Question: Is there a platform that can optimize code for performance and provide explanations on how it works?

If you're looking for a service that can optimize your code for performance and explain how it works, AI Code Mentor could be a good choice. The service, which uses artificial intelligence to optimize, refactor and review code in several programming languages including JavaScript, HTML/CSS and Python, offers features like simplifying code complexity, refactoring for better readability and guided code review with explanations. It offers a free Basic Plan, a Pro Monthly Plan and a Pro Yearly Plan, so you can choose the level of service that best suits your needs and budget.

Another good option is Figstack, an AI-powered coding assistant that can help developers understand and write code in multiple languages. Its main features include Explain Code, which offers natural language descriptions of code; Language Translator, which converts code from one language to another; Docstring Writer, which generates documentation; and Time Complexity, which estimates how efficient code is. Figstack also offers a free trial, so you can try it out before signing up for a plan.

ZZZ Code AI is a general-purpose service that supports a broad range of programming languages including Python, C# and HTML. It offers a variety of AI-powered tools for converting code, explaining code, debugging, refactoring and documenting code. With features like AI Code Explainer and AI Code Refactor, it can help optimize and understand code. The service is free online, though it has a temporary character limit, so it's good for developers who want to try it out and see if it's helpful.

For a more complete service, Kodezi offers automated code correction, debugging and optimization, as well as tools for generating documentation and translating code. It supports more than 30 programming languages, and offers a free plan with limited features, as well as a Pro plan for $6.99 per month. Kodezi is designed to help you get the most out of your time by automating the more mundane parts of coding so you can focus on higher-level work.