Free Tools
AI Tools Tools
Token, cost and context-window tooling for people shipping AI features — plus structured generators for prompts, names and copy that run entirely without an API key.
AI Token Counter
Counts tokens in any text using a real BPE tokenizer, not a word-count approximation.
Prompt Token Estimator
Estimates tokens and single-call cost for a draft prompt against a chosen model.
AI API Cost Calculator
Projects monthly API spend from token volume, request rate and model choice.
Claude API Cost Calculator
Projects API spend across the Claude model family specifically.
AI Model Cost & Context Comparison
Compares per-token pricing and context window across major language models.
AI Context Window Calculator
Shows how much of each model's context window a document would consume.
AI ROI Calculator
Estimates return on investment from an AI feature based on task value and adoption.
AI Automation ROI Calculator
Estimates payback period for automating a manual workflow with AI.
System Prompt Builder
Assembles a well-structured system prompt from role, task, constraints and format fields.
Prompt Optimizer
Runs a heuristic check on a prompt and flags common structural weaknesses.
AI SaaS Name Generator
Generates brandable SaaS name candidates from a keyword using proven naming patterns.
AI Chatbot Name Generator
Generates approachable name candidates for a chatbot or AI assistant persona.
AI Cold Email Generator
Assembles a cold outreach email using the AIDA framework from your inputs.
AI FAQ Generator
Extracts candidate FAQ questions from pasted page content.
AI Benchmark Explorer
A reference table of published benchmark scores across major language models.
MCP Config Validator
Validates a Model Context Protocol server configuration for common structural errors.
CLAUDE.md Grader
Scores a CLAUDE.md file's structure and specificity against common best practices.
Slash Command Generator
Generates a Claude Code slash command file from a name, description and prompt.
Subagent Generator
Generates a Claude Code subagent definition file from role, tools and instructions.