Cached prices: $.31 for Gemini Pro / Mtok, $1.50 for claude opus 4.1 / Mtok

There's additional storage costs with google caching, around $3.75 for 5 minutes/Mtok, and Claude Opus is $3.75 for 5minute Cache Writes / Mtok.

For cached reads Gemini Pro is 5X cheaper than Opus and like $0.01 more than Sonnet.