LLM Token Counter

LLM Token Counter – Accurate Token Estimation for All AI Models

LLM Token Counter is a free online platform designed to help developers, researchers, content creators, and AI engineers accurately estimate token usage across modern large language models. Whether you are working with OpenAI, Claude, LLaMA, Mistral, Gemini, or DeepSeek models, our tools give you instant insights into token counts, words, and characters.

Tokens are the fundamental unit used by AI language models to process text. Understanding token limits is critical for controlling API costs, avoiding context overflows, and optimizing prompt performance. With LLMTokenCounter.online, you can estimate tokens before sending requests to any model.

Why Token Counting Is Important for LLMs

Most AI providers calculate pricing and context limits based on tokens rather than words. A single sentence can consume a different number of tokens depending on the model. For example, GPT-4, Claude, Gemini, and LLaMA all tokenize text differently. This makes a reliable token counter essential for production-ready AI applications.

• Prevent prompt truncation and context overflow
• Estimate API usage cost before deployment
• Optimize system prompts and chat history
• Compare token behavior across models

Supported AI Models & Token Counters

Our homepage provides quick access to over 60+ dedicated token counters, each optimized for a specific model. You can directly open any tool and calculate tokens in real time.

Popular tools include: GPT-4 Token Counter, GPT-4o Token Counter, Claude Opus Token Counter, LLaMA 3 Token Counter, Mistral Large Token Counter, DeepSeek R1 Token Counter, and Gemini 1.5 Pro Token Counter.

Universal Token Estimation

Not sure which model you are using? The Universal Token Estimator provides a general approximation based on industry-standard token-to-character ratios. This is useful for early planning, drafts, and multi-model comparisons.

How Our Token Counter Works

Each tool uses a model-specific heuristic derived from public tokenizer behavior. While exact tokenization may vary slightly depending on the provider, our estimates are highly reliable for prompt planning and cost estimation.

Simply paste your text, and the tool instantly shows:

• Total token count
• Word count
• Character count
• Average characters per token

Who Should Use LLM Token Counter?

LLM Token Counter is ideal for:

• AI developers building chatbots and agents
• Prompt engineers optimizing system prompts
• Businesses managing AI API costs
• Students and researchers experimenting with LLMs
• Content creators using AI writing tools

All tools are browser-based, fast, and privacy-friendly. We do not store or log your input text.