How to Review Code with OpenAI on Mac
Get instant, thorough code reviews powered by OpenAI directly from your Mac. Select any code snippet, hit a shortcut, and receive actionable feedback on bugs, performance, and style — without leaving your editor.
Why This Combination Works
OpenAI's GPT-4o excels at understanding complex codebases and catching subtle logic errors across dozens of languages. Its broad training data means it recognizes anti-patterns in everything from Python data pipelines to Swift UI code. The model's ability to reason about code structure makes it ideal for catching issues that linters miss.
Recommended Model
GPT-4o — its large context window and strong multi-language understanding make it the best all-around choice for reviewing code across frameworks and paradigms.
Example Prompt
Review this code for bugs, performance issues, and style violations. Flag any potential security concerns. Suggest concrete improvements with brief explanations for each.
Setup Steps
Download Echoo
Install Echoo from echoo.ai and launch it from your menu bar. The app runs quietly in the background, ready whenever you need it.
Add your OpenAI API key
Open Echoo settings, navigate to the Providers tab, and paste your OpenAI API key. Select GPT-4o as your preferred model.
Set up a Code Review command
Create a custom command with a system prompt like "You are a senior software engineer. Review the selected code for bugs, performance issues, security vulnerabilities, and style. Be specific and actionable."
Review code with a shortcut
Select any code in your editor or browser, press your assigned keyboard shortcut, and Echoo sends the code to OpenAI. The review appears in seconds.
Frequently Asked Questions
A single code review of a 100-line function costs roughly $0.01–$0.03 with GPT-4o. Even heavy daily use rarely exceeds a few dollars per month.
Yes. GPT-4o handles Python, JavaScript, TypeScript, Swift, Rust, Go, Java, C++, Ruby, and many more. It's particularly strong with popular languages that have extensive open-source codebases.
OpenAI's API does not use your data for training by default. Your code is transmitted over TLS encryption. For highly sensitive codebases, consider using Ollama for fully local reviews instead.
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Ready to Try It?
Download Echoo for free and start transforming text with AI shortcuts.