PreperAi

What it does

Describe your idea in 2 sentences. PreperAi generates AI-powered personas you can actually chat with — hear their objections, validate your assumptions, and stop building the wrong thing. Free to start. No credit card needed.

Talk to 5 AI-powered customer personas and synthetic users to validate your startup idea. Run fast AI market research, uncover objections, and test buyer assumptions before you build.

• 
  AI Persona Chat2023 · apps.apple.com · ▲113

  Where conversations come alive

• 
  PromptVerse2025 · ▲12

  Your personal AI workspace

• 
  Persona2024 · prsna.app · ▲9

  Space for AI Personas - generate, share, chat

• IM
  I made a conversational AI for interview prep2025 · speakfast.ai · ▲8

  SpeakFast helps you prep by actually talking—not just reading tips or recording yourself. The AI interviews you, challenges you in real time, and gives coaching based on how you're doing. It can even build a custom roadmap around your weak spots. There are 200K+ real roles from top tech companies to practice with. You can also paste a job description and get a tailored mock interview instantly. It’s composable, flexible, and built to feel real

• AU
  AI User Persona Generator2024 · featuredgpts.com · ▲11

  Let's be honest for a second. You hate doing user interviews You still want to get customer insights That's why we built this GPTs - AI User Persona Generator. So you can get incredible marketing insights from your ideal customers in 5 minutes (instead of 50 hours). You just need to provide your website or tell what your business is about. AI will handle the rest. Try it now https://chat.openai.com/g/g-SKdgK3Apk-ai-user-persona-genera...

• 
  PersonaMixJan 2026 · personamix.com · ▲13

  AI personas debate your ideas from different perspectives

• 
  Spira Maxima▲578

  Video model that turns script into viral social media videos

  AI · 17d ago · spira.ai

• 
  Rill Browser▲540

  The browser where Claude Code and Codex work beside you

  AI · 17d ago · rill.love

• 
  Germany's new sovereign AI model Kolibri▲424

  Kolibri is Aleph Alpha

  AI · 19d ago · tej.as

• 
  Giving Opus 5.5 a simulated paint canvas▲392

  Paintings by AI models: programs run through a simulation of oil paint.

  AI · 20d ago · stillwet.art

• 
  PixVerse R2▲381

  A real-time world model you can explore and change

  AI · 29d ago · world.pixverse.video

• 
  Hemory▲381

  Keep listening. Searchable memory for your AI agents.

  AI · 30d ago · hemory.com

• 
  Brew ▲900

  Like Claude design for email marketing

  AI · May 2026 · brew.new

• 
  Kilo Code for VS Code▲896

  Parallel agents, diff reviewer, and multi-model comparisons

  Dev tools · May 2026 · kilo.ai

• 
  StoreClaw▲806

  Grow your store profits with agents that know how to sell

  AI · May 2026 · storeclaw.ai

• 
  PollyReach▲795

  Give your agent a real number and voice to make calls.

  AI · May 2026 · pollyreach.ai

• 
  Needle: We Distilled Gemini Tool Calling into a 26M Model▲776

  Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…

  Life & fun · May 2026 · github.com

• 
  Files.md – Open-source alternative to Obsidian▲730

  🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md

  Dev tools · May 2026 · github.com