Synthra

What it does

Synthra helps you turn rough ideas into well-structured AI prompts. Fill in a quick guided form, and Synthra optimizes your prompt using AI — ready to paste into ChatGPT, Gemini, or any AI tool. What you get: Guided prompt builder with 20+ templates Personalized results based on your profile Regenerate until it's perfect Completely free, no ads, no paywalls Built for anyone who uses AI tools and wants better results without the guesswork.

• AS
  A simple ChatGPT prompt builder2024 · mitenmit.github.io · ▲280

  Any Ideas/Suggestions are welcome :)

• 
  AI Prompt BuilderMar 2026 · understandingai.net · ▲24

  Free master prompts for ChatGPT, Claude, Gemini & more

• 
  Free AI Prompt GeneratorJun 2026 · aditsblogs.com · ▲3

  Turn rough ideas into perfect AI prompts in seconds

• 
  CLEAR Prompt BuilderJun 2026 · chiggle.academy · ▲3

  Generate better AI prompts in under a minute

• 
  PromptGen AIApr 2026 · promptgenai.in · ▲3

  Generate Intelligent prompts for any AI - fast and precise

• 
  PromptivityJun 2026 · promptivity.dk · ▲3

  Turn one sentence into a world-class AI prompt in 5 seconds

• 
  I trained a 125M model to autocomplete piano on-device▲598

  I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.

  AI · 17d ago · simedw.com

• 
  Astute▲585

  Automate your B2B brand going viral, with new media creators

  AI · 19d ago · company-app.joinastute.com

• 
  Grok Bot▲547

  AI teammates that you can give real work to

  AI · 26d ago · x.ai

• 
  Needle2: 14MB agentic LLM for phones, wearables, smart home and robots▲537

  Hey HN, Henry from Cactus here! We previously released Cactus Needle, a 14MB agentic LLM for tool call, device use, and structured extraction for phones, wearables, smart homes, small robots and microcontrollers. We got really great feedback here, and have now incorporated the suggestions to release Needle 2. The whole model is a single 14MB binary that runs a full session in 28MB of RAM; 45m parameters at 2bit compression. Needle hits 500 tokens/sec decode speed on a Raspberry Pi 5, sits between 400-1,500 tokens/sec on VR devices like Meta Quest 3S and Apple Vision Pro, and ranges…

  AI · 27d ago · cactuscompute.com

• 
  Monid▲474

  OpenRouter for agent tools

  AI · 7d ago · monid.ai

• 
  Clara AI SDR▲460

  Turn website visitors into qualified pipeline

  AI · 20d ago · clarasdr.ai

• 
  Fundraisly▲1,544

  AI fundraising agent that finds investors and books meetings

  AI · Jun 2026 · fundraisly.com

• H6
  Homebrew 6.0.0▲1,481

  Today, I’m proud to announce Homebrew 6.0.0. The most significant changes since 5.1.0 are a new tap trust security mechanism, the new faster, smaller, default internal Homebrew JSON API, sandboxing on Linux, better defaults informed by our user survey, many brew bundle improvements, improved performance and initial support for macOS 27 (Golden Gate). Happy to discuss any questions here!

  Dev tools · Jun 2026 · brew.sh

• PU
  Performative-UI – A react component library of design tropes▲1,181

  hope you enjoy

  Life & fun · Jun 2026 · vorpus.github.io

• 
  Upstream▲977

  The inbox designed for humans and agents

  AI · Jun 2026 · upstream.do

• 
  Goldfish▲962

  Press Option. It knows your work and replies like you

  AI · Jun 2026 · goldfish.sh

• IM
  I made Google Trends for Hacker News by indexing 18 years of comments▲822

  Life & fun · Jun 2026 · hackernewstrends.com