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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
Introducing PromptPerfect, an innovative tool specifically crafted for enhancing prompts used with large language models (LLMs), large models (LMs), and LMOps. Crafting the ideal prompt can present challenges, yet it is essential for generating exceptional AI-driven content. Fortunately, PromptPerfect is here to assist you! This advanced tool simplifies the process of prompt engineering by automatically refining your prompts for various models, including ChatGPT, GPT-3.5, DALLE, and StableDiffusion. Regardless of whether you are a prompt engineer, a content creator, or a developer in the AI field, PromptPerfect ensures that prompt optimization is straightforward and user-friendly. Equipped with an easy-to-navigate interface and robust features, PromptPerfect empowers users to harness the complete capabilities of LLMs and LMs, consistently producing outstanding results. Embrace the shift from mediocre AI-generated content to the pinnacle of prompt optimization with PromptPerfect, and experience the difference in quality you can achieve!
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
KeyMate.AI
Midjourney
Stable Diffusion
Integrations
ChatGPT
DALL·E 2
GPT-3
GPT-3.5
GPT-4
KeyMate.AI
Midjourney
Stable Diffusion
Pricing Details
$60 one time
Free Trial
Free Version
Pricing Details
$9.99 per month
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
PromptPerfect
Website
promptperfect.jina.ai/