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Description
LangFast is a streamlined prompt testing platform aimed at product teams, prompt engineers, and developers working with large language models. It offers immediate access to a customizable prompt playground without requiring signup, making prompt experimentation quick and hassle-free. Users can create, test, and share prompt templates using Jinja2 syntax, while receiving real-time raw outputs directly from the LLM, avoiding complicated API layers. This reduces the friction typically associated with manual prompt testing, allowing teams to validate and iterate faster. Developed by a team experienced in scaling AI SaaS products to millions of users, LangFast provides full control over the prompt development lifecycle. The platform also fosters improved team collaboration by enabling easy sharing and iteration. Its pay-as-you-go pricing ensures users only pay for what they use, keeping budgets under control. LangFast is ideal for teams seeking a flexible, cost-effective solution for prompt engineering.
Description
PromptPerfekt is a specialized tool aimed at assisting users in formulating accurate and impactful prompts for large language models and other AI technologies. It includes features such as automatic prompt enhancement, compatibility with various AI systems like ChatGPT, GPT-3/3.5/4, DALL-E 2, Stable Diffusion, and MidJourney, as well as customizable multi-goal optimization to meet diverse requirements. The platform is capable of delivering refined prompts in under 10 seconds and offers support for multiple languages, ensuring it can be beneficial for users around the world. Additionally, PromptPerfekt boasts a user-friendly API and data export functionalities, which facilitate smooth integration into current workflows, enhancing productivity and efficiency. This makes it an invaluable resource for anyone looking to maximize the effectiveness of their AI interactions.
API Access
Has API
API Access
Has API
Screenshots View All
No images available
Integrations
ChatGPT
DALL·E 2
GPT-3
GPT-3.5
GPT-4
Midjourney
Stable Diffusion
Integrations
ChatGPT
DALL·E 2
GPT-3
GPT-3.5
GPT-4
Midjourney
Stable Diffusion
Pricing Details
$60 one time
Free Trial
Free Version
Pricing Details
No price information available.
Free Trial
Free Version
Deployment
Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook
Deployment
Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook
Customer Support
Business Hours
Live Rep (24/7)
Online Support
Customer Support
Business Hours
Live Rep (24/7)
Online Support
Types of Training
Training Docs
Webinars
Live Training (Online)
In Person
Types of Training
Training Docs
Webinars
Live Training (Online)
In Person
Vendor Details
Company Name
Langfa.st
Founded
2025
Country
United States
Website
langfa.st/new
Vendor Details
Company Name
Perfekt Prompt
Country
United States
Website
promptperfekt.com