Anthropic shortens cache TTL from 1 hour to 5 minutes on March 6, 2026

·2026.04.13 09:53

Key point

The shortened Claude Code cache TTL caused a sharp spike in cache regeneration costs and quota consumption.

Details

In early March 2026, the cache TTL for Claude Code changed from 1 hour to 5 minutes.

Even under the same usage patterns, differences in server-side configuration caused the cache to be invalidated more frequently, resulting in a 20-32% increase in cache regeneration costs.

The impact was more pronounced in long-running sessions.

The number of cache regenerations increased
Quota consumption rose sharply
Perceived costs and the speed of hitting limits worsened during long work sessions

anthropic claude-code prompt-caching cost quota ttl cache

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