Ory vs. Langfa.st
Ory
Ory is an API-first identity manager. They offer authentication, analytics, access control, machine-to-machine authentication and more. They have SDKs for the major languages: - Dart - .NET - Elixir - Go - Java - JavaScript - PHP - Python - Ruby - Rust Unfortunately, they don't offer a free tier. Pricing starts at $29/month and includes 1,000 daily active users. Then it's $30 / 1,000 additional DAUs.
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.
Reviews
Reviews
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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 |
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| No custom API key support (yet) | 1 | |
| Not ideal for running complex multi-turn chats | 1 |
Frequently Asked Questions
Ory is primarily an API-first identity manager focused on authentication and access control, making it less suitable for AI prompt testing. In contrast, 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. If your goal is to experiment with AI prompts, Langfa.st is the better choice.
Langfa.st offers a free tier, allowing users to test and refine AI prompts without any upfront costs. Ory, however, does not provide a free tier; its pricing starts at $29/month for 1,000 daily active users. Therefore, if budget is a concern, Langfa.st is the more accessible option.
Langfa.st is designed for quick and minimal AI experimentation, featuring a clean and distraction-free UI that allows users to test prompts instantly without setup. Ory, being an identity management platform, is not tailored for quick AI experimentation and may require more configuration. Thus, Langfa.st is the more user-friendly option for this purpose.
Ory provides extensive SDK support for major programming languages, including Dart, .NET, Java, and Python, making it a strong choice for developers needing integration capabilities. Langfa.st, while excellent for AI prompt testing, does not focus on SDK support. Therefore, for developers looking for robust SDK options, Ory is the better choice.
Ory is an API-first identity manager that offers services such as authentication, analytics, access control, and machine-to-machine authentication. It supports several programming languages with SDKs, including Dart, .NET, Elixir, Go, Java, JavaScript, PHP, Python, Ruby, and Rust.
Ory supports a wide range of programming languages with its SDKs, including Dart, .NET, Elixir, Go, Java, JavaScript, PHP, Python, Ruby, and Rust.
Ory does not offer a free tier. The pricing starts at $29 per month, which includes 1,000 daily active users (DAUs). For each additional 1,000 DAUs, it costs $30.
Ory provides a variety of services including authentication, analytics, access control, and machine-to-machine authentication.
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.
