AIHub serves as a unified workspace for 19 AI models including OpenAI, Anthropic, Google, Meta, Mistral, Perplexity, DeepSeek, and xAI. Users can send prompts to one or two models side by side and keep a library of saved prompts. Each model is billed based on a credit system, ensuring transparency in costs, as every message is charged according to the model's real price per token used. Plans start at $19 for 10,000 credits (about 1,400 short messages), with top-up credits that never expire. Each plan includes access to all models, prompt libraries and conversation search, so every AI model you need sits in one place, on one bill.