On-demand pricing is the baseline pricing tier across GPU rental marketplaces: pay-as-you-go hourly rates with no upfront commitment, no contract minimums, and the ability to start or stop instances at will.
This is the most expensive pricing tier per GPU-hour but offers the most flexibility. It's the standard tier for ad-hoc experimentation, short-duration workloads, and any usage pattern that can't justify the multi-month commitments that discounted tiers (reserved, spot) require.
AIMC's index focuses on on-demand pricing across all 28 authorized marketplace partners. Spot, reserved, and pre-emptible tiers are tracked separately where partners expose them but are not included in canonical pricing comparisons to keep cross-marketplace rates apples-to-apples.