Run any prompt on any model
Browse LMpad's prompt library and run templates on GPT, Claude, Gemini, Llama, and more via OpenRouter.
OpenRouter gives you one API for hundreds of models. LMpad pairs that with a visual prompt library—save, remix, and run without switching tools.
OpenRouter + LMpad workflow
One library, every model — how to switch LLMs without rewriting prompts.
- 1
Save the baseline
Store the original prompt on your pad before improving.
- 2
Run the improver
Use prompt-improver templates to diagnose missing role, format, and constraints.
- 3
A/B models
Run the same prompt on two models with the comparison template; save both outputs.
- 4
Version with remix
Duplicate before big edits so you can roll back.
- 5
Publish playbooks
Share generic engineering guides on your author page, not proprietary chains.
Use cases
AI builders
Benchmark prompts before shipping agent features.
Prompt freelancers
Client deliverables as pad folders with saved outputs.
Power users
Personal library of tuned templates across models.
Teams
Standardize on shared seed prompts; remix locally on each pad.
Pro tips
- →Change one variable at a time when testing.
- →Log failure cases in the prompt as 'avoid when…' bullets.
- →Read the OpenRouter guide for model selection tips.
LMpad tutorials
Step-by-step guides for using the site — pad, models, publishing, and more.
Why use LMpad for this
- Switch models without rewriting prompts
- Free tier models available without your own key
- Compare outputs with the model comparison prompt
Ready-to-run prompts
Copy, fill in {{variables}}, and run with your preferred model. How to run prompts →
Model Comparison Test Prompt
A standardized benchmark prompt to compare model outputs side by side.
Prompt Improver
Meta-prompt that rewrites weak prompts into clear, structured instructions.
Explain This Code Like I'm Junior
Break down complex code into plain English with analogies and a learning path.
Frequently asked questions
What is OpenRouter?+
An API gateway to many LLMs with one key and unified billing.
Do I need my own key?+
Free models may work with LMpad's site key; paid models need your key in Settings.
Can I save prompts locally?+
Signed-in users sync prompts to their pad via Turso.
Save prompts to your pad
LMpad is an AI prompt workspace synced to your account. Browse community templates, remix them on your pad, and run with OpenRouter.