Posts Lab offers Free Trial, but Grok does not.
Grok is designed for Academics, Businesses, Creative Professionals, Students and Uncommon Use Cases.
Pricing details for both Grok and Posts Lab are unavailable at this time. Contact the respective providers for more information.
Grok offers several advantages, including Engaging Interaction, Versatile Capabilities, Real-Time Information Access, Rapid Improvement Cycle, High Benchmark Scores and many more functionalities.
The cons of Grok may include a Early Development Stage.