展示的可用模型有 
grok-imagine-image 
grok-imagine-video 
grok-4.20-0309-reasoning 
grok-imagine-image-quality 
grok-3-mini-fast 
grok-4.3 
grok-3-mini 
grok-4.20-0309-non-reasoning 
grok-4.20-multi-agent-0309 
没有显示额度，不知道用量多少