About LLM Token Counter
A free, open toolkit for developers working with large language model APIs.
What We Do
LLMTokenCounter.online provides instant token counting and cost estimation tools for every major AI model API — including OpenAI GPT, Anthropic Claude, Google Gemini, Meta LLaMA, Mistral, DeepSeek, and 70+ others. All tools run entirely in your browser. No text is sent to any server.
Why We Built This
API costs can spiral quickly when you're building with LLMs. A prompt that looks short in a text editor may consume thousands of tokens once system context and few-shot examples are added. We built these tools so developers can measure before they deploy — not after they receive a surprise invoice.
Our Tools
- Token counters — model-accurate estimates for 70+ LLMs
- Cost calculators — real-time USD cost for input and output tokens
- Multi-model comparison — paste once, compare all models side-by-side
- RAG pipeline cost — embedding + vector DB + inference in one calculator
- Fine-tuning cost — training cost and break-even analysis
- Monthly budget planner — how many requests fit your budget
Contact
Questions or feedback? Reach us at info@llmtokencounter.online.