LLM Token Estimator
Estimate token count and cost for any text prompt across OpenAI, Anthropic, Google, and other LLM providers.
Token Estimator
~0 tokens estimated (0 characters)
About This Calculator
Paste any text to instantly estimate its token count and API cost across all major LLM providers. Token counts are estimated at approximately 4 characters per token — the standard approximation for English text used by OpenAI's tokenizer.
How to Use This Calculator
- 1Paste your prompt or text into the input box
- 2Select your model
- 3Set the expected output-to-input ratio
- 4See token count and cost instantly
Formula Used
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FAQ
Frequently Asked Questions
Common questions about the llm token estimator answered.
How accurate is the 1 token = 4 characters estimate?+
Does whitespace and punctuation count as tokens?+
Token Pricing Across Models
Token pricing varies enormously across models. At 1,000 input tokens, GPT-4o costs $0.0025, Gemini 2.0 Flash costs $0.0001, and Claude Sonnet 4.5 costs $0.003. For a typical chatbot handling 10,000 conversations per day, model choice alone can mean the difference between $30 and $3,000 per month.
- English text: ~1 token per 4 characters
- Code: ~1 token per 3.5 characters
- JSON/structured data: ~1 token per 3 characters
- Chinese/Japanese: ~1-2 characters per token
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