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Understanding Prompt Costs
Every word you send to an AI model and every word it sends back costs tokens. This calculator helps you estimate the real daily cost before you scale.
Tokens ≈ Words × 1.33
Daily Cost = (Input Tokens × Input Rate + Output Tokens × Output Rate) × Prompts ÷ 1,000,000
Daily Cost = (Input Tokens × Input Rate + Output Tokens × Output Rate) × Prompts ÷ 1,000,000
Why do input and output tokens cost differently?
Processing your input and generating output require different amounts of compute. Output generation is more intensive, so it costs more per token than reading input.
What's the cheapest model for high-volume prompting?
Claude Haiku and GPT-4o mini are both excellent for high-volume, simpler tasks. Haiku costs ~$0.80/$4 per MTok; GPT-4o mini costs $0.15/$0.60 per MTok — making mini the cheapest for most workloads.