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Token count is an approximation (~4 characters per token for English). Actual tokenization varies by model (e.g. GPT, Claude). Use this as a rough guide for prompt length and context limits. All processing runs in your browser; no data is sent to any server.
It uses a rough rule of thumb (~4 characters per token for English). Actual tokenization depends on the model (GPT, Claude, etc.), so treat it as an approximation for context limits.
No. All counting runs in your browser. Your text never leaves your device.
LLMs have context windows measured in tokens. Estimating tokens helps you stay within limits and plan prompt length before sending to an API.