Agentic Plan Caching (APC), described in the paper published by Stanford researchers on January 26, 2026, lets AI agents reuse structured plan templates from prior executions instead of re-invoking expensive LLMs for every new task. It achieved 76% cost reduction on benchmarks. Using different sources we create projections for growth using a simple growth model: Plans/year = ActiveAgents x PlansPerDay x 365, and Storage = Plans x BytesPerPlan MarketsandMarkets forecasts the AI agent market growing from $7.8B to $52.6B by 2030 at 46% CAGR. IDC projects 1.3 billion deployed AI agents by 2028. Gartner says 33% of enterprise software will be agentic by 2028, up from under 1% in 2024, with 15% of daily work decisions made autonomously. These three forecasts together imply that agent-driven plan generation will scale explosively — at just 5-20 plans per agent per day, 1.3 billion agents means 2.4 to 9.5 trillion plans per year across the ecosystem by 2028. We evaluate a possible storage offloading tipping point using all this data. Raw plan text is cheap at 2-10 KB each, but production systems also store retrieval embeddings, keyword indexes, tool call traces, and trajectory logs — inflating effective bytes per plan by 10-100x. That is the silent killer. Under conservative assumptions (1M agents, 30% YoY growth, lean plans), everything fits in RAM for years. Under aggressive assumptions (100M agents, 80% YoY, rich metadata), SSD offload becomes structurally inevitable in year one — you simply cannot fit petabytes of cached plans in RAM. The paradox is that APC's own success makes hoarding worse: every cached plan that saves a 50-cent LLM call is a plan you never want to delete. The better caching works, the faster storage pressure grows, and NVMe/SSD tiers stop being optional and start being load-bearing infrastructure. RAM is not a trash can with a power button. Sources: 1) October 2025 AI Agents: Technologies, Applications and Global Markets BCC Research Austin Samuel https://www.bccresearch.com/market-research/artificial-intelligence-technology/ai-agent-market.html 2) March 26 2025 (Updated November 6 2025) 26 AI Agent Statistics (Adoption Trends and Business Impact) Datagrid Datagrid Team 3) January 26 2026 Agentic Plan Caching: Test-Time Memory for Fast and Cost-Efficient LLM Agents Stanford University Qizheng Zhang, Michael Wornow, Gerry Wan, Kunle Olukotun https://arxiv.org/abs/2506.14852 4) 2026 AI Agents Market Size And Share | Industry Report, 2033 Grand View Research 5) April 2025 AI Agents Market Size, Share & Trends | Growth Analysis, Forecast MarketsandMarkets 6) August 26 2025 (Updated September 5 2025) Gartner Predicts 40% of Enterprise Apps Will Feature Task-Specific AI Agents by 2026, Up from Less Than 5% in 2025 Gartner 7) June 25 2025 Gartner Predicts Over 40% of Agentic AI Projects Will Be Canceled by End of 2027 Gartner 8) May 30 2025 Getting to one billion agents Perspectives on Power Platform Jukka Niiranen 9) May 20 2025 Microsoft expects 1.3 billion AI agents to be in operation by 2028 – here’s how it plans to get them working together IT Pro Bobby Hellard 10) 2026 Top Strategic Technology Trends for 2026 Gartner Gene Alvarez, Tori Paulman 11) October 28 2025 What 1.3 billion AI Agents by 2028 Means for Business Leaders Lantern