Prompt Word to Token Ratio Calculator

LLM Token Counter

Estimate token counts for GPT, Claude, Gemini, Llama and Mistral — instantly, in your browser.

Context Window Visualizer

See how system prompts, examples, retrieval chunks, and output reserve fit inside a model context window.

LLM Prompt Cost Estimator

Estimate the daily and monthly USD cost of running prompts across GPT-4, Claude, Gemini, Llama and Mistral.

Tokens Per Second Visualizer

Visualize queue time, first-token latency, and token throughput for AI responses.

AI Output Detector Readability Score

Score text for readability and heuristic AI-likeness signals — useful for editorial QA.

System Prompt Builder

Build stable system prompts with role, goal, constraints, tone, examples, and output format.