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What is LangFast?

LangFast is a lightweight yet powerful prompt testing platform tailored for product teams, prompt engineers, and developers working extensively with large language models (LLMs). Offering instant, no-signup access to a fully customizable prompt playground, it simplifies the creation and testing of prompt templates using Jinja2 syntax. Users can see real-time raw outputs directly from the LLM without any API abstractions, enabling precise control and immediate feedback. By eliminating manual testing friction, LangFast allows teams to validate prompts, iterate rapidly, and collaborate more effectively on prompt development projects. Created by a team with a proven track record of scaling AI SaaS platforms to over 15 million users, the platform emphasizes control and scalability. LangFast supports seamless sharing of prompt templates, making teamwork intuitive and efficient. Its simple pay-as-you-go pricing model ensures cost predictability and accessibility for teams of all sizes. The platform’s clean and lightweight design means it can be integrated easily into existing workflows without overhead. LangFast empowers teams to accelerate innovation in prompt engineering while managing expenses effectively. This makes it an ideal choice for organizations looking to enhance their AI-driven product development with flexible and transparent prompt testing.

What is DataLang?

Connect your data sources and create data views through SQL scripts, then set up a GPT Wizard, design a custom GPT, and share it with your users, employees, or clients. By selectively exposing a specific range of data through SQL, you can effectively train GPT to interact with you using everyday language. The process for extracting data insights has become remarkably effortless; with simple steps, DataLang takes on the intricate tasks for you. Begin by establishing your connection string and assigning it a distinct name. Use SQL to train GPT with your unique data entries, select relevant data sources to enhance its training, and engage with your information in real-time via GPT. Develop personalized GPT Assistants to streamline discussions about your data. Moreover, you can configure a GPT for smooth sharing with your users or customers. Your connection string credentials are securely stored and decrypted only when required for data operations, underscoring our dedication to protecting your information. You can ask DataLang almost any question a data analyst could answer, transforming it into an essential resource for data-driven queries and decisions. Experience a new level of engagement with your data and uncover insights effortlessly, all while fostering a more intuitive interaction with your information.

Media

No images available

Media

Integrations Supported

GPT-3
GPT-4
SQL

Integrations Supported

GPT-3
GPT-4
SQL

API Availability

Has API

API Availability

Has API

Pricing Information

$60 one time
Free Trial Offered?
Free Version

Pricing Information

$19 per month
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Langfa.st

Date Founded

2025

Company Location

United States

Company Website

langfa.st/new

Company Facts

Organization Name

DataLang

Company Location

United States

Company Website

datalang.io

Categories and Features

Categories and Features

Database

Backup and Recovery
Creation / Development
Data Migration
Data Replication
Data Search
Data Security
Database Conversion
Mobile Access
Monitoring
NOSQL
Performance Analysis
Queries
Relational Interface
Virtualization

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