▸ Free tool
Token Counter.
Paste text, get an instant estimate of how many tokens it costs across Claude and GPT models. Nothing leaves your browser.
▸ Estimate, not exact
Uses the ~4 chars/token heuristic. Real tokenizers vary ±10-20%. For billing precision, count with the provider's tokenizer.
▸ Estimate
- ~ Tokens
- 0
- Characters
- 0
- Words
- 0
As input, once
- Claude Opus$0
- Claude Sonnet$0
- GPT-4o$0
- GPT-4o mini$0