AI Prompt Token Counter & LLM Cost Calculator
Estimate BPE token counts and calculate exact API input/output costs for OpenAI (GPT-4o), Anthropic (Claude 3.5), and Gemini 1.5. 100% Client-Side.
How do I use AI Prompt Token Counter & LLM Cost Calculator?
Type or paste your AI prompt, system instructions, or context payload.
View real-time token count estimation based on BPE byte-pair encoding heuristics.
Compare estimated API input/output cost across GPT-4o, Claude 3.5 Sonnet, and Gemini 1.5 Pro.
What features does AI Prompt Token Counter & LLM Cost Calculator offer?
Real-time keystroke BPE token estimation
Cost matrix for OpenAI, Anthropic, and Google Gemini models
Context window percentage usage indicator
100% private local browser execution
Frequently Asked Questions about AI Prompt Token Counter & LLM Cost Calculator
How are tokens calculated?
Tokens are calculated using BPE (Byte-Pair Encoding) heuristics where 1 token averages ~4 characters or 0.75 words in English.
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