How does NumStack calculate AI token costs?

NumStack uses real published pricing from OpenAI, Anthropic, Google, and other AI providers. Enter your typical usage (input tokens, output tokens, requests per day) to see projected monthly costs across all models.

Why do different AI models have different token prices?

Different models have different computational costs. Smaller models like GPT-4o mini or Haiku are cheaper but less capable. Larger models like GPT-4o or Claude Sonnet are more powerful but cost more per token.

How can I reduce my AI API costs?

Use smaller models for simple tasks, cache repeated prompts, trim output length (output tokens cost 3-5x more than input), and batch requests instead of real-time when latency allows.

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🧭 Model Selection Advisor

Which AI model should you use?

Tell us about your use case and we'll recommend the top 3 models — with cost estimates and rationale.

1. What are you building?

2. What matters most?

3. Monthly API budget

Budget limit$500/mo

$0$1,000$5,000

4. Context window needed

5. Required features (optional)