Seat-based pricing provides a predictable expenditure ceiling, making it a preferred choice for finance teams managing stable headcount. For instance, costs can range from $0 per seat for tools like Ramp or Brex to $5 per seat for platforms like Box Business Starter or Olakai Assistive.
Usage-based pricing aligns costs directly with activity, using granular metrics like tokens. This model is often more efficient for intermittent workloads or high-volume automation where a fixed seat cost would be inefficient. Examples include IBM granite-4h-small at $0.06 per 1M input tokens and Ministral 3B 3.0 at $0.1 per 1M output tokens.
When does seat pricing provide the best value?
Seat pricing is most effective when users engage with the AI daily. At $3 per seat month for Amazon Q Business Lite, the cost is easily recouped if the tool saves even a few minutes of labour. This model eliminates the risk of budget overruns from high-intensity users, as the monthly cost remains capped regardless of how many queries are made.
Why consider usage-based models for open source and APIs?
Usage-based models, such as Mistral AI at $0.11 per 1M input tokens, offer a pay-as-you-go structure that prevents paying for 'shelfware' or inactive seats. This is particularly useful for procurement teams testing new AI capabilities. Because charges are based on processed data—like Claude Haiku 4.5 at $0.1 per 1M tokens for prompt caching—costs only scale as the business realizes the utility of the model.
To determine which model truly pays back, you must measure the labour value of time saved against the total cost of the software. NetLift calculates this by subtracting the full AI cost from the hours saved multiplied by your loaded staff cost (typically $75 per hour). By grading the evidence quality of these time savings, you can move from estimates to verified data. This allows for objective decisions to expand or stop a rollout based on work value, rather than monitoring individual keystrokes or screens.
Bottom line: Choose seat pricing for predictable costs with high-intensity daily users, but opt for usage-based models for variable workloads or testing to avoid paying for inactive seats and scale expenses only with actual consumption.