You need to do a market analysis yourself as developer tools are not my area of market expertise. As a general strategy, given this is a new tool you might want to start with just two dimensions/factors: introductory vs. long-term (to drive adoption), and consumer vs. enterprise.

For the purposes of answering your question in the short-term: you might end up with a perpetual license single-developer price knowing that this initial set of customers will be innovators and an "investment" that will be on your books for quite some time. You could even time or quota-limit if you're looking for a specific growth trajectory and initial burst of revenue.

Given that this is perpetual licensing (and again - you need to decide whether this will be for all versions forever, or limited to +K major versions), you need to balance 12-18month runway (cost-feature) planning against any margin you're hoping to generate (maybe none if you're aiming for ramen profitability).

Feel free to reach out if you want to discuss further.