Reference: Anthropic · Google DocsLLM API Token Cost & Prompt Caching ROI Calculator (Claude 5.5 & Gemini 4)
Model monthly LLM API token bills across Claude Fable 5.1, Opus 5.5, Sonnet 5.5, Haiku 5.5, and Gemini 4 Argon with 5-minute/1-hour prompt caching and 50% async batch discounts.

