Question: I'm looking for a platform that can analyze the Big O notation of my algorithms in multiple programming languages.

If you're looking for a service that can analyze the Big O notation of your algorithms in several programming languages, Figstack is worth a look. The AI-powered coding assistant offers a number of tools, including Time Complexity, which estimates your code's efficiency in Big O notation terms. It also offers Explain Code for natural language explanations of your code, Language Translator for converting code from one language to another and Docstring Writer for generating documentation. You can try Figstack with a free trial before committing to a plan.

Another useful tool is TimeComplexity.ai. The service uses GPT-3.5 Turbo technology to analyze the runtime complexity of your programs, supporting a range of languages including Python, C++, Java and more. It offers runtime complexity analysis, support for partially written code and a tiered pricing system with free options. That can be useful for optimizing your code and understanding how it performs with different input sizes.

If you want a more extensive code intelligence platform, take a look at Sourcegraph. Although it offers a lot more tools, including an AI-powered assistant called Cody, Code Search and Code Insights, its ability to track codebase insights and optimize code efficiency with large language models can be very useful. It supports multiple programming languages and integrates with common IDEs, so you can better understand and navigate large codebases.