Prompt caching explained: Anthropic, OpenAI, and Gemini in 2026
Prompt caching cuts LLM API costs up to 90%, but Anthropic, OpenAI, and Gemini implement it differently. Here's how each vendor's billing actually works.
Tag · prompt-caching
Prompt caching cuts LLM API costs up to 90%, but Anthropic, OpenAI, and Gemini implement it differently. Here's how each vendor's billing actually works.
Prompt caching and the batch API cut a real Claude API bill from $797 to $127/month in 2026. Full worked example with exact token counts and 2026 pricing.
Prompt caching cuts LLM costs 90% on Anthropic and 50% on OpenAI, but only when your workload fits. Here's the exact break-even math per provider.