Self-reported · Anonymous
The Post-Harvest Pulse
Six questions, sixty seconds, anonymous. Answer and see how your line stacks up against every operator who has taken it.
Every flower inspected.
Every batch scored.
By a machine that never gets tired.
Marvel by Twister grades and sorts cannabis flower at up to 150 lbs per hour, recovering yield, holding quality, and cutting QC labor.
Pays for itself within six months, guaranteed
- or your deposit comes back and your fees stop. The Performance Guarantee: how we measure →
Yield recovery
Typical yield recovery documented across production evaluations of operations running below 70% finished-flower yield.
AI · MULTI-CAMERA · LINE-SPEED
The machineMarvel by TwisterAI grading & sorting for finished flower
The makerBuilt by KeirtonPost-harvest equipment since 2007
Track record80M+ lbs processedAcross 4 continents
Every unit CSA-certified at build · Running in GMP-certified facilities today
Yield recovery
Labor reduction
Cut the repetitive QC workload.
Labor cost cut by 62% at Grip Cannabis - $700,000 per harvest season, published case study. Marvel takes the repetitive inspection load; your people keep the judgment calls.
Cut the QC workload →Quality assurance
Your standard, held on every flower.
drop in quality complaints at a 2,700 lb/month multi-brand producer. Brands are built on consistency; Marvel is how you hold it.
How every flower gets checked →Never measured what automation cost you? Most haven't.
The bill hides in machine settings nobody's questioned since install day, and a yield number that looks "normal." Three questions, sixty seconds, and you'll know whether you're one of them.
Buying or auditing? Every Marvel batch ships with a flower-by-flower grade report.
The quality record →"Marvel has shifted the way we operate. We now have a level of confidence we did not have previously."
The yield math
Automation cut your labor cost. Running it blind quietly cut your yield.
<70%
Where most automated lines finish
The only way to avoid hand-finishing labor is to run the line tight enough that nothing needs a human touch. A poor process turns good flower into trim. Most operations running that process finish below 70% yield - and every point below 70% is finished flower you grew, dried, and then threw away.
+7%
Moving from 70% → 75% yield
Yield points compound. Recover 5–8 points and your sellable output rises 7–15%, depending on where you start - from the same plants, the same rooms, the same harvest. That recovered flower carries no added growing cost. It's the highest-margin product you will ever make.
Intelligent Trimming
How Marvel recovers it - in three moves.
Marvel closes this loop around any trim line - Twister or not. We call the process Intelligent Trimming: the trim line adjusted from real grading data instead of set-and-hope.
- 01
Run the trim line lighter
Faster, gentler settings. The old process trimmed tight so nobody had to finish flower by hand - a settings choice made blind, and yield paid for it.
- 02
Marvel inspects everything
High-speed cameras image every flower from multiple angles. Deep-learning grading checks stems, leaf, crow's feet, structure, color, size, and mold.
- 03
Rework only what's flagged
Flower that meets your standard passes. Only the flagged flower gets a second pass, instead of over-trimming everything to avoid rework. Quality holds. Yield comes back.
The AI is new. The company isn't.
Keirton has been building post-harvest equipment since 2007. Our machines have processed more than 80 million pounds of cannabis across four continents, backed by a real service organization, warranties that run up to 10 years, and 18+ years of cannabis-specific engineering. Marvel is the newest machine from the company whose equipment probably already runs somewhere in your building - not a startup's prototype.
Zero-risk ladder
Four steps. Your money is protected at every one.
- 01
Prove it first
A paid demo on your flower, run by our team - we manage the process while you verify every number. Demo fee credits toward your package if you proceed. You pay to witness proof, not to gamble.
- 02
No lump sum
Marvel runs as a managed service: a small implementation fee plus manageable service fees - not a six-figure equipment check before you've seen a result.
- 03
Deposit that comes back
Your performance deposit works one way: we earn it or return it. If the result isn't there, the money comes back.
- 04
The Performance Guarantee - on your numbers
Your guarantee is 5-10 points, set from five harvests of your own records. The lower you start, the more we guarantee. Miss it - or miss payback within six months against a model frozen before install - and your deposit comes back and your fees stop. We're not the scorekeeper. You are. How we measure →
Buying bulk flower? Grade the whole lot before you commit.
Photos and small random samples don't justify the price of a whole batch. Marvel scores every flower in the lot and gives you an objective grade for all of it - no more sampling the top of the bag and hoping the bottom matches.
Four seats
The Charter Program: half price, in exchange for proof
The Charter Program is a four-seat offer: the first four operations to accept its terms run the managed model at 50% off the standard service rate. You get the half-price rate, the yield and payback guarantees, and our team running your validation, install, and dial-in. We get your results in the fleet data (anonymized on request) and a public case study - your name and your numbers on the page, every word approved by you.
Four operations, because we run every one ourselves. When they're filled, the rate is gone.
Industry Data
Two reads on post-harvest.
One you give. One we measured.
Fleet report · Measured machine data · Ships soon
State of Post-Harvest 2026
What three billion AI-graded flowers reveal about real yields, real defects, and what the industry throws away. Built from Marvel fleet data. Pre-registrants get it before it goes public.
Find out what Marvel changes for your operation - yield, labor, or quality.
A 30-minute discovery call. We'll look at your throughput, your yield, and your labor costs - the clearest signals of what's on the table - and tell you straight if it's not a fit.
Guaranteed against your own records - or your deposit comes back and your fees stop.