city skyline at sunset with flying cars",
    "size": "2048x2048",
    "quality": "high"
  }'

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Parameters

ParameterTypeRequiredDescription
modelstringYesMust be gpt-image-2
promptstringYesText description of the desired image
nintegerNoNumber of images to generate (1–4). Default: 1
sizestringNo{width}x{height} format. Edges must be multiples of 16, aspect ratio ≤ 3:1, total pixels 655,360–8,294,400, max edge 3,840px. Default: 1024x1024
qualitystringNolow, medium, high. Default: medium
output_formatstringNopng, webp, jpeg. Default: png
moderationstringNoauto or low. Default: auto
output_compressionintegerNoCompression level for jpeg/webp (0–100).

API Reference

View the interactive API playground for GPT Image 2.