Why OpenAI and Anthropic cut LLM prices by up to 80% in a few months

OpenAI and Anthropic cut their LLM prices by up to 80% within a few months. Why?

OpenAI and Anthropic cut prices on some models by up to 80% within a few months, and the piece lists competitive pressure and better inference efficiency as likely causes. The author notes that cache reads make up 96% to 99% of total token use for coding agents, so cheaper cache reads move real usage costs a lot; cumulative cost for the model family behind GPT-6.1 Sol fell about 75%.

Why it matters: It puts cache-read pricing into the comparison, so coding agents' real spend may fall far more than list input and output prices suggest.