Opus 4.8, GPT 5.5, Gemini 3.1 Pro, all free. No card binding needed, and you get 50 credits right away. The platform behind it is valued at $4 billion. Most people are still burning money on three subscriptions to test prompts—Opus for A, GPT for B, and Gemini as backup. Now, you can compare model performance side by side with just one entry point, no need for repeated payments. Steps: Register to get credits, prioritize high-cost tasks, and consider API integration after using them up.