Support
Contact us
Email 1041131247@qq.com with your app version, issue time, task ID (if available) and error message. Do not send passwords, Apple verification codes or unnecessary private photos.
Free quota and invitations
Base quota is 4 images at 2K and 2 at 4K daily. Free invitation codes activate 5× (20/10 images) or 10× (40/20 images). Quotas reset at 00:00 Asia/Shanghai with no rollover. The highest tier applies; tiers do not stack and repeated activation does not reset usage. Codes are not sold.
Save your results
Cloud photos are retained for 30 days after upload. Save results when tasks complete. Saved device copies remain usable. Once cloud photos expire, import a local copy to create a new task.
Queues and failures
Processing requires an internet connection. Check back if a task is queued or waiting for the server. Failed tasks do not consume successful-generation quota. If sign-in or saving fails, record the message and contact support.
Research
CaiyiAI is based on the ECCV 2026 Fill2SR research and uses a subsequent distilled, accelerated model developed by the author. AI enhancement varies with the input and may alter or generate details.