PromptTokenizer
Visualize and analyze how LLMs tokenize text. Count tokens, compare models, optimize your prompts.
Overview
PromptTokenizer is a powerful tool that allows you to visualize and analyze how leading Large Language Models (LLMs) such as GPT-4, Claude, and Llama tokenize your text. Understanding tokenization is crucial for optimizing prompts, managing costs, and staying within model context limits. With PromptTokenizer, you can see exactly how your input is broken down into tokens, compare tokenization across different models, and refine your prompts for maximum efficiency.
- Real-time token visualization with color-coded token boundaries
- Token count and character count for any text input
- Side-by-side comparison of tokenization across multiple LLMs
- Advanced analytics including token frequency and distribution
Key Features
Visualize token boundaries with color-coded highlights
Count tokens and characters for any text input
Compare tokenization across GPT-4, Claude, and Llama
Optimize prompts by analyzing token efficiency
Export tokenization reports for documentation
API access for programmatic token analysis
Pros & Cons
Pros
- arrow_right + Intuitive visual representation of tokenization
- arrow_right + Supports multiple leading LLMs for comparison
- arrow_right + Helps reduce token usage and API costs
- arrow_right + Fast performance with real-time feedback
- arrow_right + Useful for both developers and content creators
Cons
- arrow_right - Free tier has a token limit per query
- arrow_right - Limited to text-based analysis (no image tokens)
- arrow_right - Requires understanding of tokenization concepts for full benefit
Pricing Details
Free Tier: Basic token counting and visualization for single models (up to 1000 tokens per query).
Pro Tier ($9/month): Unlimited token analysis, multi-model comparison, export reports, API access, priority support.
FAQ
What is tokenization?
expand_moreTokenization is the process of breaking text into smaller units (tokens) that LLMs process. PromptTokenizer shows you exactly how your text is split.
Which models are supported?
expand_moreCurrently GPT-4, Claude 3, Llama 3, and GPT-3.5. More models are added regularly.
Is my data secure?
expand_moreYes, all tokenization is performed in your browser; data is not stored on our servers.
Can I use PromptTokenizer for large texts?
expand_moreThe free tier supports up to 1000 tokens; Pro supports up to 100,000 tokens per query.
How accurate is the token count?
expand_moreToken counts match the official tokenizers provided by each model's creator.
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Smart Alternatives & Comparison
Compare PromptTokenizer side-by-side with other leading tools in the same category.
| Criteria |
PromptTokenizer
This Tool
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| Overview | Visualize and analyze how LLMs tokenize text. Count tokens, compare models, optimize your prompts. | Manage local and cloud AI agents from your editor. Plan, delegate, review, and ship code without context switching. | Spawn background coding agents in the cloud. Hand off tasks from Slack, Linear, or GitHub and get a PR back. | Ship API integrations instantly. Forward deploys AI agents into your customers' repos, auto-writing and testing integrations in minutes. |
| Pricing Model | Freemium | Freemium | Freemium | Freemium |
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| Developer API | cancel Not Available | cancel Not Available | cancel Not Available | cancel Not Available |
| Open Source | lock Proprietary | lock Proprietary | lock Proprietary | lock Proprietary |
| Action | Visit Web open_in_new |
