Context Window Visualizer

LLM Token Counter

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

LLM Latency Budget Calculator

Estimate request latency from prompt size, output size, throughput, queue time, and safety margin.

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.

Prompt Word to Token Ratio Calculator

Convert human word counts into LLM token estimates and compare models side-by-side.

AI Output Detector Readability Score

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