Sapiens AI Agnes Image

Read when the user picks --provider agnes or sets default_model.agnes. Default model is agnes-image-2.1-flash.

Models

agnes-image-2.1-flash (only model)

• Text-to-image and image-to-image (with --ref) in a single /images/generations endpoint
• Supports reference images as public URLs or Data URI (base64)
• Optimized for high information density, complex layouts, and rich details
• Size rules: both dimensions divisible by 32 (720px exception), long edge ≤ 2048, total pixels ≤ ~4M
• Default size: 1024x1024; custom --size supports arbitrary WxH within the above rules
• --ar supported: computed as 2048-based size (long edge ≤ 2048, short edge proportional, both snapped to 32px); 1:1 special-cased to 1024x1024

Response Format

• The sync API always returns a URL
• Default (--response-format file): downloads the image and saves as .png
• Pass --response-format url: writes the URL string to .txt instead

--n Behavior

The Agnes API returns a single image per request regardless of the n parameter. Passing --n > 1 triggers a local error from validateArgs before any API call is made.

Behavior Notes

• API key required: AGNES_API_KEY
• Base URL: https://apihub.agnes-ai.com/v1 (override with AGNES_BASE_URL)
• Model override: AGNES_IMAGE_MODEL env
• response_format is always embedded in extra_body (not at request top level)
• Reference images: local files converted to Data URI base64 inline; remote URLs passed through
• Rate limit defaults: concurrency=3, startIntervalMs=1100 (override via BAOYU_IMAGE_GEN_AGNES_CONCURRENCY / BAOYU_IMAGE_GEN_AGNES_START_INTERVAL_MS)
• Timeout: 120s per request

Size Resolution

• --size <WxH> wins over --ar
• --ar maps to a concrete size using the algorithm: long edge ≤ 2048, short edge proportional, both dimensions snapped to 32px
• --ar 1:1 is special-cased to 1024x1024

Common --ar Results

Official References

• Agnes AIGC API Hub