LangFast

LangFast

Langfa.st
+
+

Related Products

  • DbVisualizer
    583 Ratings
    Visit Website
  • Google Cloud BigQuery
    2,017 Ratings
    Visit Website
  • Google Cloud SQL
    553 Ratings
    Visit Website
  • Quickbase
    3,009 Ratings
    Visit Website
  • RaimaDB
    12 Ratings
    Visit Website
  • Teradata VantageCloud
    1,122 Ratings
    Visit Website
  • Couchbase
    412 Ratings
    Visit Website
  • Google Cloud Platform
    61,011 Ratings
    Visit Website
  • Apify
    1,441 Ratings
    Visit Website
  • ScreenMeet
    34 Ratings
    Visit Website

About

Connect your data sources, configure some data views (i.e. SQL scripts), configure a GPT Wizard, create a custom GPT, and share it with your users, employees, or clients. Expose a specific set of data (using SQL) to train GPT, and then chat with it in natural language. Data insights just got a whole lot easier, you can follow simple steps and let DataLang do the heavy lifting. Configure your connection string and give it a name. Use SQL to train GPT with your own data rows, select the data sources to train GPT with, and leverage GPT to talk to your data in real time. Create custom GPT Assistants to chat with your data. Configure a GPT to share it with your users, or customers. Your connection string credentials are securely encrypted in our system and only decrypted when necessary for data operations. We are committed to the security and confidentiality of your information. You can ask DataLang almost any question you would ask a data analyst.

About

LangFast is a lightweight prompt testing platform designed for product teams, prompt engineers, and developers working with LLMs. It offers instant access to a customizable prompt playground—no signup required. Users can build, test, and share prompt templates using Jinja2 syntax with real-time raw outputs directly from the LLM, without any API abstractions. LangFast eliminates the friction of manual testing by letting teams validate prompts, iterate faster, and collaborate more effectively. Built by a team with experience scaling AI SaaS to 15M+ users, LangFast gives you full control over the prompt development process—while keeping costs predictable through a simple pay-as-you-go model.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Anyone in need of a tool to chat with their databases and create custom GPTs

Audience

Product teams, software engineers, prompt engineers, AI developers, ML researchers, startup founders, and technical writers working on AI-powered features or language model integrations.

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

$19 per month
Free Version
Free Trial

Pricing

$60 one time
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

DataLang
United States
datalang.io

Company Information

Langfa.st
Founded: 2025
United States
langfa.st/new

Alternatives

Alternatives

LangGraph

LangGraph

LangChain
bipp

bipp

bipp analytics

Categories

Categories

Integrations

GPT-3
GPT-4
SQL

Integrations

GPT-3
GPT-4
SQL
Claim DataLang and update features and information
Claim DataLang and update features and information
Claim LangFast and update features and information
Claim LangFast and update features and information