Tool 03 · context planning

Know how much of the context window your text will use.

Paste a sample, get a rough token estimate, and see how much room remains for instructions and the model’s answer.

Paste your text

This is a language-agnostic approximation using roughly four characters per token. Provider tokenizers may differ.

Paste text on the left to estimate tokens and remaining context.

Estimate API costPlan a RAG system