AI Token Calculator
When you run inference with AI models, you're charged for the number of tokens in your input and output. Tokens are text pieces that models process - different providers count tokens differently. Use this calculator to estimate token counts and refine your prompts to optimize costs and stay within quotas.
How We Calculate Tokens
85-95% accuracy with provider-specific tokenization
OpenAI / Azure
tiktoken library
GPT-4 encoding (cl100k_base)
Anthropic
~3.8 chars/token
Claude-optimized approximation
AWS Bedrock
~3.6 chars/token
Mixed model families
Google Cloud
~4.2 chars/token
Gemini/PaLM optimized