I do not have hard data that can support my claim that "most" Anthropic enterprise customers are paying full price. Just anecdotal evidence from stories like these:

https://blog.pragmaticengineer.com/the-pulse-token-spend-bre... - "I talked with companies spending $5M+ per year on Claude which have received no discounts. If Anthropic offers discounts, it will likely be at a much higher tier."

https://www.theinformation.com/articles/anthropic-openai-fig... - "Anthropic’s discounts on its models can be around 15% off listed prices, according to managers from the three software firms that buy AI from both companies."

Plus my own personal conversations with a small number of people at medium to large sized companies who said that Anthropic's sales teams were hard to get discounts from.