OpenAI Token Counter — Check GPT-4, Claude & LLM Token Costs

Paste your prompt and instantly see the exact token count for GPT-4, GPT-3.5, Claude, and open-source models. Estimate API costs before you spend. Runs locally in your browser — your prompts stay private.

Keywords: token calculator, token count, openai tokens, llm tokens, prompt cost

Frequently Asked Questions

How accurate is the token count?

Counts are model-specific based on the tokenizer. Results match official tokenization for supported models.

Is my text uploaded?

No. Tokenization happens in your browser using client-side tokenizers.

Why do counts vary by model?

Different models use different tokenizers and vocabularies, which change how text is split.