Token Counter
Count a prompt's real tokens (OpenAI's cl100k_base tokenizer, run locally) against common context windows.
Processed locally in your browser. Nothing you add is uploaded.
More AI & Prompts tools
- Prompt Builder: Assemble a well-structured prompt from role, task, context, constraints and examples.
- Prompt Analyzer: A rule-based checklist against known prompt-engineering advice -- not an AI call.