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AI Token Counter
Manage your LLM context windows and estimate API pricing with pinpoint accuracy. Optimized for OpenAI gpt-4, gpt-3.5-turbo and Claude models.
GPT Tokens
0
OpenAI cl100k_base
Characters
0
Words
0
Paragraphs
0
Input Text
Why Token Counting Matters
AI models like GPT-4, Claude, and Llama don't read text character-by-character. Instead, they process sequences of characters called tokens.
- • A token is roughly 4 characters or 0.75 words.
- • Every model has a Context Window limit (e.g., 128k for GPT-4o).
- • Pricing is based on tokens, not characters.
Cost Estimation (GPT-4o)
Estimated Input Cost:$0.000000
Based on $5.00 per 1 million tokens (GPT-4o pricing). Actual costs may vary depending on the model and output length.