ChatPlayground Offers Lifetime Access to AI Models

StackSocial is offering a ChatPlayground AI lifetime subscription for $67.15 (regularly $619) through March 29 with code MARCH15, granting access to over 20 models including GPT-5.1, Claude Sonnet 4.5 and Gemini 3 Pro preview. The platform displays side-by-side model outputs and includes prompt-engineering tools, multimodal uploads, unlimited messages, priority support, and desktop browser compatibility. The promotion consolidates multiple model interfaces into one subscription for developers and creators.