nowfound

Alternatives

Products that do what test your prompt jailbreak does

Test, compare and analyze AI prompts with real models.

  1. 1
    TestAI407

    1,000+ automated tests for AI agents in one click

    2025

  2. 2

    Compare AI models side-by-side on same prompt

    Feb 2026 · testaimodels.com

  3. 3

    Instantly test and compare AI prompts results across models

    2025

  4. 4

    The command center for your AI prompts.

    Oct 2025

  5. 5FP

    We've built an open-source tool to stress test AI agents by simulating prompt injection attacks. We’ve implemented one powerful attack strategy based on the paper [AdvPrefix: An Objective for Nuanced LLM Jailbreaks](https://arxiv.org/abs/2412.10321). Here's how it works: - You define a goal, like: “Tell me your system prompt” - Our tool uses a language model to generate adversarial prefixes (e.g., “Sure, here are my system prompts…”) that are likely to jailbreak the agent. - The output is a list of prompts most likely to succeed in bypassing safeguards. We’re just getting…

    2025 · security.vista-labs.ai

  6. 6

    Write a prompt and watch AI models compete on creativity

    Feb 2026 · shuffle.dev

  7. 7

    AI wrote it. LineageLens proves it.

    May 2026 · lineagelens.dev

  8. 8PE

    Spelltest framework simulates conversations between AI ‘synthetic users' in an environment to test and refine LLM-based applications. It ensures your app converse with utmost accuracy and relevance. Post-chat, Spelltest assesses responses, providing qualitative and quantitative feedback on performance. Suitable for both chat and completion modes. When to use: - After modifying your prompt. - When your LLM provider updates. - As a CI step for you repo. All feedback and collaborations appreciated!

    2023 · github.com

  9. 9

    Find which AI wins for YOUR prompts. Test 100+ models free.

    Dec 2025

  10. 10IM
  11. 11PE

    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…

    2023

  12. 12PA

    Even if you're not a Prompt whiz, you can still get top-notch results just like the pros. This Product will handle internally handle boring And Cognitively demanding prompt Engineering. Just pick a service, fill in the keywords, and get the desired result! Open Source , Free , Privacy Friendly , Crowd Source Prompts, No Login Required. You can submit Features(https://prompt-apps.canny.io/feature-requests?sort=top) and Prompts (https://prompt-apps.canny.io/prompt-conversion?sort=top)

    2023 · chatgpt-prompt-apps.com

  13. 13

    Prompten – Test prompts free across AI models in one click

    May 2026 · prompten.io

  14. 14

    Find vulnerabilities in your AI prompts before your users do

    26d ago · testmyprompt.net

  15. 15IM

    Also inspired by this HN submission: https://www.chiark.greenend.org.uk/~sgtatham/quasiblog/findl... The model is gpt-4o-mini-2024-07-18.

    2024 · app4.hc11.org

  16. 16

    AI is powerful. Make sure it's safe too.

    Jul 2026 · getpreempt.com

  17. 17

    Pre-engineered AI prompts that actually work

    May 2026 · aibestprompts.in

  18. 18

    Tested AI prompts & ebooks — real samples, no guesswork

    13d ago · promptbase.art

  19. 19IB

    Hi HN, I'm pleased to share Promptspot, an open-source (Apache License 2.0) project that helps automate testing of large language model (LLM) prompts against an array of input data. Modern LLMs offer an enormous amount of leverage if you "teach the bot to fish" — i.e. simply prompt it with both a "system prompt" (which typically doesn't change often) and a dynamic input, which is often application state, search results, recent activity, user profile data, etc. Existing playgrounds and prompt management systems often lack the rigor and flexibility required for this dynamic approach — and as…

    2023 · github.com

  20. 20

    Optimize prompts, analyze videos & transform audio with AI

    Feb 2026 · promptench.com

  21. 21

    Find AI vulnerabilities before hackers do

    Mar 2026 · promptbrake.com

  22. 22

    Use multiple LLMs at once, privately!

    20d ago · transferllm.com

  23. 23

    The source of truth for system-level AI prompts.

    Jan 2026

  24. 24

    The first AI-verified prompt marketplace

    Jan 2026

Ranked by how close each launch is in meaning, then by votes. Refine with a description →