
How much does prompt caching save on Claude and OpenAI? About 90% of input, if your traffic comes back in time
A cache read now costs 5% of normal input on Claude Sonnet 5.5 and GPT-6.1 Sol. What that does to a real bill, the hit rate where caching stops paying, and what breaks a cache, from both vendors' own pages read Nov 3, 2026.
Aliteq Team · · 9 min








