Free AI Prompt Library - ChatGPT, Claude, Gemini
Library of 194 free AI prompts for ChatGPT, Claude and Gemini. Sorted by category, one-click copy, no signup required.
Looking for free AI prompts that actually work? Our library gathers 194 prompts tested and optimized for ChatGPT, Claude and Gemini. Everything is 100% free - no signup, no copy limit.
Every prompt is sorted by category (writing, productivity, marketing, code, education…) and comes with concrete examples. You save time by reaching for proven formulations instead of trial-and-error each time.
100% free
No paywall, no mandatory signup to copy a prompt.
Multi-AI
Every prompt works with ChatGPT, Claude, Gemini and Mistral.
Categorized
Filter by topic, difficulty and use case.
Bilingual
Available in French and English, tailored to each audience.
Showing 25-36 of 194 prompts
Handle concept drift in models
Maintain model performance over time
Build a forecasting model
Forecast time series data
Analyze feature importance
Understand model feature importance
Implement cross-validation correctly
Avoid data leakage in evaluation
Evaluate a regression model
Evaluate regression model performance
Build a stacking ensemble
Build ensemble models
Tune hyperparameters with Optuna
Optimize model hyperparameters
Compare multiple classifiers
Find the best model for a classification task
Normalize features for deep learning
Prepare data for deep learning
Generate interaction features
Discover feature interactions
Build text features with NLP
Extract features from text data
Apply dimensionality reduction
Reduce high-dimensional data