Sonnet 5.5 cache readings drop by half
Cache reading goes from $0.20 to $0.10 per million tokens without changing other prices.
Actual
Facts, analysis and limits
Verified facts
- Reading now at 0.05 times the basic entry price.
- Cache writes remain at the same price.
What changes
A concrete reduction in the cost of agents repeating a lot of context.
Practical implication
Review the cache rate and recalculate the actual cost of recurring tasks.
Availability
Belgium/EEA: not specified in the source; access depends on the plan, rollout and administrator settings.
Limits and uncertainty
The reduction in total cost depends on the cache rate; "about 20%" is a supplier estimate for some workloads, not a guarantee.