PROMPTMETHEUS

What it does

Compose, test, and evaluate one-shot prompts for the OpenAI API and other LLM platforms (Anthropic, Cohere, etc.) that predictably transform input to output. No code required. Full traceability of prompt design and powerful performance statistics.

Compose, test, and optimize prompts for your LLM-powered applications, agents, and workflows. Supports 100+ models, prompt versioning, automatic evaluations, and more.

Compose reliable prompts for your AI automations , agents, and workflows. Test prompt performance with 150+ LLMs, or configure your own. Optimize prompts for output quality, robustness, cost, and speed. We ship 15 providers out of the box, but you can also easily configure your own . Compose structured prompts from text and data blocks and rapidly iterate through versions with block variants. Configure custom evaluators to automatically validate completions against the specified requirements. Organize dynamic context like user input or retrieved data into datasets and inject it into prompts via data blocks. Organize prompts, datasets, and completions into projects and track relevant…from promptmetheus.com

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  PromptForge2025 · github.com · ▲474

  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…

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  PrompTessor2025 · promptessor.com · ▲125

  After countless hours of solo coding, designing, and iterating, I’m both excited and nervous to share my first-ever product: PrompTessor — now live. As someone who constantly experiments with AI tools like ChatGPT and Midjourney, I often found myself stuck in a loop of trial-and-error. The issue wasn’t always the AI — it was often the prompt itself. That observation became the starting point for PrompTessor. This tool doesn’t just optimize your prompt — it analyzes it. It gives you: - A prompt score - A breakdown of strengths and weaknesses - A fully optimized version of your prompt - And…

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  Hegel AI Prompt Playground2023 · ▲25

  Experiment with, and evaluate, prompts and LLMs

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  Promptfoo – CLI for testing & improving LLM prompt quality2023 · github.com · ▲14

  Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative configs with command line and CI/CD integration. Used by OpenAI and Anthropic. - promptfoo/promptfoo

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  Promptly – Prompt Management Platform for LLM Apps2023 · trypromptly.com · ▲15

  We are excited to show Promptly (https://trypromptly.com), a prompt management platform for LLM apps that makes it easy to experiment, share and manage prompts in production. With Promptly, users can: - Try out different prompts and model parameters for various providers - Quickly share prompt snippets together with parameters and generated output. Think of it as CodePen or JSFiddle for prompts - Create high level endpoints on top of provider APIs (Open AI, DreamStudio etc) with templated and versioned prompts - Use built-in caching for endpoints that will help save on Open AI…

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  ChatGPT Prompt Engineering for Developer2023 · deeplearning.ai · ▲16

  New course created together by DeepLearning.ai and OpenAI

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  Hi HN, Today we’re launching GPT-4 answers on Phind.com, a developer-focused search engine that uses generative AI to browse the web and answer technical questions, complete with code examples and detailed explanations. Unlike vanilla GPT-4, Phind feeds in relevant websites and technical documentation, reducing the model’s hallucination and keeping it up-to-date. To use it, simply enable the “Expert” toggle before doing a search. GPT-4 is making a night-and-day difference in terms of answer quality. For a question like “How can I RLHF a LLaMa model”, Phind in Expert mode delivers a…

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