PromptTokenizer

What it does

PromptTokenizer lets you visualize and analyze how LLMs like GPT-4, Claude, and Llama tokenize text. Count tokens, compare models, and optimize your prompts.

Free LLM token counter and visualizer. See how GPT-4, Claude 3.5, Llama 3, and Gemini tokenize your prompts. Count tokens, compare models, estimate API costs.

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  GPT Calculator2023 · ▲83

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  LLM Token CounterMay 2026 · singhajit.com · ▲3

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  GPT Calculator – Calculate the token count and cost of your GPT Prompt2023 · gptcalculator.xyz · ▲63

  Easily calculate the token count and cost of your GPT Prompt.

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  Free Token counter2025 · freetokencounter.com · ▲8

  toolify100.com is a collection of tools

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  TokenCalculatorAiAug 2026 · tokencalculatorai.com · ▲1

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• AC
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  Hey HN! I'm working on OpenPipe, an open source prompt workshop. I wanted to share a feature we recently released: prompt translations. Prompt translations allow you to quickly convert a prompt between GPT 3.5, Llama 2, and Claude 1/2 compatible formats. The common case would be if you’re using GPT 3.5 in production and are interested in evaluating a Claude or Llama 2 model for your use case. Here's a screen recording to show how it works in our UI: https://twitter.com/OpenPipeLab/status/1687875354311180288 We’ve found a lot of our users are interested in…

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