OpenAI and Anthropic push API pricing to enterprise agents

anthropic and openai updated enterprise plans in april 2026 to charge standard api rates for coding agents, replacing previous bulk discounts. the shift accompanies the launch of higher-priced models like gpt-5.5 and opus 4.7. simon willison notes that individual usage often exceeds $1,000/month, suggesting vendors have found product-market fit with high-volume agent tools.