AI token spending jumps 122% to 160% as prices fall 67%, a16z data shows

Cheaper AI inference is driving more total spending, not less, as agents consume tokens at a far higher rate than humans AI just got a lot cheaper, and companies responded by spending a lot more on it. Venture firm a16z reports that average AI token prices have fallen 67% since May 2026, while total token spending has climbed more than 120%, with estimates ranging from 122% to 160%. The data appeared in the firm’s Charts of the Week, published on October 31, 2026. What the numbers show First, a quick vocabulary check. In this context, a “token” is the billing unit for AI model inference. It is a small chunk of text a model reads or writes, and providers charge by the token. The headline divergence is stark. Per-token prices dropped 67% since May. Total spend over the same stretch rose somewhere between 122% and 160%. So the unit got cheaper, and the receipt got longer. Usage grew fast enough to swamp the price cut entirely. The biggest driver appears to be AI agents. According to the a16z data, agents consume nearly five times as many tokens as human users do. A person asks a chatbot a question and reads the answer. An agent runs a longer task, carrying more context and taking more...