Langfa.st vs. CodeMetrics
Langfa.st
Langfa.st is a fast and minimal playground for testing and refining AI prompts. It supports over 50 large language models, including OpenAI, Anthropic, Mistral, Cohere, Google, and others — all available instantly without setup. You can insert variables, use Jinja2 templating, and compare outputs across models. There’s no need to sign up or bring your own API keys — it works out of the box. Langfa.st was built to eliminate the friction of existing tools: complicated UIs, required credentials, or overpriced subscriptions. It gives AI teams and prompt engineers a clean, disposable space to experiment, debug, and iterate — all in one tab. Free to use. You only pay if you need more volume or power features.
CodeMetrics
CodeMetrics shows you the cognitive complexity of your JavaScript and TypeScript code. If the complexity is too high, you know you need to refactor or simplify.
Reviews
Reviews
Reviewed on 3/13/2024
I love this extension and use it on a daily basis. I honestly feel kind of lost without it.
Item | Votes | Upvote |
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Works without login or API key | 1 | |
Supports 50+ models out of the box | 1 | |
Built-in support for variables and Jinja2 templating | 1 | |
Instant response, no setup required | 1 | |
Clean and distraction-free UI | 1 |
Item | Votes | Upvote |
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No custom API key support (yet) | 1 | |
Not ideal for running complex multi-turn chats | 1 |
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No pros yet, would you like to add one? |
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No cons yet, would you like to add one? |
Frequently Asked Questions
Langfa.st is specifically designed for testing and refining AI prompts, supporting over 50 large language models without the need for login or API keys. It offers a clean UI and instant responses, making it ideal for AI teams and prompt engineers. In contrast, CodeMetrics focuses on analyzing the cognitive complexity of JavaScript and TypeScript code, helping developers identify areas that need refactoring. Therefore, if your primary focus is on AI prompt engineering, Langfa.st would be the better choice, while CodeMetrics is more suited for developers looking to improve code quality.
Langfa.st is designed to be user-friendly with a clean and distraction-free UI, allowing users to experiment with AI prompts without any setup or login requirements. CodeMetrics, while useful for analyzing code complexity, may require a deeper understanding of coding principles to effectively utilize its features. Thus, for ease of use, Langfa.st is likely the more user-friendly option.
Yes, Langfa.st and CodeMetrics can complement each other effectively. Langfa.st allows developers to test and refine AI prompts, while CodeMetrics helps ensure that the underlying JavaScript or TypeScript code is maintainable and not overly complex. Using both tools can enhance the overall development process by improving both AI interactions and code quality.
Langfa.st is a fast and minimal playground for testing and refining AI prompts. It supports over 50 large language models, including OpenAI, Anthropic, Mistral, Cohere, Google, and others — all available instantly without setup. Users can insert variables, use Jinja2 templating, and compare outputs across models without needing to sign up or provide API keys.
Pros of Langfa.st include: it works without login or API key, supports over 50 models out of the box, has built-in support for variables and Jinja2 templating, provides instant responses with no setup required, and features a clean and distraction-free user interface.
Cons of Langfa.st include the lack of custom API key support at this time and it may not be ideal for running complex multi-turn chats.
Langfa.st is particularly beneficial for AI teams and prompt engineers who need a clean, disposable space to experiment, debug, and iterate on AI prompts without the friction of complicated UIs or required credentials.
Yes, Langfa.st is free to use. Users only pay if they need more volume or access to power features.
CodeMetrics is an extension for Visual Studio Code that measures the cognitive complexity of your JavaScript and TypeScript code. It helps developers identify complex code that may need refactoring or simplifying.
Currently, there are no user-generated pros and cons for CodeMetrics.
Yes, many developers find CodeMetrics very useful. For instance, one user mentioned that they love the extension and use it daily, feeling kind of lost without it.