LLM Token Calculator
Estimate token count and API cost from text length across different tokenizers (GPT-4, Claude, Llama).
Inputs
Results
Input tokens per request
1,250
Total API cost ($)
$0.02
Output tokens per request1,250
Total tokens per request2,500
Total tokens (all requests)2,500
Input cost ($)$0
Output cost ($)$0.01
128K context usage (%)1.95%
Tokenizer NameGPT-4 (cl100k_base)
How to Use This Calculator
- Enter the Text Length in characters — paste your typical prompt and count characters, or use a rough estimate.
- Select the Tokenizer matching your model (GPT-4 uses ~4 chars/token, Claude ~3.5 chars/token).
- Set the Input Price per 1M Tokens from the provider's pricing page and the Output-to-Input Ratio (e.g., 0.3 for summarization, 2 for generation).
- Enter the Number of Requests to estimate total batch cost.
- Review Input Tokens, Output Tokens, Total Cost, and Context Usage % to optimize your prompt length and budget.
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