PromptForge
PromptForge: Open-source AI prompt engineering workbench with systematic evaluation I built PromptForge after getting frustrated with the manual trial-and-error approach to prompt engineering. Most tools are just text editors, but I wanted something that brings software engineering discipline to prompt development. Key technical features: - AI-assisted prompt generation (stop starting from scratch) - Systematic evaluation engine that auto-generates test suites - Multi-model support (Claude, GPT-4, Azure OpenAI) - Go backend with SQLite for performance and simplicity - One-line Docker…
PromptForge launched on July 6, 2025 with 474 votes, #36 of 9,224 launches that month and more than 99% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
PromptForge is an AI prompt engineering workbench designed for developers who need to create, test, and evaluate prompts systematically. The platform provides analysis tools to help users refine their prompts and measure their effectiveness. It supports workflow automation and optimization for those working with AI models and language processing tasks.
written from the facts on this page · September 2026
From the sources
AI prompt engineering workbench for crafting, testing, and systematically evaluating prompts with powerful analysis tools. - insaaniManav/prompt-forge
Stop writing prompts from scratch. Let AI help you craft better prompts, then systematically validate them. Built with Go for speed and reliability. Most prompt tools are glorified text editors. PromptForge brings engineering discipline to prompt development: docker run -d -p 8080:8080 -e ANTHROPIC_API_KEY= " your-key " ghcr.io/insaanimanav/prompt-forge:main Or clone and run: git clone https://github.com/insaanimanav/promptforge.git cd promptforge && ./start.sh Open http://localhost:8080 and start crafting better prompts. # Anthropic (Default) -e ANTHROPIC_API_KEY= " sk-ant-api03-... " # OpenAI -e OPENAI_API_KEY= " sk-... " # Azure OpenAI -e AZURE_OPENAI_API_KEY= " your-key " -e…from github.com
In the maker’s words, at launch
PromptForge: Open-source AI prompt engineering workbench with systematic evaluation I built PromptForge after getting frustrated with the manual trial-and-error approach to prompt engineering. Most tools are just text editors, but I wanted something that brings software engineering discipline to prompt development.…
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Prompt Engineering Studio2025 · portkey.ai · ▲501Build, test & deploy AI prompts across 1600+ models at scale
ChainForge, a visual tool for prompt engineering and LLM evaluation2023 · chainforge.ai · ▲177Hi HN! We’re been working hard on this low-code tool for rapid prompt discovery, robustness testing and LLM evaluation. We’ve just released documentation to help new users learn how to use it and what it can already do. Let us know what you think! :)

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PromptForgeJun 2026 · promptforge-navy-psi.vercel.app · ▲414 AI tools, your own API key, zero subscription
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Hey HN, We've been hard at work on a tool that we believe will change the game for developers, data scientists, and anyone working with models that rely on textual prompts. I'm excited to introduce our new tool: Automated Prompt Engineering (APE). Problem: As many of you know, how you phrase a prompt can significantly impact the results you get from models, especially with sophisticated language models. It often requires numerous iterations to hone in on the right prompt to obtain the desired response. Solution: APE is designed to tackle this exact problem. With APE, you can: - Iterative…
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