Is Gemini Enterprise cheaper than ChatGPT Enterprise?
On published prices they are close: Gemini Enterprise Business starts at $21 a seat and ChatGPT Business is $20 billed annually. Nobody can compare the two Enterprise tiers from public information, because OpenAI publishes no ChatGPT Enterprise price and Google publishes only a starting figure of $30 for Standard and Plus.
The dollar gap is small enough that it should not decide anything. The real price differences sit in the fine print. Google's $21 and $30 are both labeled Starting at, and the page never says which billing term they belong to. Google's billing article describes two terms for Business, a Monthly Term on a 30 day cycle and an Annual Term that is a "12-month commitment billed monthly at a discounted rate", and adds that switching from annual back to monthly "is not permitted until the 12-month commitment is fulfilled". OpenAI, by contrast, labels every Business figure with its term: $20 if billed annually, $25 if billed monthly.
So if your finance team needs a number it can hold a vendor to, OpenAI's Business price is the more precise of the two. If it needs a number that still exists above 200 seats, Google is the only one of the pair that publishes one.