AI token cost calculators

Estimate token spend, cache savings, and monthly cost from real bundled pricing — with notional-vs-real labels.

• Tokens to dollarscalculator
• Claude Code monthly costcalculator
• Prompt cache savingscalculator
• 200K context surchargecalculator
• Codex notional costnotional
• Claude Opus 4.8 costcalculator
• Claude Sonnet 4.6 costcalculator
• GPT-5.3-Codex costnotional
• Gemini 3 Pro costnotional