AI Tools

Free, browser-based AI tools. No sign-up, no tracking, no data sent to servers. Every tool runs entirely on your machine.

AI Prompt Builder

Build structured prompts for GPT-4, Claude, Gemini, and other AI models. Template-based prompt engineering with role, context, task, format, constraints, and examples. Copy-to-clipboard with token estimation.

Prompt Engineering

AI Model Comparison 2026

Interactive comparison of 12 major AI models with pricing, context windows, speed ratings, and capabilities. Includes cost calculator for your specific workload.

Model Selection

AI Benchmark Tracker

MMLU, HumanEval, GSM8K, MATH, and HellaSwag scores for 12 models. Color-coded table, SVG bar charts, and JSON/CSV data export.

Benchmarks

AI Model Database

Searchable database of 40+ AI models. Filter by type, provider, parameters, context window, and open-source status. Detailed model cards with full specs.

Database

Monthly AI API Cost Estimator — Project Spend for GPT, Claude & Gemini

Estimate monthly AI API costs based on your usage patterns. Configure requests, models, token sizes, and see projected spend across OpenAI, Anthropic, Google, and Mistral. Compare providers to find the cheapest option.

AI Prompt Debugger — Token-Level Analysis & Optimization

Debug and optimize AI prompts with token-level analysis. Identify wasteful tokens, redundant instructions, missing constraints, and structural issues. Get optimization suggestions with estimated cost savings.

System Prompt Library — Curated AI Prompts with Effectiveness Ratings

Browse 50+ curated system prompts for GPT-4o, Claude, and Gemini organized by category. Effectiveness ratings, copy-to-clipboard, and customization tips. Coding, writing, analysis, and more.

Multi-Model Token Counter — AI Cost Estimation for GPT, Claude & Gemini

Count tokens for GPT-4o, Claude Opus 4, Gemini 2.5 Pro, and 15+ AI models. Real-time cost estimation with input/output pricing per 1K tokens. Character, word, sentence, and paragraph counts. Free, no sign-up.

AI Coding Assistant Picker — Find Your Best Tool

5-question wizard recommends the best AI coding assistant for your workflow. Copilot, Cursor, Claude Code, Cody, or Windsurf — personalized recommendation based on language, team size, budget, IDE, and use case.

Tool Picker