Yes, both Impossible Images and OpenDream offer a Free Trial.
Pricing for Impossible Images Starts at $12.73/month whereas for OpenDream Starts at $9.9/month.
Impossible Images offers several advantages, including Royalty-free stock images, Subscription-based service, Free trial available, Driven by Cookiebot, Personalized content and ads and many more functionalities.
The cons of Impossible Images may include a Potential privacy concerns, Requires cookies consent.
OpenDream offers several advantages, including Generates art from prompts, Accessible online, Wide customization range, Uses A100 GPUs, Super quick generating time and many more functionalities.
The cons of OpenDream may include a Limited free credits, No API, Limited queuing capacity, Limited simultaneous generation. and Commercial use conditioned by TOS