Three browser-based tools to estimate AI image and video generation costs, structure safer ecommerce product-image prompts, and calculate image sizes and aspect ratios. No login, uploads, API keys, or paid generation required.

ChinaLLM aggregates AI models (GPT-5.5, DeepSeek-v4, GLM-5.1, Qwen, Kimi) through one OpenAI-compatible endpoint. Key differentiators: • One API key for multiple providers • OpenAI-compatible — keep your SDK, just change the endpoint • Better pricing, especially for DeepSeek, GLM, Qwen • Simplified access to China's model ecosystem for global devs • Pay-as-you-go, no subscription Start with free credits.