Langfa.st vs. AllForms
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.
AllForms
AllForms is an all-in-one SaaS tool providing legally binding e-signing, appointment scheduling, unlimited forms, AI chat, SEO tools, and much more. AllForms is an all-in-one SaaS tool providing legally binding e-signing, appointment scheduling, unlimited forms, AI chat, SEO tools, and much more. AllForms is an all-in-one SaaS tool providing legally binding e-signing, appointment scheduling, unlimited forms, AI chat, SEO tools, and much more.
Reviews
Reviews
| Item | Votes | Upvote |
|---|---|---|
| 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 |
|---|---|---|
| No custom API key support (yet) | 1 | |
| Not ideal for running complex multi-turn chats | 1 |
| Item | Votes | Upvote |
|---|---|---|
| No pros yet, would you like to add one? | ||
| Item | Votes | Upvote |
|---|---|---|
| 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 built-in support for variables and Jinja2 templating, making it ideal for prompt engineers. In contrast, AllForms is an all-in-one SaaS tool focused on e-signing, appointment scheduling, and form management, which may not cater specifically to AI prompt testing needs. Therefore, for AI prompt testing, Langfa.st is the better choice.
Yes, AllForms provides a range of features such as legally binding e-signing, appointment scheduling, and unlimited forms, which are not available in Langfa.st. While Langfa.st focuses on AI prompt testing and model comparison, AllForms serves a broader purpose as a comprehensive SaaS tool for various business needs. If you require functionalities beyond AI prompt testing, AllForms would be more suitable.
Langfa.st is designed for quick AI experiments with its instant response feature and no setup required, making it very user-friendly for prompt testing. AllForms, while user-friendly in its own right, is more complex due to its multiple functionalities, which may not be as streamlined for quick AI experiments. Therefore, Langfa.st is the more user-friendly option for those specifically looking to experiment with AI prompts.
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.
AllForms is an all-in-one SaaS tool that provides a variety of features including legally binding e-signing, appointment scheduling, unlimited forms, AI chat, and SEO tools. It is designed to streamline various business processes and improve efficiency.
The main features of AllForms include legally binding e-signing, appointment scheduling, unlimited forms creation, AI chat capabilities, and SEO tools. These features make it a comprehensive solution for businesses looking to manage their operations more effectively.
Currently, there are no user-generated pros and cons available for AllForms. However, potential pros may include its all-in-one functionality and ease of use, while potential cons could involve pricing or specific feature limitations depending on user needs.
AllForms can benefit a wide range of users including small business owners, freelancers, and organizations that require efficient document management, scheduling, and customer interaction tools. Its comprehensive features cater to various industries.
