Agents Without Caching Cost 260% More as Discount Battle Heats Up

Agent Arena's analysis of 26,225 sessions shows agents without caching cost 260% more, with caching discounts rising from 0 to 95% in two years. OpenAI recently added 12-hour prompt caching to its API, with non-expiring caches in Codex and Work.

2026-10-30 ~ 2026-10-31 · 2 related posts

• Your AI agent would cost 260% more without prompt caching, Arena data shows — arena · 2026-10-30
• Your AI agent would cost 260% more without prompt caching, article argues — arena · 2026-10-31