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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

Parea is a prompt engineering platform designed to allow users to experiment with various prompt iterations, assess and contrast these prompts through multiple testing scenarios, and streamline the optimization process with a single click, in addition to offering sharing capabilities and more. Enhance your AI development process by leveraging key functionalities that enable you to discover and pinpoint the most effective prompts for your specific production needs. The platform facilitates side-by-side comparisons of prompts across different test cases, complete with evaluations, and allows for CSV imports of test cases, along with the creation of custom evaluation metrics. By automating the optimization of prompts and templates, Parea improves the outcomes of large language models, while also providing users the ability to view and manage all prompt versions, including the creation of OpenAI functions. Gain programmatic access to your prompts, which includes comprehensive observability and analytics features, helping you determine the costs, latency, and overall effectiveness of each prompt. Embark on the journey to refine your prompt engineering workflow with Parea today, as it empowers developers to significantly enhance the performance of their LLM applications through thorough testing and effective version control, ultimately fostering innovation in AI solutions.

API Access

Has API

API Access

Has API

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Screenshots View All

Integrations

OpenAI

Integrations

OpenAI

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

Parea

Website

www.parea.ai/

Product Features

Alternatives

Alternatives