Why Prompt Token Counting Matters
Token optimization is essential for AI engineers, prompt architects, and API builders. Keeping prompts lean improves model execution speed, reduces API latency, and slashes monthly LLM API expenditures.
Frequently Asked Questions
How does the Prompt Token Counter work?
The counter calculates token counts in real-time using sub-word byte pair encoding heuristics (approx 1 token per 4 characters or 0.75 words) 100% locally in your browser.
Is my confidential prompt data saved or logged on any server?
No. The counter processes text 100% locally in your web browser memory. Your prompt text is never uploaded to any remote server.
What is the token limit for ChatGPT (GPT-4o)?
GPT-4o supports a 128,000 token context window, with a maximum single response output limit of 4,096 to 16,384 tokens depending on API configuration.
What is the token limit for Anthropic Claude 3.5 Sonnet?
Claude 3.5 Sonnet supports a 200,000 token context window, allowing you to pass entire code repositories or documentation manuals in a single prompt.
Why do code snippets consume more tokens than plain English text?
Programming languages contain punctuation, indentation, camelCase identifiers, and special symbols that break into multiple sub-word tokens.
Can I copy the calculated token metrics?
Yes. Click the Copy Prompt or Copy Token Summary buttons to instantly copy data to your clipboard.
How many tokens are in a 1,000-word article?
A 1,000-word English article is approximately equal to 1,300 to 1,400 tokens.
Is this prompt token counter free?
Yes. ToolzTotal provides 100% free AI and developer tools with no signups, no subscriptions, and zero limits.
Sources & References
Related Calculators & Tools
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Calculate Anthropic Claude 3.5 Sonnet, Claude 3 Opus, and Haiku API costs with prompt caching discounts.
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