Live Commerce / Metrics
Live Selling Metrics, Explained: GMV, GPM, Sell-Through, and the Rest
By the Ghost Agent team ·
Live selling has its own vocabulary, and most guides define the terms without telling you how to use them. This is a working glossary: what each metric means, why it matters, and how to actually read it during and after a show.
1. GMV (gross merchandise value)
GMV is the total value of goods sold in a show, the headline scoreboard number. Its blind spot is that it is a lagging total: it tells you how the show ended, not where it leaked or how to improve, so it is a starting point, not a diagnosis.
2. GPM (gross per minute)
GPM is GMV divided by time, your pace metric. Read in rolling windows, it catches mid-show decay while you can still act, which makes it the single most useful number to watch live. It anchors the whole Whatnot analytics approach.
3. Sell-through rate
Sell-through is the share of staged inventory that actually sold. A low rate usually points to pricing or pacing, not demand, and is best read per category rather than against a universal target.
4. Bid velocity (Whatnot)
Bid velocity is how fast bids arrive in a lot, especially its opening seconds. It predicts whether a lot converts and tells you when to extend a live one or cut a dead one, the core read behind auction pacing.
5. Chat velocity and chat density
Chat velocity is how fast comments arrive; density weights that against viewers. On TikTok Live, where there is no live sales feed, chat is the primary real-time signal you have, which makes reading it well the difference between steering and guessing.
6. Retention curve shape
This is how your viewer count behaves over the show, not just its peak. A room that holds steady beats one that spikes and bleeds, because held attention through the mid-show callouts is where the money is.
7. AOV (average order value)
AOV is revenue divided by orders. In a live context it tells you whether you are winning on volume or on value, and whether bundling or higher-tier lots could lift the same audience's spend.
8. Repeat-buyer rate
The share of buyers who have bought from you before. It is the compounding metric that separates renting an audience from owning one, and it only appears if you track buyers by name across shows.
9. Engagement density
Chat and bids per viewer, rather than raw viewer count. A smaller, denser room converts better than a large silent one, so density is the honest read on whether attention is turning into intent.
10. Putting them together
Mid-show, watch three: rolling GPM, bid or chat velocity, and retention shape. Save the rest for the postmortem. Ghost Agent captures all of them from your live shows so the three live numbers are in front of you in the moment and the full set is ready afterward, whether you sell on Whatnot or read TikTok's chat-based metrics.
See the metrics that matter, live
Ghost Agent captures GMV, GPM, and momentum from your shows and puts the three that matter mid-show in front of you, so the numbers work during the show, not just after.
Start your free trialFrequently asked questions
What does GMV mean in live selling?
GMV, or gross merchandise value, is the total value of goods sold in a show. It is the headline number, but because it is a lagging total it tells you how a show ended rather than where it leaked or how to improve.
What is GPM in live streaming sales?
GPM is gross per minute, your GMV divided by time. Read in rolling windows it catches mid-show decay while you can still react, which makes it the most useful single metric to watch during a live show.
What is a good sell-through rate for a live show?
It depends heavily on category and item value, so track your own rising trend rather than a universal target. A sell-through that climbs as you tighten pricing and pacing matters more than any specific percentage.
Which live selling metrics matter most for a beginner?
Start with GPM, sell-through, and repeat-buyer rate. GPM steers the show live, sell-through and repeat-buyer rate steer your pricing and audience strategy over time, and together they cover most decisions a new seller faces.