LangFastLangfa.st
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Related Products
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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.
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About
Prompeteer Contextual Intelligence Platform is a contextual AI platform for A+ agentic prompts and skills. It enables individuals and enterprises to build production-ready prompts and agent skills for ChatGPT, Claude, Gemini, Perplexity, Grok, Meta AI, Copilot, Cursor, Replit, and 140+ AI platforms. Simply type your request in plain language and Prompeteer instantly transforms it into an expert-level prompt—context-powered, quality-scored, and ready to deploy. Features include multimodal prompt creation (text, code, data, image, video, audio), Prompt Score for objective quality evaluation, PromptDrive for saving and organizing prompts, Agent Skills (production-ready SKILL.md files), seamless workflow integrations, and support for 100+ languages. Trusted by tens of thousands of professionals and enterprises in 157 countries. GDPR & CCPA compliant, 100% private, with a free version available.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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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.
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Audience
Professionals, knowledge workers, developers, enterprises, marketers, data scientists, legal teams, educators, and anyone looking to maximize their AI productivity across ChatGPT, Claude, Gemini, and other AI platforms.
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and VideosNo images available
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Screenshots and VideosNo images available
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Pricing
$60 one time
Free Version
Free Trial
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Pricing
Free / Premium Plans
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company InformationLangfa.st
Founded: 2025
United States
langfa.st/new
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Company InformationPrompeteer.ai
Founded: 2025
United States
prompeteer.ai
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Alternatives |
AlternativesNo Alternatives
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Categories |
Categories |
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Integrations
No info available.
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Integrations
No info available.
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