From loose question to working prompt
AI Promptimizer rewrites your input into a structured, AI-optimised prompt with role, task and output format. Free, no account required.
What is AI Promptimizer?
AI Promptimizer is a free web tool from SPAIK Labs that rewrites your prompt into a structured version that LLMs (Claude, ChatGPT, Gemini) understand better. Paste your question, press the button, get an AI-optimised prompt back. No signup, no vendor lock-in, no cost.
Under the hood, Promptimizer runs on the Anthropic platform and applies the patterns SPAIK collected across hundreds of client engagements: role framing, task scoping, explicit output requirements, and examples where useful.
Why Promptimizer?
Most people write prompts the way they write email: one long sentence, lots of context, no structure. That works for simple questions. For anything that needs to be consistent and repeatable, it doesn't.
Promptimizer doesn't force a template. It rewrites your prompt instead of imposing one, so you learn what a well-structured prompt looks like for your specific use case.
The tool is deliberately free: SPAIK uses it in training programmes, clients use it during implementation engagements, and developers use it to quickly give better instructions to their agents.
How it works
1. Paste your prompt
Up to 2,000 characters. No prior knowledge of prompt engineering required.
2. SPAIK engine rewrites
Promptimizer adds role, task context, output format and — where useful — examples.
3. Copy and use
Paste the result into Claude, ChatGPT or Gemini and see the difference in consistency and quality.
Who is it for?
Knowledge workers
Anyone using LLMs daily for production work and looking for more consistent output.
Developers
Builders of AI agents and applications who need better system prompts and tool instructions quickly.
Trainers and consultants
Anyone teaching others to work with AI — Promptimizer is a live example of prompt-engineering principles.
Under the hood
- Frontend on Next.js 15, React 19 and Tailwind
- Anthropic Claude for the prompt rewrite
- Supabase for analytics and rate limiting
- Hosted on Vercel with edge caching
Try it now
Open Promptimizer in a new tab and rewrite a prompt you've been stuck on. Then a conversation about what AI can do in your organisation?