Price (USD)
G Pen Pro edgeG Pen Pro
$90
PAX FLOW
$350
G Pen Pro is typically around $260 lower.
Vaporizer Comparison
G Pen Pro vs PAX FLOW
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Pro
Grenco Science $90
VS
PAX FLOW
PAX Labs from $279.95
Editorial Summary
G Pen Pro and PAX FLOW are both portable / electronic vaporizers, but they target different priorities. G Pen Pro is usually the lower-cost pick at $90, around $260 below PAX FLOW. Heat-up speed is broadly similar between the two.
Specs Compared
20
Different Specs
17
Shared Specs
3
Overall Overlap
15%
Shared Traits
Portable Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heat-Up Time
Close callG Pen Pro
~30 seconds
PAX FLOW
30-45 seconds
Both devices are in a similar heat-up range.
Heating Style
Close callG Pen Pro
Convection
PAX FLOW
Hybrid (conduction + convection)
Heating style differs, which can impact flavor and extraction behavior.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
G Pen Pro
$90
PAX FLOW
$350
Heating Type
G Pen Pro
Convection
PAX FLOW
Hybrid (conduction + convection)
Heat Up Time
G Pen Pro
~30 seconds
PAX FLOW
30-45 seconds
Temperature Range
G Pen Pro
190°C - 220°C (375°F - 428°F)
PAX FLOW
180°C - 225°C (356°F - 437°F)
Chamber Capacity
G Pen Pro
~0.25 grams
PAX FLOW
0.25g - 0.35g
Battery Capacity
G Pen Pro
2200mAh
PAX FLOW
2000mAh (internal)
Charging
G Pen Pro
Micro-USB
PAX FLOW
USB-C
Charge Time
G Pen Pro
<3 hours
PAX FLOW
~20 minutes to 50%, ~40 minutes to full (USB-C)
Power Adjustment
G Pen Pro
Modular - 3 Stages
PAX FLOW
Four petal modes + Bong Mode
Chamber Material
G Pen Pro
Ceramic
PAX FLOW
Stainless Steel
Choose G Pen Pro if...
- You want the lower listed entry price ($90 vs $350).
- You prefer a convection heating profile.
- Your usage leans toward budget and convection sessions.
Choose PAX FLOW if...
- You prefer a hybrid (conduction + convection) heating profile.
- Your usage leans toward hybrid and discrete sessions.
- You prefer PAX FLOW's overall feature mix and form factor.
Lowest price
$279.95
at VPM
Prices are read automatically from retailer pages and were last checked Aug 27, 2026; confirm the price at checkout. Some links are affiliate links, which support Thermal Extractions at no extra cost to you.
Spec Comparison Table
Direct comparison of every spec from each device profile.
17 differ 3 shared
| Specification | G Pen Pro | PAX FLOW |
|---|---|---|
| Price (USD) | $90 | $350 |
| Device Type | Portable | Portable |
| Heating Type | Convection | Hybrid (conduction + convection) |
| Heat Up Time | ~30 seconds | 30-45 seconds |
| Temperature Range | 190°C - 220°C (375°F - 428°F) | 180°C - 225°C (356°F - 437°F) |
| Chamber Capacity | ~0.25 grams | 0.25g - 0.35g |
| Battery Type | Internal | Internal |
| Battery Capacity | 2200mAh | 2000mAh (internal) |
| Battery Life | — | ~30 minutes (about 3 sessions) |
| Charging | Micro-USB | USB-C |
| Charge Time | <3 hours | ~20 minutes to 50%, ~40 minutes to full (USB-C) |
| Dimensions | — | 107mm x 34.5mm x 29mm |
| Weight | — | 135 grams |
| Power Adjustment | Modular - 3 Stages | Four petal modes + Bong Mode |
| Chamber Material | Ceramic | Stainless Steel |
| Brand | Grenco Science | PAX Labs |
| Adjustable Airflow | — | No |
| Release Date | 2017 | 2025 |
| Session Style | Session | Session |
| Warranty | 1 year | 2 years (4 with registration) |
Comparison FAQs
What is the biggest difference between the G Pen Pro and the PAX FLOW?
The biggest practical difference is price tier: the G Pen Pro sits at $90 while the PAX FLOW is $350, a gap of about $260 that puts them in different buying brackets.
Which is cheaper, the G Pen Pro or the PAX FLOW?
G Pen Pro is the cheaper option at $90 compared with $350 for the PAX FLOW, about $260 less. Live retailer pricing can shift, so confirm before buying.
Which heats up faster, the G Pen Pro or the PAX FLOW?
G Pen Pro reaches session-ready temperature in ~30 seconds, while the PAX FLOW takes 30-45 seconds. That's roughly 8 seconds quicker on the G Pen Pro, which is useful if you want shorter, on-demand sessions.
What's the difference in heating between the G Pen Pro and the PAX FLOW?
G Pen Pro uses convection heating, while the PAX FLOW uses hybrid (conduction + convection). Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Does the G Pen Pro or the PAX FLOW hold more flower?
PAX FLOW has the larger chamber at 0.25g - 0.35g, versus ~0.25 grams on the G Pen Pro. A bigger bowl means fewer reloads on long sessions; a smaller one suits microdosing and quicker bowls.
Can I set custom temperatures on the G Pen Pro or the PAX FLOW?
G Pen Pro controls heat with modular - 3 stages, while the PAX FLOW uses four petal modes + bong mode. Both let you change temperature, just with different levels of precision.
Which charges faster, the G Pen Pro or the PAX FLOW?
PAX FLOW fully charges in ~20 minutes to 50%, ~40 minutes to full (USB-C), ahead of <3 hours on the G Pen Pro.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.