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AI Token Counter โ€” Count Tokens for GPT, Claude, Gemini Free

Count tokens and estimate API costs for GPT-4, Claude, Gemini, Llama and other AI models. Free online token counter for LLM prompt optimization.

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Cost Estimate by Model

ModelContextInput CostOutput Cost
GPT-4o128K$0.000000$0.000000
GPT-4o mini128K$0.000000$0.000000
GPT-4 Turbo128K$0.000000$0.000000
Claude 3.5 Sonnet200K$0.000000$0.000000
Claude 3 Haiku200K$0.000000$0.000000
Claude 3 Opus200K$0.000000$0.000000
Gemini 1.5 Pro1M$0.000000$0.000000
Gemini 1.5 Flash1M$0.000000$0.000000
Llama 3.1 70B128K$0.000000$0.000000
Mistral Large128K$0.000000$0.000000

* Token count is an approximation (~4 characters per token for English). Actual tokenization varies by model. Prices are estimates based on published API pricing.

About AI Token Counter

Tokens are the basic units that AI language models use to process text. This tool estimates the token count for your text across popular models like GPT-4, Claude, Gemini, and Llama. It also calculates the approximate API cost for each model. Useful for optimizing prompts, estimating API costs, and staying within context window limits.

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